X-Git-Url: http://nitlanguage.org

diff --git a/c_src/parser.sep.3.c b/c_src/parser.sep.3.c
index 8d7cab4..93b72d2 100644
--- a/c_src/parser.sep.3.c
+++ b/c_src/parser.sep.3.c
@@ -1,524 +1,4 @@
 #include "parser.sep.0.h"
-/* method parser#Parser#build_reduce_table for (self: Object) */
-void VIRTUAL_parser__Parser__build_reduce_table(val* self) {
-parser__Parser__build_reduce_table(self);
-RET_LABEL:;
-}
-/* method parser#ComputeProdLocationVisitor#visit for (self: ComputeProdLocationVisitor, ANode) */
-void parser__ComputeProdLocationVisitor__visit(val* self, val* p0) {
-val* var_n /* var n: ANode */;
-short int var /* : Bool */;
-int cltype;
-int idtype;
-val* var1 /* : Location */;
-val* var_loc /* var loc: Location */;
-val* var2 /* : Array[Prod] */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-val* var5 /* : Array[Prod] */;
-val* var6 /* : Iterator[nullable Object] */;
-short int var7 /* : Bool */;
-val* var8 /* : nullable Object */;
-val* var_no /* var no: Prod */;
-val* var9 /* : Array[Prod] */;
-val* var10 /* : Array[Prod] */;
-short int var11 /* : Bool */;
-short int var12 /* : Bool */;
-val* var13 /* : Location */;
-val* var14 /* : nullable SourceFile */;
-long var15 /* : Int */;
-long var16 /* : Int */;
-long var17 /* : Int */;
-long var18 /* : Int */;
-val* var_loco /* var loco: Location */;
-val* var19 /* : Array[Prod] */;
-val* var20 /* : Iterator[nullable Object] */;
-short int var21 /* : Bool */;
-val* var22 /* : nullable Object */;
-val* var_no23 /* var no: Prod */;
-val* var25 /* : Array[Prod] */;
-short int var26 /* : Bool */;
-int cltype27;
-int idtype28;
-val* var29 /* : Array[Prod] */;
-val* var30 /* : nullable Location */;
-val* var_startl /* var startl: nullable Location */;
-val* var31 /* : null */;
-short int var32 /* : Bool */;
-val* var33 /* : nullable Location */;
-val* var_endl /* var endl: nullable Location */;
-val* var34 /* : null */;
-short int var35 /* : Bool */;
-val* var36 /* : Location */;
-val* var37 /* : nullable SourceFile */;
-long var38 /* : Int */;
-long var39 /* : Int */;
-long var40 /* : Int */;
-long var41 /* : Int */;
-val* var42 /* : Array[Prod] */;
-short int var43 /* : Bool */;
-short int var44 /* : Bool */;
-val* var45 /* : Location */;
-val* var46 /* : nullable SourceFile */;
-long var47 /* : Int */;
-long var48 /* : Int */;
-long var49 /* : Int */;
-long var50 /* : Int */;
-val* var_loc51 /* var loc: Location */;
-val* var52 /* : Array[Prod] */;
-val* var53 /* : Iterator[nullable Object] */;
-short int var54 /* : Bool */;
-val* var55 /* : nullable Object */;
-val* var_no56 /* var no: Prod */;
-val* var58 /* : Array[Prod] */;
-val* var59 /* : Array[Prod] */;
-var_n = p0;
-/* <var_n:ANode> isa Token */
-cltype = type_parser_nodes__Token.color;
-idtype = type_parser_nodes__Token.id;
-if(cltype >= var_n->type->table_size) {
-var = 0;
-} else {
-var = var_n->type->type_table[cltype] == idtype;
-}
-if (var){
-var1 = ((val* (*)(val*))(var_n->class->vft[COLOR_parser_nodes__ANode__location]))(var_n) /* location on <var_n:ANode(Token)>*/;
-var_loc = var1;
-self->attrs[COLOR_parser__ComputeProdLocationVisitor___last_location].val = var_loc; /* _last_location on <self:ComputeProdLocationVisitor> */
-var2 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_first_prods].val; /* _need_first_prods on <self:ComputeProdLocationVisitor> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_first_prods", "src/parser/parser.nit", 1999);
-exit(1);
-}
-var3 = ((short int (*)(val*))(var2->class->vft[COLOR_abstract_collection__Collection__is_empty]))(var2) /* is_empty on <var2:Array[Prod]>*/;
-var4 = !var3;
-if (var4){
-var5 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_first_prods].val; /* _need_first_prods on <self:ComputeProdLocationVisitor> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_first_prods", "src/parser/parser.nit", 2000);
-exit(1);
-}
-var6 = ((val* (*)(val*))(var5->class->vft[COLOR_abstract_collection__Collection__iterator]))(var5) /* iterator on <var5:Array[Prod]>*/;
-for(;;) {
-var7 = ((short int (*)(val*))(var6->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var6) /* is_ok on <var6:Iterator[nullable Object]>*/;
-if(!var7) break;
-var8 = ((val* (*)(val*))(var6->class->vft[COLOR_abstract_collection__Iterator__item]))(var6) /* item on <var6:Iterator[nullable Object]>*/;
-var_no = var8;
-var_no->attrs[COLOR_parser__Prod___first_location].val = var_loc; /* _first_location on <var_no:Prod> */
-CONTINUE_label: (void)0;
-((void (*)(val*))(var6->class->vft[COLOR_abstract_collection__Iterator__next]))(var6) /* next on <var6:Iterator[nullable Object]>*/;
-}
-BREAK_label: (void)0;
-var9 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_first_prods].val; /* _need_first_prods on <self:ComputeProdLocationVisitor> */
-if (var9 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_first_prods", "src/parser/parser.nit", 2003);
-exit(1);
-}
-((void (*)(val*))(var9->class->vft[COLOR_abstract_collection__RemovableCollection__clear]))(var9) /* clear on <var9:Array[Prod]>*/;
-} else {
-}
-var10 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var10 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2007);
-exit(1);
-}
-var11 = ((short int (*)(val*))(var10->class->vft[COLOR_abstract_collection__Collection__is_empty]))(var10) /* is_empty on <var10:Array[Prod]>*/;
-var12 = !var11;
-if (var12){
-var13 = NEW_location__Location(&type_location__Location);
-var14 = ((val* (*)(val*))(var_loc->class->vft[COLOR_location__Location__file]))(var_loc) /* file on <var_loc:Location>*/;
-var15 = ((long (*)(val*))(var_loc->class->vft[COLOR_location__Location__line_start]))(var_loc) /* line_start on <var_loc:Location>*/;
-var16 = ((long (*)(val*))(var_loc->class->vft[COLOR_location__Location__line_start]))(var_loc) /* line_start on <var_loc:Location>*/;
-var17 = ((long (*)(val*))(var_loc->class->vft[COLOR_location__Location__column_start]))(var_loc) /* column_start on <var_loc:Location>*/;
-var18 = ((long (*)(val*))(var_loc->class->vft[COLOR_location__Location__column_start]))(var_loc) /* column_start on <var_loc:Location>*/;
-((void (*)(val*, val*, long, long, long, long))(var13->class->vft[COLOR_location__Location__init]))(var13, var14, var15, var16, var17, var18) /* init on <var13:Location>*/;
-CHECK_NEW_location__Location(var13);
-var_loco = var13;
-var19 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2009);
-exit(1);
-}
-var20 = ((val* (*)(val*))(var19->class->vft[COLOR_abstract_collection__Collection__iterator]))(var19) /* iterator on <var19:Array[Prod]>*/;
-for(;;) {
-var21 = ((short int (*)(val*))(var20->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var20) /* is_ok on <var20:Iterator[nullable Object]>*/;
-if(!var21) break;
-var22 = ((val* (*)(val*))(var20->class->vft[COLOR_abstract_collection__Iterator__item]))(var20) /* item on <var20:Iterator[nullable Object]>*/;
-var_no23 = var22;
-((void (*)(val*, val*))(var_no23->class->vft[COLOR_parser_nodes__Prod__location_61d]))(var_no23, var_loco) /* location= on <var_no23:Prod>*/;
-CONTINUE_label24: (void)0;
-((void (*)(val*))(var20->class->vft[COLOR_abstract_collection__Iterator__next]))(var20) /* next on <var20:Iterator[nullable Object]>*/;
-}
-BREAK_label24: (void)0;
-var25 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var25 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2012);
-exit(1);
-}
-((void (*)(val*))(var25->class->vft[COLOR_abstract_collection__RemovableCollection__clear]))(var25) /* clear on <var25:Array[Prod]>*/;
-} else {
-}
-} else {
-/* <var_n:ANode> isa Prod */
-cltype27 = type_parser_nodes__Prod.color;
-idtype28 = type_parser_nodes__Prod.id;
-if(cltype27 >= var_n->type->table_size) {
-var26 = 0;
-} else {
-var26 = var_n->type->type_table[cltype27] == idtype28;
-}
-if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2015);
-exit(1);
-}
-var29 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_first_prods].val; /* _need_first_prods on <self:ComputeProdLocationVisitor> */
-if (var29 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_first_prods", "src/parser/parser.nit", 2016);
-exit(1);
-}
-((void (*)(val*, val*))(var29->class->vft[COLOR_abstract_collection__SimpleCollection__add]))(var29, var_n) /* add on <var29:Array[Prod]>*/;
-((void (*)(val*, val*))(var_n->class->vft[COLOR_parser_nodes__ANode__visit_all]))(var_n, self) /* visit_all on <var_n:ANode(Prod)>*/;
-var30 = var_n->attrs[COLOR_parser__Prod___first_location].val; /* _first_location on <var_n:ANode(Prod)> */
-var_startl = var30;
-var31 = NULL;
-if (var_startl == NULL) {
-var32 = 0; /* is null */
-} else {
-var32 = 1; /* arg is null and recv is not */
-}
-if (var32){
-var33 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___last_location].val; /* _last_location on <self:ComputeProdLocationVisitor> */
-var_endl = var33;
-var34 = NULL;
-if (var_endl == NULL) {
-var35 = 0; /* is null */
-} else {
-var35 = 1; /* arg is null and recv is not */
-}
-if (!var35) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2024);
-exit(1);
-}
-var36 = NEW_location__Location(&type_location__Location);
-var37 = ((val* (*)(val*))(var_startl->class->vft[COLOR_location__Location__file]))(var_startl) /* file on <var_startl:nullable Location(Location)>*/;
-var38 = ((long (*)(val*))(var_startl->class->vft[COLOR_location__Location__line_start]))(var_startl) /* line_start on <var_startl:nullable Location(Location)>*/;
-var39 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__line_end]))(var_endl) /* line_end on <var_endl:nullable Location(Location)>*/;
-var40 = ((long (*)(val*))(var_startl->class->vft[COLOR_location__Location__column_start]))(var_startl) /* column_start on <var_startl:nullable Location(Location)>*/;
-var41 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__column_end]))(var_endl) /* column_end on <var_endl:nullable Location(Location)>*/;
-((void (*)(val*, val*, long, long, long, long))(var36->class->vft[COLOR_location__Location__init]))(var36, var37, var38, var39, var40, var41) /* init on <var36:Location>*/;
-CHECK_NEW_location__Location(var36);
-((void (*)(val*, val*))(var_n->class->vft[COLOR_parser_nodes__Prod__location_61d]))(var_n, var36) /* location= on <var_n:ANode(Prod)>*/;
-var42 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var42 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2028);
-exit(1);
-}
-var43 = ((short int (*)(val*))(var42->class->vft[COLOR_abstract_collection__Collection__is_empty]))(var42) /* is_empty on <var42:Array[Prod]>*/;
-var44 = !var43;
-if (var44){
-var45 = NEW_location__Location(&type_location__Location);
-var46 = ((val* (*)(val*))(var_endl->class->vft[COLOR_location__Location__file]))(var_endl) /* file on <var_endl:nullable Location(Location)>*/;
-var47 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__line_end]))(var_endl) /* line_end on <var_endl:nullable Location(Location)>*/;
-var48 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__line_end]))(var_endl) /* line_end on <var_endl:nullable Location(Location)>*/;
-var49 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__column_end]))(var_endl) /* column_end on <var_endl:nullable Location(Location)>*/;
-var50 = ((long (*)(val*))(var_endl->class->vft[COLOR_location__Location__column_end]))(var_endl) /* column_end on <var_endl:nullable Location(Location)>*/;
-((void (*)(val*, val*, long, long, long, long))(var45->class->vft[COLOR_location__Location__init]))(var45, var46, var47, var48, var49, var50) /* init on <var45:Location>*/;
-CHECK_NEW_location__Location(var45);
-var_loc51 = var45;
-var52 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var52 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2030);
-exit(1);
-}
-var53 = ((val* (*)(val*))(var52->class->vft[COLOR_abstract_collection__Collection__iterator]))(var52) /* iterator on <var52:Array[Prod]>*/;
-for(;;) {
-var54 = ((short int (*)(val*))(var53->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var53) /* is_ok on <var53:Iterator[nullable Object]>*/;
-if(!var54) break;
-var55 = ((val* (*)(val*))(var53->class->vft[COLOR_abstract_collection__Iterator__item]))(var53) /* item on <var53:Iterator[nullable Object]>*/;
-var_no56 = var55;
-((void (*)(val*, val*))(var_no56->class->vft[COLOR_parser_nodes__Prod__location_61d]))(var_no56, var_loc51) /* location= on <var_no56:Prod>*/;
-CONTINUE_label57: (void)0;
-((void (*)(val*))(var53->class->vft[COLOR_abstract_collection__Iterator__next]))(var53) /* next on <var53:Iterator[nullable Object]>*/;
-}
-BREAK_label57: (void)0;
-var58 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var58 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2034);
-exit(1);
-}
-((void (*)(val*))(var58->class->vft[COLOR_abstract_collection__RemovableCollection__clear]))(var58) /* clear on <var58:Array[Prod]>*/;
-} else {
-}
-} else {
-var59 = self->attrs[COLOR_parser__ComputeProdLocationVisitor___need_after_epsilons].val; /* _need_after_epsilons on <self:ComputeProdLocationVisitor> */
-if (var59 == NULL) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Uninitialized attribute _need_after_epsilons", "src/parser/parser.nit", 2038);
-exit(1);
-}
-((void (*)(val*, val*))(var59->class->vft[COLOR_abstract_collection__SimpleCollection__add]))(var59, var_n) /* add on <var59:Array[Prod]>*/;
-}
-}
-RET_LABEL:;
-}
-/* method parser#ComputeProdLocationVisitor#visit for (self: Object, ANode) */
-void VIRTUAL_parser__ComputeProdLocationVisitor__visit(val* self, val* p0) {
-parser__ComputeProdLocationVisitor__visit(self, p0);
-RET_LABEL:;
-}
-/* method parser#ComputeProdLocationVisitor#init for (self: ComputeProdLocationVisitor) */
-void parser__ComputeProdLocationVisitor__init(val* self) {
-((void (*)(val*))(self->class->vft[COLOR_parser_nodes__Visitor__init]))(self) /* init on <self:ComputeProdLocationVisitor>*/;
-RET_LABEL:;
-}
-/* method parser#ComputeProdLocationVisitor#init for (self: Object) */
-void VIRTUAL_parser__ComputeProdLocationVisitor__init(val* self) {
-parser__ComputeProdLocationVisitor__init(self);
-RET_LABEL:;
-}
-/* method parser#ReduceAction#action for (self: ReduceAction, Parser) */
-void parser__ReduceAction__action(val* self, val* p0) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Deferred method called", "src/parser/parser.nit", 2048);
-exit(1);
-RET_LABEL:;
-}
-/* method parser#ReduceAction#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction__action(val* self, val* p0) {
-parser__ReduceAction__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction#concat for (self: ReduceAction, Array[Object], Array[Object]): Array[Object] */
-val* parser__ReduceAction__concat(val* self, val* p0, val* p1) {
-val* var /* : Array[Object] */;
-val* var_l1 /* var l1: Array[Object] */;
-val* var_l2 /* var l2: Array[Object] */;
-short int var1 /* : Bool */;
-var_l1 = p0;
-var_l2 = p1;
-var1 = ((short int (*)(val*))(var_l1->class->vft[COLOR_abstract_collection__Collection__is_empty]))(var_l1) /* is_empty on <var_l1:Array[Object]>*/;
-if (var1){
-var = var_l2;
-goto RET_LABEL;
-} else {
-}
-((void (*)(val*, val*))(var_l1->class->vft[COLOR_abstract_collection__Sequence__append]))(var_l1, var_l2) /* append on <var_l1:Array[Object]>*/;
-var = var_l1;
-goto RET_LABEL;
-RET_LABEL:;
-return var;
-}
-/* method parser#ReduceAction#concat for (self: Object, Array[Object], Array[Object]): Array[Object] */
-val* VIRTUAL_parser__ReduceAction__concat(val* self, val* p0, val* p1) {
-val* var /* : Array[Object] */;
-val* var1 /* : Array[Object] */;
-var1 = parser__ReduceAction__concat(self, p0, p1);
-var = var1;
-RET_LABEL:;
-return var;
-}
-/* method parser#ReduceAction#init for (self: ReduceAction, Int) */
-void parser__ReduceAction__init(val* self, long p0) {
-long var_g /* var g: Int */;
-var_g = p0;
-self->attrs[COLOR_parser__ReduceAction___goto].l = var_g; /* _goto on <self:ReduceAction> */
-RET_LABEL:;
-}
-/* method parser#ReduceAction#init for (self: Object, Int) */
-void VIRTUAL_parser__ReduceAction__init(val* self, long p0) {
-parser__ReduceAction__init(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction0#action for (self: ReduceAction0, Parser) */
-void parser__ReduceAction0__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : Array[Object] */;
-val* var_listnode3 /* var listnode3: Array[Object] */;
-val* var2 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var3 /* : Array[Object] */;
-val* var_listnode5 /* var listnode5: Array[Object] */;
-val* var4 /* : AModule */;
-val* var5 /* : null */;
-val* var_pmodulenode1 /* var pmodulenode1: nullable AModule */;
-long var6 /* : Int */;
-long var7 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var1->class->vft[COLOR_array__Array__init]))(var1) /* init on <var1:Array[Object]>*/;
-CHECK_NEW_array__Array(var1);
-var_listnode3 = var1;
-var2 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
-var_listnode4 = var2;
-var3 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
-var_listnode5 = var3;
-var4 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
-var5 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var4->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var4, var5, var_listnode3, var_listnode4, var_listnode5) /* init_amodule on <var4:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var4);
-var_pmodulenode1 = var4;
-var_node_list = var_pmodulenode1;
-var6 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction0> */
-var7 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var6) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var7, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction0#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction0__action(val* self, val* p0) {
