examples: intro a README file to emscripten examples

[nit.git] / c_src / parser.sep.9.c

diff --git a/c_src/parser.sep.9.c b/c_src/parser.sep.9.c
index 28ed7bc..8c2e5b3 100644 (file)
--- a/c_src/parser.sep.9.c
+++ b/c_src/parser.sep.9.c
@@ -117,15 +117,12 @@ var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode7 = 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_listnode16 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode18 = var15;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -141,8 +138,9 @@ var16 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14722);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14474);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -158,8 +156,9 @@ var17 = var_tkwredefnode3->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14724);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14476);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -175,8 +174,9 @@ var20 = var_pvisibilitynode4->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14726);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14478);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -192,8 +192,9 @@ var23 = var_pclasskindnode5->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14728);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14480);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist6;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -209,12 +210,12 @@ var26 = var_tclassidnode6->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14730);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14482);
+show_backtrace(1);
 }
 var29 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var29->class->vft[COLOR_array__Array__init]))(var29) /* init on <var29:Array[Object]>*/;
-CHECK_NEW_array__Array(var29);
 var_listnode12 = var29;
 var_listnode11 = var_nodearraylist7;
 /* <var_listnode11:nullable Object> isa Array[Object] */
@@ -230,8 +231,9 @@ var30 = var_listnode11->type->type_table[cltype31] == idtype32;
 }
 }
 if (!var30) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14733);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14485);
+show_backtrace(1);
 }
 var33 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode11) /* concat on <self:ReduceAction314>*/;
 var_listnode12 = var33;
@@ -240,7 +242,6 @@ var35 = NULL;
 var36 = NULL;
 var37 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var34->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var34, var35, var36, var_listnode12, var37) /* init_aannotations on <var34:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var34);
 var_pannotationsnode8 = var34;
 var_pexterncodeblocknode14 = var_nodearraylist8;
 /* <var_pexterncodeblocknode14:nullable Object> isa nullable AExternCodeBlock */
@@ -256,8 +257,9 @@ var38 = var_pexterncodeblocknode14->type->type_table[cltype39] == idtype40;
 }
 }
 if (!var38) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14742);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14494);
+show_backtrace(1);
 }
 var_listnode15 = var_nodearraylist9;
 /* <var_listnode15:nullable Object> isa Array[Object] */
@@ -273,8 +275,9 @@ var41 = var_listnode15->type->type_table[cltype42] == idtype43;
 }
 }
 if (!var41) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14744);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14496);
+show_backtrace(1);
 }
 var44 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode16, var_listnode15) /* concat on <self:ReduceAction314>*/;
 var_listnode16 = var44;
@@ -292,8 +295,9 @@ var45 = var_listnode17->type->type_table[cltype46] == idtype47;
 }
 }
 if (!var45) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14747);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14499);
+show_backtrace(1);
 }
 var48 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode18, var_listnode17) /* concat on <self:ReduceAction314>*/;
 var_listnode18 = var48;
@@ -311,12 +315,12 @@ var49 = var_tkwendnode19->type->type_table[cltype50] == idtype51;
 }
 }
 if (!var49) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14750);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14502);
+show_backtrace(1);
 }
 var52 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var52->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var52, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var_pannotationsnode8, var_pexterncodeblocknode14, var_listnode16, var_listnode18, var_tkwendnode19) /* init_astdclassdef on <var52:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var52);
 var_pclassdefnode1 = var52;
 var_node_list = var_pclassdefnode1;
 var53 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction314> */
@@ -444,15 +448,12 @@ var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode7 = 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_listnode16 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode18 = var15;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -468,8 +469,9 @@ var16 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14789);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14541);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -485,8 +487,9 @@ var17 = var_pvisibilitynode4->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14791);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14543);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist3;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -502,8 +505,9 @@ var20 = var_pclasskindnode5->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14793);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14545);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist6;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -519,12 +523,12 @@ var23 = var_tclassidnode6->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14795);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14547);