-parser__ReduceAction0__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction1#action for (self: ReduceAction1, Parser) */
-void parser__ReduceAction1__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var2 /* : Array[Object] */;
-val* var_listnode3 /* var listnode3: Array[Object] */;
-val* var3 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var4 /* : Array[Object] */;
-val* var_listnode5 /* var listnode5: Array[Object] */;
-val* var_pmoduledeclnode2 /* var pmoduledeclnode2: nullable Object */;
-short int var5 /* : Bool */;
-int cltype;
-int idtype;
-val* var6 /* : AModule */;
-val* var_pmodulenode1 /* var pmodulenode1: nullable AModule */;
-long var7 /* : Int */;
-long var8 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var1;
-var2 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
-var_listnode3 = var2;
-var3 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
-var_listnode4 = var3;
-var4 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
-var_listnode5 = var4;
-var_pmoduledeclnode2 = var_nodearraylist1;
-/* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
-cltype = type_nullable_parser_nodes__AModuledecl.color;
-idtype = type_nullable_parser_nodes__AModuledecl.id;
-if(var_pmoduledeclnode2 == NULL) {
-var5 = 1;
-} else {
-if(cltype >= var_pmoduledeclnode2->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2087);
-exit(1);
-}
-var6 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
-((void (*)(val*, val*, val*, val*, val*))(var6->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var6, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode5) /* init_amodule on <var6:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var6);
-var_pmodulenode1 = var6;
-var_node_list = var_pmodulenode1;
-var7 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction1> */
-var8 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var7) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var8, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction1#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction1__action(val* self, val* p0) {
-parser__ReduceAction1__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction2#action for (self: ReduceAction2, Parser) */
-void parser__ReduceAction2__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var2 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var3 /* : Array[Object] */;
-val* var_listnode5 /* var listnode5: Array[Object] */;
-val* var4 /* : Array[Object] */;
-val* var_listnode6 /* var listnode6: Array[Object] */;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype;
-int idtype;
-val* var6 /* : Array[Object] */;
-val* var7 /* : AModule */;
-val* var8 /* : null */;
-val* var_pmodulenode1 /* var pmodulenode1: nullable AModule */;
-long var9 /* : Int */;
-long var10 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var1;
-var2 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
-var_listnode4 = var2;
-var3 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
-var_listnode5 = var3;
-var4 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
-var_listnode6 = var4;
-var_listnode3 = var_nodearraylist1;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype = type_array__Arraykernel__Object.color;
-idtype = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var5 = 0;
-} else {
-if(cltype >= var_listnode3->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_listnode3->type->type_table[cltype] == idtype;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2108);
-exit(1);
-}
-var6 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction2>*/;
-var_listnode4 = var6;
-var7 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
-var8 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var7, var8, var_listnode4, var_listnode5, var_listnode6) /* init_amodule on <var7:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var7);
-var_pmodulenode1 = var7;
-var_node_list = var_pmodulenode1;
-var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction2> */
-var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction2#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction2__action(val* self, val* p0) {
-parser__ReduceAction2__action(self, p0);
-RET_LABEL:;
-}
 /* method parser#ReduceAction3#action for (self: ReduceAction3, Parser) */
 void parser__ReduceAction3__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
@@ -556,15 +36,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -580,8 +57,9 @@ var6 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2131);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1881);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -597,14 +75,14 @@ var7 = var_listnode3->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2133);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1883);
+show_backtrace(1);
 }
 var10 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction3>*/;
 var_listnode4 = var10;
 var11 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var11, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode6) /* init_amodule on <var11:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var11);
 var_pmodulenode1 = var11;
 var_node_list = var_pmodulenode1;
 var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction3> */
@@ -647,15 +125,12 @@ var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var1;
 var2 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
 var_listnode3 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode5 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode6 = var4;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -671,15 +146,15 @@ var5 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2155);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1905);
+show_backtrace(1);
 }
 var6 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction4>*/;
 var_listnode5 = var6;
 var7 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var8 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var7, var8, var_listnode3, var_listnode5, var_listnode6) /* init_amodule on <var7:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var7);
 var_pmodulenode1 = var7;
 var_node_list = var_pmodulenode1;
 var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction4> */
@@ -729,15 +204,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -753,8 +225,9 @@ var6 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2178);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1928);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -770,14 +243,14 @@ var7 = var_listnode4->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2180);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1930);
+show_backtrace(1);
 }
 var10 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction5>*/;
 var_listnode5 = var10;
 var11 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var11, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode6) /* init_amodule on <var11:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var11);
 var_pmodulenode1 = var11;
 var_node_list = var_pmodulenode1;
 var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction5> */
@@ -829,15 +302,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode6 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -853,8 +323,9 @@ var6 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2203);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1953);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction6>*/;
 var_listnode4 = var7;
@@ -872,15 +343,15 @@ var8 = var_listnode5->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2206);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1956);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction6>*/;
 var_listnode6 = var11;
 var12 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var13 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var12, var13, var_listnode4, var_listnode6, var_listnode7) /* init_amodule on <var12:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var12);
 var_pmodulenode1 = var12;
 var_node_list = var_pmodulenode1;
 var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction6> */
@@ -939,15 +410,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -963,8 +431,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2230);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1980);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -980,8 +449,9 @@ var8 = var_listnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2232);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1982);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction7>*/;
 var_listnode4 = var11;
@@ -999,14 +469,14 @@ var12 = var_listnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2235);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 1985);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction7>*/;
 var_listnode6 = var15;
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode7) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction7> */
@@ -1049,15 +519,12 @@ var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var1;
 var2 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
 var_listnode3 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode6 = var4;
 var_listnode5 = var_nodearraylist1;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -1073,15 +540,15 @@ var5 = var_listnode5->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2257);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2007);
+show_backtrace(1);
 }
 var6 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction8>*/;
 var_listnode6 = var6;
 var7 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var8 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var7, var8, var_listnode3, var_listnode4, var_listnode6) /* init_amodule on <var7:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var7);
 var_pmodulenode1 = var7;
 var_node_list = var_pmodulenode1;
 var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction8> */
@@ -1131,15 +598,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -1155,8 +619,9 @@ var6 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2280);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2030);
+show_backtrace(1);
 }
 var_listnode5 = var_nodearraylist2;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -1172,14 +637,14 @@ var7 = var_listnode5->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2282);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2032);
+show_backtrace(1);
 }
 var10 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction9>*/;
 var_listnode6 = var10;
 var11 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var11, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode6) /* init_amodule on <var11:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var11);
 var_pmodulenode1 = var11;
 var_node_list = var_pmodulenode1;
 var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction9> */
@@ -1231,15 +696,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -1255,8 +717,9 @@ var6 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2305);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2055);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction10>*/;
 var_listnode4 = var7;
@@ -1274,15 +737,15 @@ var8 = var_listnode6->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2308);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2058);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction10>*/;
 var_listnode7 = var11;
 var12 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var13 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var12, var13, var_listnode4, var_listnode5, var_listnode7) /* init_amodule on <var12:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var12);
 var_pmodulenode1 = var12;
 var_node_list = var_pmodulenode1;
 var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction10> */
@@ -1341,15 +804,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -1365,8 +825,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2332);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2082);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -1382,8 +843,9 @@ var8 = var_listnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2334);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2084);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction11>*/;
 var_listnode4 = var11;
@@ -1401,14 +863,14 @@ var12 = var_listnode6->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2337);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2087);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction11>*/;
 var_listnode7 = var15;
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode7) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction11> */
@@ -1460,15 +922,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -1484,8 +943,9 @@ var6 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2360);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2110);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction12>*/;
 var_listnode5 = var7;
@@ -1503,15 +963,15 @@ var8 = var_listnode6->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2363);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2113);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction12>*/;
 var_listnode7 = var11;
 var12 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var13 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var12, var13, var_listnode3, var_listnode5, var_listnode7) /* init_amodule on <var12:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var12);
 var_pmodulenode1 = var12;
 var_node_list = var_pmodulenode1;
 var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction12> */
@@ -1570,15 +1030,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -1594,8 +1051,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2387);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2137);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -1611,8 +1069,9 @@ var8 = var_listnode4->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2389);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2139);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction13>*/;
 var_listnode5 = var11;
@@ -1630,14 +1089,14 @@ var12 = var_listnode6->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2392);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2142);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction13>*/;
 var_listnode7 = var15;
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode7) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction13> */
@@ -1698,15 +1157,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode8 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -1722,8 +1178,9 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2416);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2166);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction14>*/;
 var_listnode4 = var8;
@@ -1741,8 +1198,9 @@ var9 = var_listnode5->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2419);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2169);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction14>*/;
 var_listnode6 = var12;
@@ -1760,15 +1218,15 @@ var13 = var_listnode7->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2422);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2172);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction14>*/;
 var_listnode8 = var16;
 var17 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var18 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var17, var18, var_listnode4, var_listnode6, var_listnode8) /* init_amodule on <var17:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var17);
 var_pmodulenode1 = var17;
 var_node_list = var_pmodulenode1;
 var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction14> */
@@ -1836,15 +1294,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode8 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -1860,8 +1315,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2447);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2197);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -1877,8 +1333,9 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2449);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2199);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction15>*/;
 var_listnode4 = var12;
@@ -1896,8 +1353,9 @@ var13 = var_listnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2452);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2202);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction15>*/;
 var_listnode6 = var16;
@@ -1915,14 +1373,14 @@ var17 = var_listnode7->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2455);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2205);
+show_backtrace(1);
 }
 var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction15>*/;
 var_listnode8 = var20;
 var21 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var21, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode8) /* init_amodule on <var21:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var21);
 var_pmodulenode1 = var21;
 var_node_list = var_pmodulenode1;
 var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction15> */
@@ -1971,19 +1429,15 @@ var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var1;
 var2 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
 var_listnode3 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode8 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode6 = var_nodearraylist1;