+show_backtrace(1);
 }
 var26 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var26->class->vft[COLOR_array__Array__init]))(var26) /* init on <var26:Array[Object]>*/;
-CHECK_NEW_array__Array(var26);
 var_listnode12 = var26;
 var_listnode11 = var_nodearraylist7;
 /* <var_listnode11:nullable Object> isa Array[Object] */
@@ -540,8 +544,9 @@ var27 = var_listnode11->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14798);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14550);
+show_backtrace(1);
 }
 var30 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode11) /* concat on <self:ReduceAction315>*/;
 var_listnode12 = var30;
@@ -550,7 +555,6 @@ var32 = NULL;
 var33 = NULL;
 var34 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var31->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var31, var32, var33, var_listnode12, var34) /* init_aannotations on <var31:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var31);
 var_pannotationsnode8 = var31;
 var_pexterncodeblocknode14 = var_nodearraylist8;
 /* <var_pexterncodeblocknode14:nullable Object> isa nullable AExternCodeBlock */
@@ -566,8 +570,9 @@ var35 = var_pexterncodeblocknode14->type->type_table[cltype36] == idtype37;
 }
 }
 if (!var35) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14807);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14559);
+show_backtrace(1);
 }
 var_listnode15 = var_nodearraylist9;
 /* <var_listnode15:nullable Object> isa Array[Object] */
@@ -583,8 +588,9 @@ var38 = var_listnode15->type->type_table[cltype39] == idtype40;
 }
 }
 if (!var38) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14809);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14561);
+show_backtrace(1);
 }
 var41 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode16, var_listnode15) /* concat on <self:ReduceAction315>*/;
 var_listnode16 = var41;
@@ -602,8 +608,9 @@ var42 = var_listnode17->type->type_table[cltype43] == idtype44;
 }
 }
 if (!var42) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14812);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14564);
+show_backtrace(1);
 }
 var45 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode18, var_listnode17) /* concat on <self:ReduceAction315>*/;
 var_listnode18 = var45;
@@ -621,13 +628,13 @@ var46 = var_tkwendnode19->type->type_table[cltype47] == idtype48;
 }
 }
 if (!var46) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14815);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14567);
+show_backtrace(1);
 }
 var49 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 var50 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var49->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var49, var_pdocnode2, var50, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var_pannotationsnode8, var_pexterncodeblocknode14, var_listnode16, var_listnode18, var_tkwendnode19) /* init_astdclassdef on <var49:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var49);
 var_pclassdefnode1 = var49;
 var_node_list = var_pclassdefnode1;
 var51 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction315> */
@@ -759,15 +766,12 @@ var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode7 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode16 = var15;
 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_listnode18 = var16;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -783,8 +787,9 @@ var17 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14855);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14607);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -800,8 +805,9 @@ var18 = var_pvisibilitynode4->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14857);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14609);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist3;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -817,8 +823,9 @@ var21 = var_pclasskindnode5->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14859);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14611);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist7;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -834,12 +841,12 @@ var24 = var_tclassidnode6->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14861);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14613);
+show_backtrace(1);
 }
 var27 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var27->class->vft[COLOR_array__Array__init]))(var27) /* init on <var27:Array[Object]>*/;
-CHECK_NEW_array__Array(var27);
 var_listnode12 = var27;
 var_listnode11 = var_nodearraylist8;
 /* <var_listnode11:nullable Object> isa Array[Object] */
@@ -855,8 +862,9 @@ var28 = var_listnode11->type->type_table[cltype29] == idtype30;
 }
 }
 if (!var28) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14864);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14616);
+show_backtrace(1);
 }
 var31 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode11) /* concat on <self:ReduceAction316>*/;
 var_listnode12 = var31;
@@ -865,7 +873,6 @@ var33 = NULL;
 var34 = NULL;
 var35 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var32->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var32, var33, var34, var_listnode12, var35) /* init_aannotations on <var32:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var32);
 var_pannotationsnode8 = var32;
 var_pexterncodeblocknode14 = var_nodearraylist9;
 /* <var_pexterncodeblocknode14:nullable Object> isa nullable AExternCodeBlock */
@@ -881,8 +888,9 @@ var36 = var_pexterncodeblocknode14->type->type_table[cltype37] == idtype38;
 }
 }