 /* <var_listnode6:nullable Object> isa Array[Object] */
@@ -1999,14 +1453,14 @@ var6 = var_listnode6->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2478);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2228);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction16>*/;
 var_listnode7 = var7;
 var8 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var8->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var8, var_listnode7) /* init_atopclassdef on <var8:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var8);
 var_pclassdefnode5 = var8;
 var9 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -2021,7 +1475,6 @@ if (var10){
 var11 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var12 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var11, var12, var_listnode3, var_listnode4, var_listnode8) /* init_amodule on <var11:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var11);
 var_pmodulenode1 = var11;
 var_node_list = var_pmodulenode1;
 var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction16> */
@@ -2077,15 +1530,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode8 = var5;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -2101,12 +1551,12 @@ var6 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2507);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2257);
+show_backtrace(1);
 }
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode7 = var7;
 var_listnode6 = var_nodearraylist2;
 /* <var_listnode6:nullable Object> isa Array[Object] */
@@ -2122,14 +1572,14 @@ var8 = var_listnode6->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2510);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2260);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction17>*/;
 var_listnode7 = var11;
 var12 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var12->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var12, var_listnode7) /* init_atopclassdef on <var12:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var12);
 var_pclassdefnode5 = var12;
 var13 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -2143,7 +1593,6 @@ if (var14){
 }
 var15 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var15, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode8) /* init_amodule on <var15:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var15);
 var_pmodulenode1 = var15;
 var_node_list = var_pmodulenode1;
 var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction17> */
@@ -2201,15 +1650,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode9 = var5;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -2225,14 +1671,14 @@ var6 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2539);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2289);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction18>*/;
 var_listnode4 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode8 = var8;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2248,14 +1694,14 @@ var9 = var_listnode7->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2543);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2293);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction18>*/;
 var_listnode8 = var12;
 var13 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var13->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var13, var_listnode8) /* init_atopclassdef on <var13:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var13);
 var_pclassdefnode6 = var13;
 var14 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -2270,7 +1716,6 @@ if (var15){
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var17 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var17, var_listnode4, var_listnode5, var_listnode9) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction18> */
@@ -2335,15 +1780,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode9 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -2359,8 +1801,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2573);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2323);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -2376,14 +1819,14 @@ var8 = var_listnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2575);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2325);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction19>*/;
 var_listnode4 = var11;
 var12 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
 var_listnode8 = var12;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2399,14 +1842,14 @@ var13 = var_listnode7->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2579);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2329);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction19>*/;
 var_listnode8 = var16;
 var17 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var17->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var17, var_listnode8) /* init_atopclassdef on <var17:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var17);
 var_pclassdefnode6 = var17;
 var18 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -2420,7 +1863,6 @@ if (var19){
 }
 var20 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var20, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode9) /* init_amodule on <var20:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var20);
 var_pmodulenode1 = var20;
 var_node_list = var_pmodulenode1;
 var21 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction19> */
@@ -2478,15 +1920,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode9 = var5;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -2502,14 +1941,14 @@ var6 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2608);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2358);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction20>*/;
 var_listnode5 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode8 = var8;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2525,14 +1964,14 @@ var9 = var_listnode7->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2612);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2362);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction20>*/;
 var_listnode8 = var12;
 var13 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var13->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var13, var_listnode8) /* init_atopclassdef on <var13:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var13);
 var_pclassdefnode6 = var13;
 var14 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -2547,7 +1986,6 @@ if (var15){
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var17 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var17, var_listnode3, var_listnode5, var_listnode9) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction20> */
@@ -2612,15 +2050,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode9 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -2636,8 +2071,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2642);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2392);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -2653,14 +2089,14 @@ var8 = var_listnode4->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2644);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2394);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction21>*/;
 var_listnode5 = var11;
 var12 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
 var_listnode8 = var12;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2676,14 +2112,14 @@ var13 = var_listnode7->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2648);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2398);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction21>*/;
 var_listnode8 = var16;
 var17 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var17->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var17, var_listnode8) /* init_atopclassdef on <var17:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var17);
 var_pclassdefnode6 = var17;
 var18 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -2697,7 +2133,6 @@ if (var19){
 }
 var20 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var20, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode9) /* init_amodule on <var20:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var20);
 var_pmodulenode1 = var20;
 var_node_list = var_pmodulenode1;
 var21 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction21> */
@@ -2764,15 +2199,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -2788,8 +2220,9 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2678);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2428);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction22>*/;
 var_listnode4 = var8;
@@ -2807,14 +2240,14 @@ var9 = var_listnode5->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2681);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2431);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction22>*/;
 var_listnode6 = var12;
 var13 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var13->class->vft[COLOR_array__Array__init]))(var13) /* init on <var13:Array[Object]>*/;
-CHECK_NEW_array__Array(var13);
 var_listnode9 = var13;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -2830,14 +2263,14 @@ var14 = var_listnode8->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2685);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2435);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction22>*/;
 var_listnode9 = var17;
 var18 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var18->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var18, var_listnode9) /* init_atopclassdef on <var18:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var18);
 var_pclassdefnode7 = var18;
 var19 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -2852,7 +2285,6 @@ if (var20){
 var21 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var22 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var21, var22, var_listnode4, var_listnode6, var_listnode10) /* init_amodule on <var21:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var21);
 var_pmodulenode1 = var21;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction22> */
@@ -2926,15 +2358,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -2950,8 +2379,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2716);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2466);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -2967,8 +2397,9 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2718);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2468);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction23>*/;
 var_listnode4 = var12;
@@ -2986,14 +2417,14 @@ var13 = var_listnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2721);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2471);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction23>*/;
 var_listnode6 = var16;
 var17 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var17->class->vft[COLOR_array__Array__init]))(var17) /* init on <var17:Array[Object]>*/;
-CHECK_NEW_array__Array(var17);
 var_listnode9 = var17;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -3009,14 +2440,14 @@ var18 = var_listnode8->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2725);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2475);
+show_backtrace(1);
 }
 var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction23>*/;
 var_listnode9 = var21;
 var22 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var22->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var22, var_listnode9) /* init_atopclassdef on <var22:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var22);
 var_pclassdefnode7 = var22;
 var23 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -3030,7 +2461,6 @@ if (var24){
 }
 var25 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var25, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode10) /* init_amodule on <var25:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var25);
 var_pmodulenode1 = var25;
 var_node_list = var_pmodulenode1;
 var26 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction23> */
@@ -3088,15 +2518,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode9 = var5;
 var_listnode5 = var_nodearraylist1;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -3112,12 +2539,12 @@ var6 = var_listnode5->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2754);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2504);
+show_backtrace(1);
 }
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode8 = var7;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -3133,14 +2560,14 @@ var8 = var_listnode7->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2757);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2507);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction24>*/;
 var_listnode8 = var11;
 var12 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var12->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var12, var_listnode8) /* init_atopclassdef on <var12:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var12);
 var_pclassdefnode6 = var12;
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode5) /* concat on <self:ReduceAction24>*/;
 var_listnode9 = var13;
@@ -3157,7 +2584,6 @@ if (var15){
 var16 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var17 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var16, var17, var_listnode3, var_listnode4, var_listnode9) /* init_amodule on <var16:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var16);
 var_pmodulenode1 = var16;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction24> */
@@ -3222,15 +2648,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode9 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -3246,8 +2669,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2788);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2538);
+show_backtrace(1);
 }
 var_listnode5 = var_nodearraylist2;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -3263,12 +2687,12 @@ var8 = var_listnode5->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2790);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2540);
+show_backtrace(1);
 }
 var11 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var11->class->vft[COLOR_array__Array__init]))(var11) /* init on <var11:Array[Object]>*/;
-CHECK_NEW_array__Array(var11);
 var_listnode8 = var11;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -3284,14 +2708,14 @@ var12 = var_listnode7->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2793);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2543);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction25>*/;
 var_listnode8 = var15;
 var16 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var16->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var16, var_listnode8) /* init_atopclassdef on <var16:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var16);
 var_pclassdefnode6 = var16;
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode5) /* concat on <self:ReduceAction25>*/;
 var_listnode9 = var17;
@@ -3307,7 +2731,6 @@ if (var19){
 }
 var20 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var20, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode9) /* init_amodule on <var20:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var20);
 var_pmodulenode1 = var20;
 var_node_list = var_pmodulenode1;
 var21 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction25> */
@@ -3374,15 +2797,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -3398,8 +2818,9 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2824);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2574);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction26>*/;
 var_listnode4 = var8;
@@ -3417,12 +2838,12 @@ var9 = var_listnode6->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2827);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2577);
+show_backtrace(1);
 }
 var12 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
 var_listnode9 = var12;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -3438,14 +2859,14 @@ var13 = var_listnode8->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2830);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2580);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction26>*/;
 var_listnode9 = var16;
 var17 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var17->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var17, var_listnode9) /* init_atopclassdef on <var17:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var17);
 var_pclassdefnode7 = var17;
 var18 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode6) /* concat on <self:ReduceAction26>*/;
 var_listnode10 = var18;
@@ -3462,7 +2883,6 @@ if (var20){
 var21 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var22 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var21, var22, var_listnode4, var_listnode5, var_listnode10) /* init_amodule on <var21:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var21);
 var_pmodulenode1 = var21;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction26> */
@@ -3536,15 +2956,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -3560,8 +2977,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2862);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2612);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -3577,8 +2995,9 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2864);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2614);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction27>*/;
 var_listnode4 = var12;
@@ -3596,12 +3015,12 @@ var13 = var_listnode6->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2867);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2617);
+show_backtrace(1);
 }
 var16 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var16->class->vft[COLOR_array__Array__init]))(var16) /* init on <var16:Array[Object]>*/;
-CHECK_NEW_array__Array(var16);
 var_listnode9 = var16;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -3617,14 +3036,14 @@ var17 = var_listnode8->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2870);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2620);
+show_backtrace(1);
 }
 var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction27>*/;
 var_listnode9 = var20;
 var21 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var21->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var21, var_listnode9) /* init_atopclassdef on <var21:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var21);
 var_pclassdefnode7 = var21;
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode6) /* concat on <self:ReduceAction27>*/;
 var_listnode10 = var22;
@@ -3640,7 +3059,6 @@ if (var24){
 }
 var25 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var25, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode10) /* init_amodule on <var25:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var25);
 var_pmodulenode1 = var25;
 var_node_list = var_pmodulenode1;
 var26 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction27> */
@@ -3707,15 +3125,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -3731,8 +3146,9 @@ var7 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2901);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2651);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction28>*/;
 var_listnode5 = var8;
@@ -3750,12 +3166,12 @@ var9 = var_listnode6->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2904);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2654);
+show_backtrace(1);
 }
 var12 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
 var_listnode9 = var12;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -3771,14 +3187,14 @@ var13 = var_listnode8->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2907);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2657);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction28>*/;
 var_listnode9 = var16;
 var17 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var17->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var17, var_listnode9) /* init_atopclassdef on <var17:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var17);
 var_pclassdefnode7 = var17;
 var18 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode6) /* concat on <self:ReduceAction28>*/;
 var_listnode10 = var18;
@@ -3795,7 +3211,6 @@ if (var20){
 var21 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var22 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var21, var22, var_listnode3, var_listnode5, var_listnode10) /* init_amodule on <var21:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var21);
 var_pmodulenode1 = var21;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction28> */
@@ -3869,15 +3284,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode3 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -3893,8 +3305,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2939);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2689);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -3910,8 +3323,9 @@ var9 = var_listnode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2941);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2691);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction29>*/;
 var_listnode5 = var12;
@@ -3929,12 +3343,12 @@ var13 = var_listnode6->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2944);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2694);
+show_backtrace(1);
 }
 var16 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var16->class->vft[COLOR_array__Array__init]))(var16) /* init on <var16:Array[Object]>*/;
-CHECK_NEW_array__Array(var16);
 var_listnode9 = var16;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -3950,14 +3364,14 @@ var17 = var_listnode8->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2947);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2697);
+show_backtrace(1);
 }
 var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction29>*/;
 var_listnode9 = var20;
 var21 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var21->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var21, var_listnode9) /* init_atopclassdef on <var21:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var21);
 var_pclassdefnode7 = var21;
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode6) /* concat on <self:ReduceAction29>*/;
 var_listnode10 = var22;
@@ -3973,7 +3387,6 @@ if (var24){
 }
 var25 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var25, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode10) /* init_amodule on <var25:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var25);
 var_pmodulenode1 = var25;
 var_node_list = var_pmodulenode1;
 var26 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction29> */
@@ -4049,15 +3462,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode11 = var7;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -4073,8 +3483,9 @@ var8 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2979);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2729);
+show_backtrace(1);
 }
 var9 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction30>*/;
 var_listnode4 = var9;
@@ -4092,8 +3503,9 @@ var10 = var_listnode5->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2982);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2732);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction30>*/;
 var_listnode6 = var13;
@@ -4111,12 +3523,12 @@ var14 = var_listnode7->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2985);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2735);
+show_backtrace(1);
 }
 var17 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var17->class->vft[COLOR_array__Array__init]))(var17) /* init on <var17:Array[Object]>*/;
-CHECK_NEW_array__Array(var17);
 var_listnode10 = var17;
 var_listnode9 = var_nodearraylist4;
 /* <var_listnode9:nullable Object> isa Array[Object] */
@@ -4132,14 +3544,14 @@ var18 = var_listnode9->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 2988);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2738);
+show_backtrace(1);
 }
 var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode9) /* concat on <self:ReduceAction30>*/;
 var_listnode10 = var21;
 var22 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var22->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var22, var_listnode10) /* init_atopclassdef on <var22:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var22);
 var_pclassdefnode8 = var22;
 var23 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode7) /* concat on <self:ReduceAction30>*/;
 var_listnode11 = var23;
@@ -4156,7 +3568,6 @@ if (var25){
 var26 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var27 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var26, var27, var_listnode4, var_listnode6, var_listnode11) /* init_amodule on <var26:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var26);
 var_pmodulenode1 = var26;
 var_node_list = var_pmodulenode1;
 var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction30> */
@@ -4239,15 +3650,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode6 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode11 = var8;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -4263,8 +3671,9 @@ var9 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3021);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2771);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -4280,8 +3689,9 @@ var10 = var_listnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3023);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2773);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction31>*/;
 var_listnode4 = var13;
@@ -4299,8 +3709,9 @@ var14 = var_listnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3026);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2776);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction31>*/;
 var_listnode6 = var17;
@@ -4318,12 +3729,12 @@ var18 = var_listnode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3029);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2779);
+show_backtrace(1);
 }
 var21 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var21->class->vft[COLOR_array__Array__init]))(var21) /* init on <var21:Array[Object]>*/;
-CHECK_NEW_array__Array(var21);
 var_listnode10 = var21;
 var_listnode9 = var_nodearraylist5;
 /* <var_listnode9:nullable Object> isa Array[Object] */
@@ -4339,14 +3750,14 @@ var22 = var_listnode9->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3032);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2782);
+show_backtrace(1);
 }
 var25 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode9) /* concat on <self:ReduceAction31>*/;
 var_listnode10 = var25;
 var26 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var26->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var26, var_listnode10) /* init_atopclassdef on <var26:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var26);
 var_pclassdefnode8 = var26;
 var27 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode7) /* concat on <self:ReduceAction31>*/;
 var_listnode11 = var27;
@@ -4362,7 +3773,6 @@ if (var29){
 }
 var30 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var30->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var30, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode11) /* init_amodule on <var30:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var30);
 var_pmodulenode1 = var30;
 var_node_list = var_pmodulenode1;
 var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction31> */
@@ -4406,15 +3816,12 @@ var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var1;
 var2 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
-CHECK_NEW_array__Array(var2);
 var_listnode3 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode6 = var4;
 var_pclassdefnode5 = var_nodearraylist1;
 /* <var_pclassdefnode5:nullable Object> isa nullable AClassdef */
@@ -4430,8 +3837,9 @@ var5 = var_pclassdefnode5->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3061);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2811);
+show_backtrace(1);
 }
 var6 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -4446,7 +3854,6 @@ if (var7){
 var8 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var9 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var8->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var8, var9, var_listnode3, var_listnode4, var_listnode6) /* init_amodule on <var8:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var8);
 var_pmodulenode1 = var8;
 var_node_list = var_pmodulenode1;
 var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction32> */
@@ -4497,15 +3904,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -4521,8 +3925,9 @@ var6 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3086);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2836);
+show_backtrace(1);
 }
 var_pclassdefnode5 = var_nodearraylist2;
 /* <var_pclassdefnode5:nullable Object> isa nullable AClassdef */
@@ -4538,8 +3943,9 @@ var7 = var_pclassdefnode5->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3088);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2838);
+show_backtrace(1);
 }
 var10 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -4553,7 +3959,6 @@ if (var11){
 }
 var12 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var12, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode6) /* init_amodule on <var12:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var12);
 var_pmodulenode1 = var12;
 var_node_list = var_pmodulenode1;
 var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction33> */
@@ -4606,15 +4011,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode4 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -4630,8 +4032,9 @@ var6 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3113);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2863);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction34>*/;
 var_listnode4 = var7;
@@ -4649,8 +4052,9 @@ var8 = var_pclassdefnode6->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3116);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2866);
+show_backtrace(1);
 }
 var11 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -4665,7 +4069,6 @@ if (var12){
 var13 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var14 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var13, var14, var_listnode4, var_listnode5, var_listnode7) /* init_amodule on <var13:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var13);
 var_pmodulenode1 = var13;
 var_node_list = var_pmodulenode1;
 var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction34> */
@@ -4725,15 +4128,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -4749,8 +4149,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3142);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2892);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -4766,8 +4167,9 @@ var8 = var_listnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3144);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2894);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction35>*/;
 var_listnode4 = var11;
@@ -4785,8 +4187,9 @@ var12 = var_pclassdefnode6->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3147);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2897);
+show_backtrace(1);
 }
 var15 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -4800,7 +4203,6 @@ if (var16){
 }
 var17 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var17, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode7) /* init_amodule on <var17:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var17);
 var_pmodulenode1 = var17;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction35> */
@@ -4853,15 +4255,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode5 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -4877,8 +4276,9 @@ var6 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3172);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2922);
+show_backtrace(1);
 }
 var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction36>*/;
 var_listnode5 = var7;
@@ -4896,8 +4296,9 @@ var8 = var_pclassdefnode6->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3175);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2925);
+show_backtrace(1);
 }
 var11 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -4912,7 +4313,6 @@ if (var12){
 var13 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var14 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var13, var14, var_listnode3, var_listnode5, var_listnode7) /* init_amodule on <var13:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var13);
 var_pmodulenode1 = var13;
 var_node_list = var_pmodulenode1;
 var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction36> */
@@ -4972,15 +4372,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -4996,8 +4393,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3201);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2951);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -5013,8 +4411,9 @@ var8 = var_listnode4->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3203);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2953);
+show_backtrace(1);
 }
 var11 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction37>*/;
 var_listnode5 = var11;
@@ -5032,8 +4431,9 @@ var12 = var_pclassdefnode6->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3206);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2956);
+show_backtrace(1);
 }
 var15 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -5047,7 +4447,6 @@ if (var16){
 }
 var17 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var17, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode7) /* init_amodule on <var17:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var17);
 var_pmodulenode1 = var17;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction37> */
@@ -5109,15 +4508,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode6 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode8 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -5133,8 +4529,9 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3232);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2982);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction38>*/;
 var_listnode4 = var8;
@@ -5152,8 +4549,9 @@ var9 = var_listnode5->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3235);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2985);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction38>*/;
 var_listnode6 = var12;
@@ -5171,8 +4569,9 @@ var13 = var_pclassdefnode7->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3238);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 2988);
+show_backtrace(1);
 }
 var16 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -5187,7 +4586,6 @@ if (var17){