 if (!var36) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14873);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14625);
+show_backtrace(1);
 }
 var_listnode15 = var_nodearraylist10;
 /* <var_listnode15:nullable Object> isa Array[Object] */
@@ -898,8 +906,9 @@ var39 = var_listnode15->type->type_table[cltype40] == idtype41;
 }
 }
 if (!var39) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14875);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14627);
+show_backtrace(1);
 }
 var42 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode16, var_listnode15) /* concat on <self:ReduceAction316>*/;
 var_listnode16 = var42;
@@ -917,8 +926,9 @@ var43 = var_listnode17->type->type_table[cltype44] == idtype45;
 }
 }
 if (!var43) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14878);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14630);
+show_backtrace(1);
 }
 var46 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode18, var_listnode17) /* concat on <self:ReduceAction316>*/;
 var_listnode18 = var46;
@@ -936,13 +946,13 @@ var47 = var_tkwendnode19->type->type_table[cltype48] == idtype49;
 }
 }
 if (!var47) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14881);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14633);
+show_backtrace(1);
 }
 var50 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 var51 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var50->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var50, var_pdocnode2, var51, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var_pannotationsnode8, var_pexterncodeblocknode14, var_listnode16, var_listnode18, var_tkwendnode19) /* init_astdclassdef on <var50:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var50);
 var_pclassdefnode1 = var50;
 var_node_list = var_pclassdefnode1;
 var52 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction316> */
@@ -1077,15 +1087,12 @@ var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode7 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode16 = var15;
 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_listnode18 = var16;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -1101,8 +1108,9 @@ var17 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14921);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14673);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -1118,8 +1126,9 @@ var18 = var_tkwredefnode3->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14923);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14675);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -1135,8 +1144,9 @@ var21 = var_pvisibilitynode4->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14925);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14677);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -1152,8 +1162,9 @@ var24 = var_pclasskindnode5->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14927);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14679);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist7;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -1169,12 +1180,12 @@ var27 = var_tclassidnode6->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14929);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14681);
+show_backtrace(1);
 }
 var30 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var30->class->vft[COLOR_array__Array__init]))(var30) /* init on <var30:Array[Object]>*/;
-CHECK_NEW_array__Array(var30);
 var_listnode12 = var30;
 var_listnode11 = var_nodearraylist8;
 /* <var_listnode11:nullable Object> isa Array[Object] */
@@ -1190,8 +1201,9 @@ var31 = var_listnode11->type->type_table[cltype32] == idtype33;
 }
 }
 if (!var31) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14932);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14684);
+show_backtrace(1);
 }
 var34 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode11) /* concat on <self:ReduceAction318>*/;
 var_listnode12 = var34;
@@ -1200,7 +1212,6 @@ var36 = NULL;
 var37 = NULL;
 var38 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var35->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var35, var36, var37, var_listnode12, var38) /* init_aannotations on <var35:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var35);
 var_pannotationsnode8 = var35;
 var_pexterncodeblocknode14 = var_nodearraylist9;
 /* <var_pexterncodeblocknode14:nullable Object> isa nullable AExternCodeBlock */
@@ -1216,8 +1227,9 @@ var39 = var_pexterncodeblocknode14->type->type_table[cltype40] == idtype41;
 }
 }
 if (!var39) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14941);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14693);
+show_backtrace(1);
 }
 var_listnode15 = var_nodearraylist10;
 /* <var_listnode15:nullable Object> isa Array[Object] */
@@ -1233,8 +1245,9 @@ var42 = var_listnode15->type->type_table[cltype43] == idtype44;
 }
 }
 if (!var42) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14943);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14695);
+show_backtrace(1);
 }
 var45 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode16, var_listnode15) /* concat on <self:ReduceAction318>*/;
 var_listnode16 = var45;
@@ -1252,8 +1265,9 @@ var46 = var_listnode17->type->type_table[cltype47] == idtype48;
 }
 }
 if (!var46) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14946);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14698);
+show_backtrace(1);
 }
 var49 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode18, var_listnode17) /* concat on <self:ReduceAction318>*/;
 var_listnode18 = var49;
@@ -1271,12 +1285,12 @@ var50 = var_tkwendnode19->type->type_table[cltype51] == idtype52;
 }
 }
 if (!var50) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14949);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14701);