 var18 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var19 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var18, var19, var_listnode4, var_listnode6, var_listnode8) /* init_amodule on <var18:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var18);
 var_pmodulenode1 = var18;
 var_node_list = var_pmodulenode1;
 var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction38> */
@@ -5256,15 +4654,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode8 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -5280,8 +4675,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3265);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3015);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -5297,8 +4693,9 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3267);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3017);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction39>*/;
 var_listnode4 = var12;
@@ -5316,8 +4713,9 @@ var13 = var_listnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3270);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3020);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction39>*/;
 var_listnode6 = var16;
@@ -5335,8 +4733,9 @@ var17 = var_pclassdefnode7->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3273);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3023);
+show_backtrace(1);
 }
 var20 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -5350,7 +4749,6 @@ if (var21){
 }
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode8) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction39> */
@@ -5403,15 +4801,12 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode7 = var5;
 var_listnode5 = var_nodearraylist1;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -5427,8 +4822,9 @@ var6 = var_listnode5->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3298);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3048);
+show_backtrace(1);
 }
 var_pclassdefnode6 = var_nodearraylist2;
 /* <var_pclassdefnode6:nullable Object> isa nullable AClassdef */
@@ -5444,8 +4840,9 @@ var7 = var_pclassdefnode6->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3300);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3050);
+show_backtrace(1);
 }
 var10 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode5) /* concat on <self:ReduceAction40>*/;
 var_listnode7 = var10;
@@ -5462,7 +4859,6 @@ if (var12){
 var13 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var14 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var13, var14, var_listnode3, var_listnode4, var_listnode7) /* init_amodule on <var13:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var13);
 var_pmodulenode1 = var13;
 var_node_list = var_pmodulenode1;
 var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction40> */
@@ -5522,15 +4918,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -5546,8 +4939,9 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3327);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3077);
+show_backtrace(1);
 }
 var_listnode5 = var_nodearraylist2;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -5563,8 +4957,9 @@ var8 = var_listnode5->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3329);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3079);
+show_backtrace(1);
 }
 var_pclassdefnode6 = var_nodearraylist3;
 /* <var_pclassdefnode6:nullable Object> isa nullable AClassdef */
@@ -5580,8 +4975,9 @@ var11 = var_pclassdefnode6->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3331);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3081);
+show_backtrace(1);
 }
 var14 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode5) /* concat on <self:ReduceAction41>*/;
 var_listnode7 = var14;
@@ -5597,7 +4993,6 @@ if (var16){
 }
 var17 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var17, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode7) /* init_amodule on <var17:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var17);
 var_pmodulenode1 = var17;
 var_node_list = var_pmodulenode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction41> */
@@ -5659,15 +5054,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode8 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -5683,8 +5075,9 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3358);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3108);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction42>*/;
 var_listnode4 = var8;
@@ -5702,8 +5095,9 @@ var9 = var_listnode6->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3361);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3111);
+show_backtrace(1);
 }
 var_pclassdefnode7 = var_nodearraylist3;
 /* <var_pclassdefnode7:nullable Object> isa nullable AClassdef */
@@ -5719,8 +5113,9 @@ var12 = var_pclassdefnode7->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3363);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3113);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode6) /* concat on <self:ReduceAction42>*/;
 var_listnode8 = var15;
@@ -5737,7 +5132,6 @@ if (var17){
 var18 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var19 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var18, var19, var_listnode4, var_listnode5, var_listnode8) /* init_amodule on <var18:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var18);
 var_pmodulenode1 = var18;
 var_node_list = var_pmodulenode1;
 var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction42> */
@@ -5806,15 +5200,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode8 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -5830,8 +5221,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3391);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3141);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -5847,8 +5239,9 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3393);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3143);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction43>*/;
 var_listnode4 = var12;
@@ -5866,8 +5259,9 @@ var13 = var_listnode6->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3396);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3146);
+show_backtrace(1);
 }
 var_pclassdefnode7 = var_nodearraylist4;
 /* <var_pclassdefnode7:nullable Object> isa nullable AClassdef */
@@ -5883,8 +5277,9 @@ var16 = var_pclassdefnode7->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3398);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3148);
+show_backtrace(1);
 }
 var19 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode6) /* concat on <self:ReduceAction43>*/;
 var_listnode8 = var19;
@@ -5900,7 +5295,6 @@ if (var21){
 }
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode8) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction43> */
@@ -5962,15 +5356,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode8 = var6;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -5986,8 +5377,9 @@ var7 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3425);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3175);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction44>*/;
 var_listnode5 = var8;
@@ -6005,8 +5397,9 @@ var9 = var_listnode6->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3428);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3178);
+show_backtrace(1);
 }
 var_pclassdefnode7 = var_nodearraylist3;
 /* <var_pclassdefnode7:nullable Object> isa nullable AClassdef */
@@ -6022,8 +5415,9 @@ var12 = var_pclassdefnode7->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3430);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3180);
+show_backtrace(1);
 }
 var15 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode6) /* concat on <self:ReduceAction44>*/;
 var_listnode8 = var15;
@@ -6040,7 +5434,6 @@ if (var17){
 var18 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var19 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var18, var19, var_listnode3, var_listnode5, var_listnode8) /* init_amodule on <var18:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var18);
 var_pmodulenode1 = var18;
 var_node_list = var_pmodulenode1;
 var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction44> */
@@ -6109,15 +5502,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode3 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode8 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -6133,8 +5523,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3458);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3208);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -6150,8 +5541,9 @@ var9 = var_listnode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3460);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3210);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction45>*/;
 var_listnode5 = var12;
@@ -6169,8 +5561,9 @@ var13 = var_listnode6->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3463);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3213);
+show_backtrace(1);
 }
 var_pclassdefnode7 = var_nodearraylist4;
 /* <var_pclassdefnode7:nullable Object> isa nullable AClassdef */
@@ -6186,8 +5579,9 @@ var16 = var_pclassdefnode7->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3465);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3215);
+show_backtrace(1);
 }
 var19 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode6) /* concat on <self:ReduceAction45>*/;
 var_listnode8 = var19;
@@ -6203,7 +5597,6 @@ if (var21){
 }
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode8) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction45> */
@@ -6274,15 +5667,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode9 = var7;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -6298,8 +5688,9 @@ var8 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3493);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3243);
+show_backtrace(1);
 }
 var9 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction46>*/;
 var_listnode4 = var9;
@@ -6317,8 +5708,9 @@ var10 = var_listnode5->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3496);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3246);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction46>*/;
 var_listnode6 = var13;
@@ -6336,8 +5728,9 @@ var14 = var_listnode7->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3499);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3249);
+show_backtrace(1);
 }
 var_pclassdefnode8 = var_nodearraylist4;
 /* <var_pclassdefnode8:nullable Object> isa nullable AClassdef */
@@ -6353,8 +5746,9 @@ var17 = var_pclassdefnode8->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3501);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3251);
+show_backtrace(1);
 }
 var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode7) /* concat on <self:ReduceAction46>*/;
 var_listnode9 = var20;
@@ -6371,7 +5765,6 @@ if (var22){
 var23 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var24 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var23, var24, var_listnode4, var_listnode6, var_listnode9) /* init_amodule on <var23:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var23);
 var_pmodulenode1 = var23;
 var_node_list = var_pmodulenode1;
 var25 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction46> */
@@ -6449,15 +5842,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode6 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode9 = var8;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -6473,8 +5863,9 @@ var9 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3530);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3280);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -6490,8 +5881,9 @@ var10 = var_listnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3532);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3282);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction47>*/;
 var_listnode4 = var13;
@@ -6509,8 +5901,9 @@ var14 = var_listnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3535);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3285);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction47>*/;
 var_listnode6 = var17;
@@ -6528,8 +5921,9 @@ var18 = var_listnode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3538);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3288);
+show_backtrace(1);
 }
 var_pclassdefnode8 = var_nodearraylist5;
 /* <var_pclassdefnode8:nullable Object> isa nullable AClassdef */
@@ -6545,8 +5939,9 @@ var21 = var_pclassdefnode8->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3540);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3290);
+show_backtrace(1);
 }
 var24 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode7) /* concat on <self:ReduceAction47>*/;
 var_listnode9 = var24;
@@ -6562,7 +5957,6 @@ if (var26){
 }
 var27 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var27->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var27, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode9) /* init_amodule on <var27:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var27);
 var_pmodulenode1 = var27;
 var_node_list = var_pmodulenode1;
 var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction47> */
@@ -6621,19 +6015,15 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var2;
 var3 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var3->class->vft[COLOR_array__Array__init]))(var3) /* init on <var3:Array[Object]>*/;
-CHECK_NEW_array__Array(var3);
 var_listnode3 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode9 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode7 = var6;
 var_listnode6 = var_nodearraylist1;
 /* <var_listnode6:nullable Object> isa Array[Object] */
@@ -6649,14 +6039,14 @@ var7 = var_listnode6->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3567);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3317);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction48>*/;
 var_listnode7 = var8;
 var9 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var9->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var9, var_listnode7) /* init_atopclassdef on <var9:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var9);
 var_pclassdefnode5 = var9;
 var_pclassdefnode8 = var_nodearraylist2;
 /* <var_pclassdefnode8:nullable Object> isa nullable AClassdef */
@@ -6672,8 +6062,9 @@ var10 = var_pclassdefnode8->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3573);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3323);
+show_backtrace(1);
 }
 var13 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -6698,7 +6089,6 @@ if (var16){
 var17 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var18 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var17, var18, var_listnode3, var_listnode4, var_listnode9) /* init_amodule on <var17:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var17);
 var_pmodulenode1 = var17;
 var_node_list = var_pmodulenode1;
 var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction48> */
@@ -6764,15 +6154,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode9 = var6;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -6788,12 +6175,12 @@ var7 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3602);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3352);
+show_backtrace(1);
 }
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode7 = var8;
 var_listnode6 = var_nodearraylist2;
 /* <var_listnode6:nullable Object> isa Array[Object] */
@@ -6809,14 +6196,14 @@ var9 = var_listnode6->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3605);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3355);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode7, var_listnode6) /* concat on <self:ReduceAction49>*/;
 var_listnode7 = var12;
 var13 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var13->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var13, var_listnode7) /* init_atopclassdef on <var13:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var13);
 var_pclassdefnode5 = var13;
 var_pclassdefnode8 = var_nodearraylist3;
 /* <var_pclassdefnode8:nullable Object> isa nullable AClassdef */
@@ -6832,8 +6219,9 @@ var14 = var_pclassdefnode8->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3611);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3361);
+show_backtrace(1);
 }
 var17 = NULL;
 if (var_pclassdefnode5 == NULL) {
@@ -6857,7 +6245,6 @@ if (var20){
 }
 var21 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var21, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode9) /* init_amodule on <var21:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var21);
 var_pmodulenode1 = var21;
 var_node_list = var_pmodulenode1;
 var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction49> */
@@ -6925,15 +6312,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode4 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -6949,14 +6333,14 @@ var7 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3640);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3390);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction50>*/;
 var_listnode4 = var8;
 var9 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var9->class->vft[COLOR_array__Array__init]))(var9) /* init on <var9:Array[Object]>*/;
-CHECK_NEW_array__Array(var9);
 var_listnode8 = var9;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -6972,14 +6356,14 @@ var10 = var_listnode7->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3644);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3394);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction50>*/;
 var_listnode8 = var13;
 var14 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var14->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var14, var_listnode8) /* init_atopclassdef on <var14:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var14);
 var_pclassdefnode6 = var14;
 var_pclassdefnode9 = var_nodearraylist3;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -6995,8 +6379,9 @@ var15 = var_pclassdefnode9->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3650);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3400);
+show_backtrace(1);
 }
 var18 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -7021,7 +6406,6 @@ if (var21){
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var23 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var23, var_listnode4, var_listnode5, var_listnode10) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction50> */
@@ -7096,15 +6480,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -7120,8 +6501,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3680);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3430);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -7137,14 +6519,14 @@ var9 = var_listnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3682);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3432);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction51>*/;
 var_listnode4 = var12;
 var13 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var13->class->vft[COLOR_array__Array__init]))(var13) /* init on <var13:Array[Object]>*/;
-CHECK_NEW_array__Array(var13);
 var_listnode8 = var13;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -7160,14 +6542,14 @@ var14 = var_listnode7->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3686);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3436);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction51>*/;
 var_listnode8 = var17;
 var18 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var18->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var18, var_listnode8) /* init_atopclassdef on <var18:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var18);
 var_pclassdefnode6 = var18;
 var_pclassdefnode9 = var_nodearraylist4;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -7183,8 +6565,9 @@ var19 = var_pclassdefnode9->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3692);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3442);
+show_backtrace(1);
 }
 var22 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -7208,7 +6591,6 @@ if (var25){
 }
 var26 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var26, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode10) /* init_amodule on <var26:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var26);
 var_pmodulenode1 = var26;
 var_node_list = var_pmodulenode1;
 var27 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction51> */
@@ -7276,15 +6658,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode5 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -7300,14 +6679,14 @@ var7 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3721);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3471);
+show_backtrace(1);
 }
 var8 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction52>*/;
 var_listnode5 = var8;
 var9 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var9->class->vft[COLOR_array__Array__init]))(var9) /* init on <var9:Array[Object]>*/;
-CHECK_NEW_array__Array(var9);
 var_listnode8 = var9;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -7323,14 +6702,14 @@ var10 = var_listnode7->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3725);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3475);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction52>*/;
 var_listnode8 = var13;
 var14 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var14->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var14, var_listnode8) /* init_atopclassdef on <var14:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var14);
 var_pclassdefnode6 = var14;
 var_pclassdefnode9 = var_nodearraylist3;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -7346,8 +6725,9 @@ var15 = var_pclassdefnode9->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3731);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3481);
+show_backtrace(1);
 }
 var18 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -7372,7 +6752,6 @@ if (var21){
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var23 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var23, var_listnode3, var_listnode5, var_listnode10) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction52> */
@@ -7447,15 +6826,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode3 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -7471,8 +6847,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3761);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3511);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -7488,14 +6865,14 @@ var9 = var_listnode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3763);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3513);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction53>*/;
 var_listnode5 = var12;
 var13 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var13->class->vft[COLOR_array__Array__init]))(var13) /* init on <var13:Array[Object]>*/;
-CHECK_NEW_array__Array(var13);
 var_listnode8 = var13;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -7511,14 +6888,14 @@ var14 = var_listnode7->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3767);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3517);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction53>*/;
 var_listnode8 = var17;
 var18 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var18->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var18, var_listnode8) /* init_atopclassdef on <var18:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var18);
 var_pclassdefnode6 = var18;
 var_pclassdefnode9 = var_nodearraylist4;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -7534,8 +6911,9 @@ var19 = var_pclassdefnode9->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3773);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3523);
+show_backtrace(1);
 }
 var22 = NULL;
 if (var_pclassdefnode6 == NULL) {
@@ -7559,7 +6937,6 @@ if (var25){
 }
 var26 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var26, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode10) /* init_amodule on <var26:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var26);
 var_pmodulenode1 = var26;
 var_node_list = var_pmodulenode1;
 var27 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction53> */
@@ -7636,15 +7013,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode6 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode11 = var7;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -7660,8 +7034,9 @@ var8 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3803);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3553);
+show_backtrace(1);
 }
 var9 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction54>*/;
 var_listnode4 = var9;
@@ -7679,14 +7054,14 @@ var10 = var_listnode5->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3806);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3556);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction54>*/;
 var_listnode6 = var13;
 var14 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var14->class->vft[COLOR_array__Array__init]))(var14) /* init on <var14:Array[Object]>*/;
-CHECK_NEW_array__Array(var14);
 var_listnode9 = var14;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -7702,14 +7077,14 @@ var15 = var_listnode8->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3810);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3560);
+show_backtrace(1);
 }
 var18 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction54>*/;
 var_listnode9 = var18;
 var19 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var19->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var19, var_listnode9) /* init_atopclassdef on <var19:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var19);
 var_pclassdefnode7 = var19;
 var_pclassdefnode10 = var_nodearraylist4;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -7725,8 +7100,9 @@ var20 = var_pclassdefnode10->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3816);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3566);
+show_backtrace(1);
 }
 var23 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -7751,7 +7127,6 @@ if (var26){
 var27 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var27->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var27, var28, var_listnode4, var_listnode6, var_listnode11) /* init_amodule on <var27:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var27);
 var_pmodulenode1 = var27;
 var_node_list = var_pmodulenode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction54> */
@@ -7835,15 +7210,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode6 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode11 = var8;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -7859,8 +7231,9 @@ var9 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3847);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3597);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -7876,8 +7249,9 @@ var10 = var_listnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3849);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3599);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction55>*/;
 var_listnode4 = var13;
@@ -7895,14 +7269,14 @@ var14 = var_listnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3852);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3602);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction55>*/;
 var_listnode6 = var17;
 var18 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var18->class->vft[COLOR_array__Array__init]))(var18) /* init on <var18:Array[Object]>*/;
-CHECK_NEW_array__Array(var18);
 var_listnode9 = var18;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -7918,14 +7292,14 @@ var19 = var_listnode8->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3856);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3606);
+show_backtrace(1);
 }
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction55>*/;
 var_listnode9 = var22;
 var23 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var23->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var23, var_listnode9) /* init_atopclassdef on <var23:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var23);
 var_pclassdefnode7 = var23;
 var_pclassdefnode10 = var_nodearraylist5;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -7941,8 +7315,9 @@ var24 = var_pclassdefnode10->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3862);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3612);
+show_backtrace(1);
 }
 var27 = NULL;
 if (var_pclassdefnode7 == NULL) {
@@ -7966,7 +7341,6 @@ if (var30){
 }
 var31 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var31->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var31, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode11) /* init_amodule on <var31:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var31);
 var_pmodulenode1 = var31;
 var_node_list = var_pmodulenode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction55> */
@@ -8034,15 +7408,12 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var3;
 var4 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
 var_listnode3 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode10 = var6;
 var_listnode5 = var_nodearraylist1;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -8058,12 +7429,12 @@ var7 = var_listnode5->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3891);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3641);
+show_backtrace(1);
 }
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode8 = var8;
 var_listnode7 = var_nodearraylist2;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -8079,14 +7450,14 @@ var9 = var_listnode7->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3894);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3644);
+show_backtrace(1);
 }
 var12 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction56>*/;
 var_listnode8 = var12;
 var13 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var13->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var13, var_listnode8) /* init_atopclassdef on <var13:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var13);
 var_pclassdefnode6 = var13;
 var_pclassdefnode9 = var_nodearraylist3;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -8102,8 +7473,9 @@ var14 = var_pclassdefnode9->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3900);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3650);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode5) /* concat on <self:ReduceAction56>*/;
 var_listnode10 = var17;
@@ -8130,7 +7502,6 @@ if (var21){
 var22 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var23 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var22, var23, var_listnode3, var_listnode4, var_listnode10) /* init_amodule on <var22:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var22);
 var_pmodulenode1 = var22;
 var_node_list = var_pmodulenode1;
 var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction56> */
@@ -8205,15 +7576,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode3 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode10 = var7;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -8229,8 +7597,9 @@ var8 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3931);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3681);
+show_backtrace(1);
 }
 var_listnode5 = var_nodearraylist2;
 /* <var_listnode5:nullable Object> isa Array[Object] */
@@ -8246,12 +7615,12 @@ var9 = var_listnode5->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3933);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3683);
+show_backtrace(1);
 }
 var12 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
 var_listnode8 = var12;
 var_listnode7 = var_nodearraylist3;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -8267,14 +7636,14 @@ var13 = var_listnode7->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3936);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3686);
+show_backtrace(1);
 }
 var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction57>*/;
 var_listnode8 = var16;
 var17 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var17->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var17, var_listnode8) /* init_atopclassdef on <var17:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var17);
 var_pclassdefnode6 = var17;
 var_pclassdefnode9 = var_nodearraylist4;
 /* <var_pclassdefnode9:nullable Object> isa nullable AClassdef */
@@ -8290,8 +7659,9 @@ var18 = var_pclassdefnode9->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3942);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3692);
+show_backtrace(1);
 }
 var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode5) /* concat on <self:ReduceAction57>*/;
 var_listnode10 = var21;
@@ -8317,7 +7687,6 @@ if (var25){
 }
 var26 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var26, var_pmoduledeclnode2, var_listnode3, var_listnode4, var_listnode10) /* init_amodule on <var26:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var26);
 var_pmodulenode1 = var26;
 var_node_list = var_pmodulenode1;
 var27 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction57> */
@@ -8394,15 +7763,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode4 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode11 = var7;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -8418,8 +7784,9 @@ var8 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3973);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3723);
+show_backtrace(1);
 }
 var9 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction58>*/;
 var_listnode4 = var9;
@@ -8437,12 +7804,12 @@ var10 = var_listnode6->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3976);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3726);
+show_backtrace(1);
 }
 var13 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var13->class->vft[COLOR_array__Array__init]))(var13) /* init on <var13:Array[Object]>*/;
-CHECK_NEW_array__Array(var13);
 var_listnode9 = var13;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -8458,14 +7825,14 @@ var14 = var_listnode8->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3979);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3729);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction58>*/;
 var_listnode9 = var17;
 var18 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var18->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var18, var_listnode9) /* init_atopclassdef on <var18:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var18);
 var_pclassdefnode7 = var18;
 var_pclassdefnode10 = var_nodearraylist4;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -8481,8 +7848,9 @@ var19 = var_pclassdefnode10->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 3985);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3735);
+show_backtrace(1);
 }
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode6) /* concat on <self:ReduceAction58>*/;
 var_listnode11 = var22;
@@ -8509,7 +7877,6 @@ if (var26){