+show_backtrace(1);
 }
 var53 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var53->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var53, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var_pannotationsnode8, var_pexterncodeblocknode14, var_listnode16, var_listnode18, var_tkwendnode19) /* init_astdclassdef on <var53:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var53);
 var_pclassdefnode1 = var53;
 var_node_list = var_pclassdefnode1;
 var54 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction318> */
@@ -1415,15 +1429,12 @@ var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode7 = var15;
 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_listnode16 = 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_listnode18 = var17;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -1439,8 +1450,9 @@ var18 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14990);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14742);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -1456,8 +1468,9 @@ var19 = var_tkwredefnode3->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14992);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14744);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -1473,8 +1486,9 @@ var22 = var_pvisibilitynode4->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14994);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14746);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -1490,8 +1504,9 @@ var25 = var_pclasskindnode5->type->type_table[cltype26] == idtype27;
 }
 }
 if (!var25) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14996);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14748);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist8;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -1507,12 +1522,12 @@ var28 = var_tclassidnode6->type->type_table[cltype29] == idtype30;
 }
 }
 if (!var28) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 14998);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14750);
+show_backtrace(1);
 }
 var31 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var31->class->vft[COLOR_array__Array__init]))(var31) /* init on <var31:Array[Object]>*/;
-CHECK_NEW_array__Array(var31);
 var_listnode12 = var31;
 var_listnode11 = var_nodearraylist9;
 /* <var_listnode11:nullable Object> isa Array[Object] */
@@ -1528,8 +1543,9 @@ var32 = var_listnode11->type->type_table[cltype33] == idtype34;
 }
 }
 if (!var32) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15001);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14753);
+show_backtrace(1);
 }
 var35 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode12, var_listnode11) /* concat on <self:ReduceAction319>*/;
 var_listnode12 = var35;
@@ -1538,7 +1554,6 @@ var37 = NULL;
 var38 = NULL;
 var39 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var36->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var36, var37, var38, var_listnode12, var39) /* init_aannotations on <var36:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var36);
 var_pannotationsnode8 = var36;
 var_pexterncodeblocknode14 = var_nodearraylist10;
 /* <var_pexterncodeblocknode14:nullable Object> isa nullable AExternCodeBlock */
@@ -1554,8 +1569,9 @@ var40 = var_pexterncodeblocknode14->type->type_table[cltype41] == idtype42;
 }
 }
 if (!var40) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15010);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14762);
+show_backtrace(1);
 }
 var_listnode15 = var_nodearraylist11;
 /* <var_listnode15:nullable Object> isa Array[Object] */
@@ -1571,8 +1587,9 @@ var43 = var_listnode15->type->type_table[cltype44] == idtype45;
 }
 }
 if (!var43) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15012);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14764);
+show_backtrace(1);
 }
 var46 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode16, var_listnode15) /* concat on <self:ReduceAction319>*/;
 var_listnode16 = var46;
@@ -1590,8 +1607,9 @@ var47 = var_listnode17->type->type_table[cltype48] == idtype49;
 }
 }
 if (!var47) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15015);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14767);
+show_backtrace(1);
 }
 var50 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode18, var_listnode17) /* concat on <self:ReduceAction319>*/;
 var_listnode18 = var50;
@@ -1609,12 +1627,12 @@ var51 = var_tkwendnode19->type->type_table[cltype52] == idtype53;
 }
 }
 if (!var51) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15018);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14770);
+show_backtrace(1);
 }
 var54 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var54->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var54, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode7, var_pannotationsnode8, var_pexterncodeblocknode14, var_listnode16, var_listnode18, var_tkwendnode19) /* init_astdclassdef on <var54:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var54);
 var_pclassdefnode1 = var54;
 var_node_list = var_pclassdefnode1;
 var55 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction319> */
@@ -1747,15 +1765,12 @@ var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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;