 var27 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var27->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var27, var28, var_listnode4, var_listnode5, var_listnode11) /* init_amodule on <var27:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var27);
 var_pmodulenode1 = var27;
 var_node_list = var_pmodulenode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction58> */
@@ -8593,15 +7960,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode5 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode11 = var8;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -8617,8 +7981,9 @@ var9 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4017);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3767);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -8634,8 +7999,9 @@ var10 = var_listnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4019);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3769);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction59>*/;
 var_listnode4 = var13;
@@ -8653,12 +8019,12 @@ var14 = var_listnode6->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4022);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3772);
+show_backtrace(1);
 }
 var17 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var17->class->vft[COLOR_array__Array__init]))(var17) /* init on <var17:Array[Object]>*/;
-CHECK_NEW_array__Array(var17);
 var_listnode9 = var17;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -8674,14 +8040,14 @@ var18 = var_listnode8->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4025);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3775);
+show_backtrace(1);
 }
 var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction59>*/;
 var_listnode9 = var21;
 var22 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var22->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var22, var_listnode9) /* init_atopclassdef on <var22:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var22);
 var_pclassdefnode7 = var22;
 var_pclassdefnode10 = var_nodearraylist5;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -8697,8 +8063,9 @@ var23 = var_pclassdefnode10->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4031);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3781);
+show_backtrace(1);
 }
 var26 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode6) /* concat on <self:ReduceAction59>*/;
 var_listnode11 = var26;
@@ -8724,7 +8091,6 @@ if (var30){
 }
 var31 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var31->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var31, var_pmoduledeclnode2, var_listnode4, var_listnode5, var_listnode11) /* init_amodule on <var31:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var31);
 var_pmodulenode1 = var31;
 var_node_list = var_pmodulenode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction59> */
@@ -8801,15 +8167,12 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
 var_listnode3 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode5 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode11 = var7;
 var_listnode4 = var_nodearraylist1;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -8825,8 +8188,9 @@ var8 = var_listnode4->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4062);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3812);
+show_backtrace(1);
 }
 var9 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction60>*/;
 var_listnode5 = var9;
@@ -8844,12 +8208,12 @@ var10 = var_listnode6->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4065);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3815);
+show_backtrace(1);
 }
 var13 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var13->class->vft[COLOR_array__Array__init]))(var13) /* init on <var13:Array[Object]>*/;
-CHECK_NEW_array__Array(var13);
 var_listnode9 = var13;
 var_listnode8 = var_nodearraylist3;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -8865,14 +8229,14 @@ var14 = var_listnode8->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4068);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3818);
+show_backtrace(1);
 }
 var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction60>*/;
 var_listnode9 = var17;
 var18 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var18->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var18, var_listnode9) /* init_atopclassdef on <var18:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var18);
 var_pclassdefnode7 = var18;
 var_pclassdefnode10 = var_nodearraylist4;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -8888,8 +8252,9 @@ var19 = var_pclassdefnode10->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4074);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3824);
+show_backtrace(1);
 }
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode6) /* concat on <self:ReduceAction60>*/;
 var_listnode11 = var22;
@@ -8916,7 +8281,6 @@ if (var26){
 var27 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var27->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var27, var28, var_listnode3, var_listnode5, var_listnode11) /* init_amodule on <var27:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var27);
 var_pmodulenode1 = var27;
 var_node_list = var_pmodulenode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction60> */
@@ -9000,15 +8364,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode3 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode5 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode11 = var8;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -9024,8 +8385,9 @@ var9 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4106);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3856);
+show_backtrace(1);
 }
 var_listnode4 = var_nodearraylist2;
 /* <var_listnode4:nullable Object> isa Array[Object] */
@@ -9041,8 +8403,9 @@ var10 = var_listnode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4108);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3858);
+show_backtrace(1);
 }
 var13 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode5, var_listnode4) /* concat on <self:ReduceAction61>*/;
 var_listnode5 = var13;
@@ -9060,12 +8423,12 @@ var14 = var_listnode6->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4111);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3861);
+show_backtrace(1);
 }
 var17 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var17->class->vft[COLOR_array__Array__init]))(var17) /* init on <var17:Array[Object]>*/;
-CHECK_NEW_array__Array(var17);
 var_listnode9 = var17;
 var_listnode8 = var_nodearraylist4;
 /* <var_listnode8:nullable Object> isa Array[Object] */
@@ -9081,14 +8444,14 @@ var18 = var_listnode8->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4114);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3864);
+show_backtrace(1);
 }
 var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode9, var_listnode8) /* concat on <self:ReduceAction61>*/;
 var_listnode9 = var21;
 var22 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var22->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var22, var_listnode9) /* init_atopclassdef on <var22:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var22);
 var_pclassdefnode7 = var22;
 var_pclassdefnode10 = var_nodearraylist5;
 /* <var_pclassdefnode10:nullable Object> isa nullable AClassdef */
@@ -9104,8 +8467,9 @@ var23 = var_pclassdefnode10->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4120);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3870);
+show_backtrace(1);
 }
 var26 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode11, var_listnode6) /* concat on <self:ReduceAction61>*/;
 var_listnode11 = var26;
@@ -9131,7 +8495,6 @@ if (var30){
 }
 var31 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var31->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var31, var_pmoduledeclnode2, var_listnode3, var_listnode5, var_listnode11) /* init_amodule on <var31:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var31);
 var_pmodulenode1 = var31;
 var_node_list = var_pmodulenode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction61> */
@@ -9217,15 +8580,12 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var6->class->vft[COLOR_array__Array__init]))(var6) /* init on <var6:Array[Object]>*/;
-CHECK_NEW_array__Array(var6);
 var_listnode4 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode6 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode12 = var8;
 var_listnode3 = var_nodearraylist1;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -9241,8 +8601,9 @@ var9 = var_listnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4152);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3902);
+show_backtrace(1);
 }
 var10 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction62>*/;
 var_listnode4 = var10;
@@ -9260,8 +8621,9 @@ var11 = var_listnode5->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4155);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3905);
+show_backtrace(1);
 }
 var14 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction62>*/;
 var_listnode6 = var14;
@@ -9279,12 +8641,12 @@ var15 = var_listnode7->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4158);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3908);
+show_backtrace(1);
 }
 var18 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var18->class->vft[COLOR_array__Array__init]))(var18) /* init on <var18:Array[Object]>*/;
-CHECK_NEW_array__Array(var18);
 var_listnode10 = var18;
 var_listnode9 = var_nodearraylist4;
 /* <var_listnode9:nullable Object> isa Array[Object] */
@@ -9300,14 +8662,14 @@ var19 = var_listnode9->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4161);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3911);
+show_backtrace(1);
 }
 var22 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode9) /* concat on <self:ReduceAction62>*/;
 var_listnode10 = var22;
 var23 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var23->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var23, var_listnode10) /* init_atopclassdef on <var23:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var23);
 var_pclassdefnode8 = var23;
 var_pclassdefnode11 = var_nodearraylist5;
 /* <var_pclassdefnode11:nullable Object> isa nullable AClassdef */
@@ -9323,8 +8685,9 @@ var24 = var_pclassdefnode11->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4167);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3917);
+show_backtrace(1);
 }
 var27 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode7) /* concat on <self:ReduceAction62>*/;
 var_listnode12 = var27;
@@ -9351,7 +8714,6 @@ if (var31){
 var32 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 var33 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var32->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var32, var33, var_listnode4, var_listnode6, var_listnode12) /* init_amodule on <var32:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var32);
 var_pmodulenode1 = var32;
 var_node_list = var_pmodulenode1;
 var34 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction62> */
@@ -9444,15 +8806,12 @@ var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var6;
 var7 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var7->class->vft[COLOR_array__Array__init]))(var7) /* init on <var7:Array[Object]>*/;
-CHECK_NEW_array__Array(var7);
 var_listnode4 = var7;
 var8 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
-CHECK_NEW_array__Array(var8);
 var_listnode6 = var8;
 var9 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var9->class->vft[COLOR_array__Array__init]))(var9) /* init on <var9:Array[Object]>*/;
-CHECK_NEW_array__Array(var9);
 var_listnode12 = var9;
 var_pmoduledeclnode2 = var_nodearraylist1;
 /* <var_pmoduledeclnode2:nullable Object> isa nullable AModuledecl */
@@ -9468,8 +8827,9 @@ var10 = var_pmoduledeclnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4200);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3950);
+show_backtrace(1);
 }
 var_listnode3 = var_nodearraylist2;
 /* <var_listnode3:nullable Object> isa Array[Object] */
@@ -9485,8 +8845,9 @@ var11 = var_listnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4202);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3952);
+show_backtrace(1);
 }
 var14 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction63>*/;
 var_listnode4 = var14;
@@ -9504,8 +8865,9 @@ var15 = var_listnode5->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4205);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3955);
+show_backtrace(1);
 }
 var18 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode6, var_listnode5) /* concat on <self:ReduceAction63>*/;
 var_listnode6 = var18;
@@ -9523,12 +8885,12 @@ var19 = var_listnode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4208);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3958);
+show_backtrace(1);
 }
 var22 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var22->class->vft[COLOR_array__Array__init]))(var22) /* init on <var22:Array[Object]>*/;
-CHECK_NEW_array__Array(var22);
 var_listnode10 = var22;
 var_listnode9 = var_nodearraylist5;
 /* <var_listnode9:nullable Object> isa Array[Object] */
@@ -9544,14 +8906,14 @@ var23 = var_listnode9->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4211);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3961);
+show_backtrace(1);
 }
 var26 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode10, var_listnode9) /* concat on <self:ReduceAction63>*/;
 var_listnode10 = var26;
 var27 = NEW_parser_nodes__ATopClassdef(&type_parser_nodes__ATopClassdef);
 ((void (*)(val*, val*))(var27->class->vft[COLOR_parser_prod__ATopClassdef__init_atopclassdef]))(var27, var_listnode10) /* init_atopclassdef on <var27:ATopClassdef>*/;
-CHECK_NEW_parser_nodes__ATopClassdef(var27);
 var_pclassdefnode8 = var27;
 var_pclassdefnode11 = var_nodearraylist6;
 /* <var_pclassdefnode11:nullable Object> isa nullable AClassdef */
@@ -9567,8 +8929,9 @@ var28 = var_pclassdefnode11->type->type_table[cltype29] == idtype30;
 }
 }
 if (!var28) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4217);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3967);
+show_backtrace(1);
 }
 var31 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode7) /* concat on <self:ReduceAction63>*/;
 var_listnode12 = var31;
@@ -9594,7 +8957,6 @@ if (var35){
 }
 var36 = NEW_parser_nodes__AModule(&type_parser_nodes__AModule);
 ((void (*)(val*, val*, val*, val*, val*))(var36->class->vft[COLOR_parser_prod__AModule__init_amodule]))(var36, var_pmoduledeclnode2, var_listnode4, var_listnode6, var_listnode12) /* init_amodule on <var36:AModule>*/;
-CHECK_NEW_parser_nodes__AModule(var36);
 var_pmodulenode1 = var36;
 var_node_list = var_pmodulenode1;
 var37 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction63> */
@@ -9666,8 +9028,9 @@ var6 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4246);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3996);
+show_backtrace(1);
 }
 var_tkwmodulenode3 = var_nodearraylist2;
 /* <var_tkwmodulenode3:nullable Object> isa nullable TKwmodule */
@@ -9683,8 +9046,9 @@ var7 = var_tkwmodulenode3->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4248);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 3998);
+show_backtrace(1);
 }
 var_pmodulenamenode4 = var_nodearraylist4;
 /* <var_pmodulenamenode4:nullable Object> isa nullable AModuleName */
@@ -9700,13 +9064,13 @@ var10 = var_pmodulenamenode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4250);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4000);
+show_backtrace(1);
 }
 var13 = NEW_parser_nodes__AModuledecl(&type_parser_nodes__AModuledecl);
 var14 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AModuledecl__init_amoduledecl]))(var13, var_pdocnode2, var_tkwmodulenode3, var_pmodulenamenode4, var14) /* init_amoduledecl on <var13:AModuledecl>*/;
-CHECK_NEW_parser_nodes__AModuledecl(var13);
 var_pmoduledeclnode1 = var13;
 var_node_list = var_pmoduledeclnode1;
 var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction64> */
@@ -9785,8 +9149,9 @@ var7 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4273);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4023);
+show_backtrace(1);
 }
 var_tkwmodulenode3 = var_nodearraylist2;
 /* <var_tkwmodulenode3:nullable Object> isa nullable TKwmodule */
@@ -9802,8 +9167,9 @@ var8 = var_tkwmodulenode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4275);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4025);
+show_backtrace(1);
 }
 var_pmodulenamenode4 = var_nodearraylist4;
 /* <var_pmodulenamenode4:nullable Object> isa nullable AModuleName */
@@ -9819,8 +9185,9 @@ var11 = var_pmodulenamenode4->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4277);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4027);
+show_backtrace(1);
 }
 var_pannotationsnode5 = var_nodearraylist5;
 /* <var_pannotationsnode5:nullable Object> isa nullable AAnnotations */
@@ -9836,12 +9203,12 @@ var14 = var_pannotationsnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4279);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4029);
+show_backtrace(1);
 }
 var17 = NEW_parser_nodes__AModuledecl(&type_parser_nodes__AModuledecl);
 ((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AModuledecl__init_amoduledecl]))(var17, var_pdocnode2, var_tkwmodulenode3, var_pmodulenamenode4, var_pannotationsnode5) /* init_amoduledecl on <var17:AModuledecl>*/;
-CHECK_NEW_parser_nodes__AModuledecl(var17);
 var_pmoduledeclnode1 = var17;
 var_node_list = var_pmoduledeclnode1;
 var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction65> */
@@ -9917,8 +9284,9 @@ var7 = var_pvisibilitynode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4302);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4052);
+show_backtrace(1);
 }
 var_tkwimportnode3 = var_nodearraylist3;
 /* <var_tkwimportnode3:nullable Object> isa nullable TKwimport */
@@ -9934,8 +9302,9 @@ var8 = var_tkwimportnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4304);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4054);
+show_backtrace(1);
 }
 var_pmodulenamenode4 = var_nodearraylist5;
 /* <var_pmodulenamenode4:nullable Object> isa nullable AModuleName */
@@ -9951,13 +9320,13 @@ var11 = var_pmodulenamenode4->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 4306);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4056);
+show_backtrace(1);
 }
 var14 = NEW_parser_nodes__AStdImport(&type_parser_nodes__AStdImport);
 var15 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AStdImport__init_astdimport]))(var14, var_pvisibilitynode2, var_tkwimportnode3, var_pmodulenamenode4, var15) /* init_astdimport on <var14:AStdImport>*/;
-CHECK_NEW_parser_nodes__AStdImport(var14);
 var_pimportnode1 = var14;
 var_node_list = var_pimportnode1;
 var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction66> */
@@ -9970,3 +9339,600 @@ void VIRTUAL_parser__ReduceAction66__action(val* self, val* p0) {
 parser__ReduceAction66__action(self, p0);
 RET_LABEL:;
 }
+/* method parser#ReduceAction67#action for (self: ReduceAction67, Parser) */
+void parser__ReduceAction67__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pvisibilitynode2 /* var pvisibilitynode2: nullable Object */;
+short int var8 /* : Bool */;
+int cltype;
+int idtype;
+val* var_tkwimportnode3 /* var tkwimportnode3: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_pmodulenamenode4 /* var pmodulenamenode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_pannotationsnode5 /* var pannotationsnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var18 /* : AStdImport */;
+val* var_pimportnode1 /* var pimportnode1: nullable AStdImport */;
+long var19 /* : Int */;
+long var20 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_pvisibilitynode2 = var_nodearraylist2;
+/* <var_pvisibilitynode2:nullable Object> isa nullable AVisibility */
+cltype = type_nullable_parser_nodes__AVisibility.color;
+idtype = type_nullable_parser_nodes__AVisibility.id;
+if(var_pvisibilitynode2 == NULL) {
+var8 = 1;
+} else {
+if(cltype >= var_pvisibilitynode2->type->table_size) {
+var8 = 0;
+} else {
+var8 = var_pvisibilitynode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var8) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4080);
+show_backtrace(1);
+}
+var_tkwimportnode3 = var_nodearraylist3;
+/* <var_tkwimportnode3:nullable Object> isa nullable TKwimport */
+cltype10 = type_nullable_parser_nodes__TKwimport.color;
+idtype11 = type_nullable_parser_nodes__TKwimport.id;
+if(var_tkwimportnode3 == NULL) {
+var9 = 1;
+} else {
+if(cltype10 >= var_tkwimportnode3->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_tkwimportnode3->type->type_table[cltype10] == idtype11;
+}
+}
+if (!var9) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4082);
+show_backtrace(1);
+}
+var_pmodulenamenode4 = var_nodearraylist5;
+/* <var_pmodulenamenode4:nullable Object> isa nullable AModuleName */
+cltype13 = type_nullable_parser_nodes__AModuleName.color;
+idtype14 = type_nullable_parser_nodes__AModuleName.id;
+if(var_pmodulenamenode4 == NULL) {
+var12 = 1;
+} else {
+if(cltype13 >= var_pmodulenamenode4->type->table_size) {
+var12 = 0;
+} else {
+var12 = var_pmodulenamenode4->type->type_table[cltype13] == idtype14;
+}
+}
+if (!var12) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4084);
+show_backtrace(1);
+}
+var_pannotationsnode5 = var_nodearraylist6;
+/* <var_pannotationsnode5:nullable Object> isa nullable AAnnotations */
+cltype16 = type_nullable_parser_nodes__AAnnotations.color;
+idtype17 = type_nullable_parser_nodes__AAnnotations.id;
+if(var_pannotationsnode5 == NULL) {
+var15 = 1;
+} else {
+if(cltype16 >= var_pannotationsnode5->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_pannotationsnode5->type->type_table[cltype16] == idtype17;
+}
+}
+if (!var15) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4086);
+show_backtrace(1);
+}
+var18 = NEW_parser_nodes__AStdImport(&type_parser_nodes__AStdImport);
+((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AStdImport__init_astdimport]))(var18, var_pvisibilitynode2, var_tkwimportnode3, var_pmodulenamenode4, var_pannotationsnode5) /* init_astdimport on <var18:AStdImport>*/;
+var_pimportnode1 = var18;
+var_node_list = var_pimportnode1;
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction67> */
+var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction67#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction67__action(val* self, val* p0) {
+parser__ReduceAction67__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction68#action for (self: ReduceAction68, Parser) */
+void parser__ReduceAction68__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pvisibilitynode2 /* var pvisibilitynode2: nullable Object */;
+short int var7 /* : Bool */;
+int cltype;
+int idtype;
+val* var_tkwimportnode3 /* var tkwimportnode3: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_tkwendnode4 /* var tkwendnode4: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var14 /* : ANoImport */;
+val* var_pimportnode1 /* var pimportnode1: nullable ANoImport */;
+long var15 /* : Int */;
+long var16 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
+var_pvisibilitynode2 = var_nodearraylist2;
+/* <var_pvisibilitynode2:nullable Object> isa nullable AVisibility */
+cltype = type_nullable_parser_nodes__AVisibility.color;
+idtype = type_nullable_parser_nodes__AVisibility.id;
+if(var_pvisibilitynode2 == NULL) {
+var7 = 1;
+} else {
+if(cltype >= var_pvisibilitynode2->type->table_size) {
+var7 = 0;
+} else {
+var7 = var_pvisibilitynode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var7) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4109);
+show_backtrace(1);
+}
+var_tkwimportnode3 = var_nodearraylist3;
+/* <var_tkwimportnode3:nullable Object> isa nullable TKwimport */
+cltype9 = type_nullable_parser_nodes__TKwimport.color;
+idtype10 = type_nullable_parser_nodes__TKwimport.id;
+if(var_tkwimportnode3 == NULL) {
+var8 = 1;
+} else {
+if(cltype9 >= var_tkwimportnode3->type->table_size) {
+var8 = 0;
+} else {
+var8 = var_tkwimportnode3->type->type_table[cltype9] == idtype10;
+}
+}
+if (!var8) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4111);
+show_backtrace(1);
+}
+var_tkwendnode4 = var_nodearraylist5;
+/* <var_tkwendnode4:nullable Object> isa nullable TKwend */
+cltype12 = type_nullable_parser_nodes__TKwend.color;
+idtype13 = type_nullable_parser_nodes__TKwend.id;
+if(var_tkwendnode4 == NULL) {
+var11 = 1;
+} else {
+if(cltype12 >= var_tkwendnode4->type->table_size) {
+var11 = 0;
+} else {
+var11 = var_tkwendnode4->type->type_table[cltype12] == idtype13;
+}
+}
+if (!var11) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4113);
+show_backtrace(1);
+}
+var14 = NEW_parser_nodes__ANoImport(&type_parser_nodes__ANoImport);
+((void (*)(val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__ANoImport__init_anoimport]))(var14, var_pvisibilitynode2, var_tkwimportnode3, var_tkwendnode4) /* init_anoimport on <var14:ANoImport>*/;
+var_pimportnode1 = var14;
+var_node_list = var_pimportnode1;
+var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction68> */
+var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction68#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction68__action(val* self, val* p0) {
+parser__ReduceAction68__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction69#action for (self: ReduceAction69, Parser) */
+void parser__ReduceAction69__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var2 /* : Array[Object] */;
+val* var_listnode3 /* var listnode3: Array[Object] */;
+val* var_ppropdefnode2 /* var ppropdefnode2: nullable Object */;
+short int var3 /* : Bool */;
+int cltype;
+int idtype;
+val* var4 /* : null */;
+short int var5 /* : Bool */;
+val* var6 /* : AMainClassdef */;
+val* var_pclassdefnode1 /* var pclassdefnode1: nullable AMainClassdef */;
+long var7 /* : Int */;
+long var8 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var1;
+var2 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var2->class->vft[COLOR_array__Array__init]))(var2) /* init on <var2:Array[Object]>*/;
+var_listnode3 = var2;
+var_ppropdefnode2 = var_nodearraylist1;
+/* <var_ppropdefnode2:nullable Object> isa nullable APropdef */
+cltype = type_nullable_parser_nodes__APropdef.color;
+idtype = type_nullable_parser_nodes__APropdef.id;
+if(var_ppropdefnode2 == NULL) {
+var3 = 1;
+} else {
+if(cltype >= var_ppropdefnode2->type->table_size) {
+var3 = 0;
+} else {
+var3 = var_ppropdefnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var3) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4131);
+show_backtrace(1);
+}
+var4 = NULL;
+if (var_ppropdefnode2 == NULL) {
+var5 = 0; /* is null */
+} else {
+var5 = 1; /* arg is null and recv is not */
+}
+if (var5){
+((void (*)(val*, val*))(var_listnode3->class->vft[COLOR_abstract_collection__SimpleCollection__add]))(var_listnode3, var_ppropdefnode2) /* add on <var_listnode3:Array[Object]>*/;
+} else {
+}
+var6 = NEW_parser_nodes__AMainClassdef(&type_parser_nodes__AMainClassdef);
+((void (*)(val*, val*))(var6->class->vft[COLOR_parser_prod__AMainClassdef__init_amainclassdef]))(var6, var_listnode3) /* init_amainclassdef on <var6:AMainClassdef>*/;
+var_pclassdefnode1 = var6;
+var_node_list = var_pclassdefnode1;
+var7 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction69> */
+var8 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var7) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var8, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction69#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction69__action(val* self, val* p0) {
+parser__ReduceAction69__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction70#action for (self: ReduceAction70, Parser) */
+void parser__ReduceAction70__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var2 /* : null */;
+long var3 /* : Int */;
+long var4 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var1;
+var2 = NULL;
+var_node_list = var2;
+var3 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction70> */
+var4 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var3) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var4, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction70#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction70__action(val* self, val* p0) {
+parser__ReduceAction70__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction71#action for (self: ReduceAction71, Parser) */
+void parser__ReduceAction71__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var3 /* : Bool */;
+int cltype;
+int idtype;
+val* var4 /* : AMainMethPropdef */;
+val* var5 /* : null */;
+val* var_ppropdefnode1 /* var ppropdefnode1: nullable AMainMethPropdef */;
+long var6 /* : Int */;
+long var7 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var2;
+var_pexprnode3 = var_nodearraylist2;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var3 = 1;
+} else {
+if(cltype >= var_pexprnode3->type->table_size) {
+var3 = 0;
+} else {
+var3 = var_pexprnode3->type->type_table[cltype] == idtype;
+}
+}
+if (!var3) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4160);
+show_backtrace(1);
+}
+var4 = NEW_parser_nodes__AMainMethPropdef(&type_parser_nodes__AMainMethPropdef);
+var5 = NULL;
+((void (*)(val*, val*, val*))(var4->class->vft[COLOR_parser_prod__AMainMethPropdef__init_amainmethpropdef]))(var4, var5, var_pexprnode3) /* init_amainmethpropdef on <var4:AMainMethPropdef>*/;
+var_ppropdefnode1 = var4;
+var_node_list = var_ppropdefnode1;
+var6 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction71> */
+var7 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var6) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var7, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction71#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction71__action(val* self, val* p0) {
+parser__ReduceAction71__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction73#action for (self: ReduceAction73, Parser) */
+void parser__ReduceAction73__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var8 /* : Array[Object] */;
+val* var_listnode7 /* var listnode7: Array[Object] */;
+val* var9 /* : Array[Object] */;
+val* var_listnode10 /* var listnode10: Array[Object] */;
+val* var10 /* : Array[Object] */;
+val* var_listnode11 /* var listnode11: Array[Object] */;
+val* var_pdocnode2 /* var pdocnode2: nullable Object */;
+short int var11 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pvisibilitynode4 /* var pvisibilitynode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_pclasskindnode5 /* var pclasskindnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var_tclassidnode6 /* var tclassidnode6: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var_tkwendnode12 /* var tkwendnode12: nullable Object */;
+short int var21 /* : Bool */;
+int cltype22;
+int idtype23;
+val* var24 /* : AStdClassdef */;
+val* var25 /* : null */;
+val* var26 /* : null */;
+val* var27 /* : null */;
+val* var_pclassdefnode1 /* var pclassdefnode1: nullable AStdClassdef */;
+long var28 /* : Int */;
+long var29 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var8 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var8->class->vft[COLOR_array__Array__init]))(var8) /* init on <var8:Array[Object]>*/;
+var_listnode7 = var8;
+var9 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var9->class->vft[COLOR_array__Array__init]))(var9) /* init on <var9:Array[Object]>*/;
+var_listnode10 = var9;
+var10 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var10->class->vft[COLOR_array__Array__init]))(var10) /* init on <var10:Array[Object]>*/;
+var_listnode11 = var10;
+var_pdocnode2 = var_nodearraylist1;
+/* <var_pdocnode2:nullable Object> isa nullable ADoc */
+cltype = type_nullable_parser_nodes__ADoc.color;
+idtype = type_nullable_parser_nodes__ADoc.id;
+if(var_pdocnode2 == NULL) {
+var11 = 1;
+} else {
+if(cltype >= var_pdocnode2->type->table_size) {
+var11 = 0;
+} else {
+var11 = var_pdocnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var11) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4185);
+show_backtrace(1);
+}
+var_pvisibilitynode4 = var_nodearraylist2;
+/* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
+cltype13 = type_nullable_parser_nodes__AVisibility.color;
+idtype14 = type_nullable_parser_nodes__AVisibility.id;
+if(var_pvisibilitynode4 == NULL) {
+var12 = 1;
+} else {
+if(cltype13 >= var_pvisibilitynode4->type->table_size) {
+var12 = 0;
+} else {
+var12 = var_pvisibilitynode4->type->type_table[cltype13] == idtype14;
+}
+}
+if (!var12) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4187);
+show_backtrace(1);
+}
+var_pclasskindnode5 = var_nodearraylist3;
+/* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
+cltype16 = type_nullable_parser_nodes__AClasskind.color;
+idtype17 = type_nullable_parser_nodes__AClasskind.id;
+if(var_pclasskindnode5 == NULL) {
+var15 = 1;
+} else {
+if(cltype16 >= var_pclasskindnode5->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_pclasskindnode5->type->type_table[cltype16] == idtype17;
+}
+}
+if (!var15) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4189);
+show_backtrace(1);
+}
+var_tclassidnode6 = var_nodearraylist5;
+/* <var_tclassidnode6:nullable Object> isa nullable TClassid */
+cltype19 = type_nullable_parser_nodes__TClassid.color;
+idtype20 = type_nullable_parser_nodes__TClassid.id;
+if(var_tclassidnode6 == NULL) {
+var18 = 1;
+} else {
+if(cltype19 >= var_tclassidnode6->type->table_size) {
+var18 = 0;
+} else {
+var18 = var_tclassidnode6->type->type_table[cltype19] == idtype20;
+}
+}
+if (!var18) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4191);
+show_backtrace(1);
+}
+var_tkwendnode12 = var_nodearraylist7;
+/* <var_tkwendnode12:nullable Object> isa nullable TKwend */
+cltype22 = type_nullable_parser_nodes__TKwend.color;
+idtype23 = type_nullable_parser_nodes__TKwend.id;
+if(var_tkwendnode12 == NULL) {
+var21 = 1;
+} else {
+if(cltype22 >= var_tkwendnode12->type->table_size) {
+var21 = 0;
+} else {
+var21 = var_tkwendnode12->type->type_table[cltype22] == idtype23;
+}
+}
+if (!var21) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 4193);
+show_backtrace(1);
+}
+var24 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
+var25 = NULL;
+var26 = NULL;
+var27 = NULL;
+((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var24->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var24, var_pdocnode2, var25, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var26, var27, var_listnode10, var_listnode11, var_tkwendnode12) /* init_astdclassdef on <var24:AStdClassdef>*/;
+var_pclassdefnode1 = var24;
+var_node_list = var_pclassdefnode1;
+var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction73> */
+var29 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var28) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var29, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction73#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction73__action(val* self, val* p0) {
+parser__ReduceAction73__action(self, p0);
+RET_LABEL:;
+}