 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_listnode17 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode19 = var15;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -1771,8 +1786,9 @@ var16 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15057);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14809);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -1788,8 +1804,9 @@ var17 = var_pvisibilitynode4->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15059);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14811);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist3;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -1805,8 +1822,9 @@ var20 = var_pclasskindnode5->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15061);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14813);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist5;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -1822,8 +1840,9 @@ var23 = var_tclassidnode6->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15063);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14815);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist6;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -1839,14 +1858,14 @@ var26 = var_listnode7->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15065);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14817);
+show_backtrace(1);
 }
 var29 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction321>*/;
 var_listnode8 = var29;
 var30 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var30->class->vft[COLOR_array__Array__init]))(var30) /* init on <var30:Array[Object]>*/;
-CHECK_NEW_array__Array(var30);
 var_listnode13 = var30;
 var_listnode12 = var_nodearraylist7;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -1862,8 +1881,9 @@ var31 = var_listnode12->type->type_table[cltype32] == idtype33;
 }
 }
 if (!var31) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15069);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14821);
+show_backtrace(1);
 }
 var34 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction321>*/;
 var_listnode13 = var34;
@@ -1872,7 +1892,6 @@ var36 = NULL;
 var37 = NULL;
 var38 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var35->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var35, var36, var37, var_listnode13, var38) /* init_aannotations on <var35:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var35);
 var_pannotationsnode9 = var35;
 var_pexterncodeblocknode15 = var_nodearraylist8;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -1888,8 +1907,9 @@ var39 = var_pexterncodeblocknode15->type->type_table[cltype40] == idtype41;
 }
 }
 if (!var39) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15078);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14830);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist9;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -1905,8 +1925,9 @@ var42 = var_listnode16->type->type_table[cltype43] == idtype44;
 }
 }
 if (!var42) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15080);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14832);
+show_backtrace(1);
 }
 var45 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction321>*/;
 var_listnode17 = var45;
@@ -1924,8 +1945,9 @@ var46 = var_listnode18->type->type_table[cltype47] == idtype48;
 }
 }
 if (!var46) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15083);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14835);
+show_backtrace(1);
 }
 var49 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction321>*/;
 var_listnode19 = var49;
@@ -1943,13 +1965,13 @@ var50 = var_tkwendnode20->type->type_table[cltype51] == idtype52;
 }
 }
 if (!var50) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15086);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14838);
+show_backtrace(1);
 }
 var53 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 var54 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var53->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var53, var_pdocnode2, var54, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var53:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var53);
 var_pclassdefnode1 = var53;
 var_node_list = var_pclassdefnode1;
 var55 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction321> */
@@ -2089,15 +2111,12 @@ var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode8 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode17 = var15;
 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_listnode19 = var16;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -2113,8 +2132,9 @@ var17 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15126);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14878);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -2130,8 +2150,9 @@ var18 = var_tkwredefnode3->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15128);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14880);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -2147,8 +2168,9 @@ var21 = var_pvisibilitynode4->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15130);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14882);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -2164,8 +2186,9 @@ var24 = var_pclasskindnode5->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15132);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14884);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist6;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -2181,8 +2204,9 @@ var27 = var_tclassidnode6->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15134);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14886);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist7;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2198,14 +2222,14 @@ var30 = var_listnode7->type->type_table[cltype31] == idtype32;
 }
 }
 if (!var30) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15136);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14888);
+show_backtrace(1);
 }
 var33 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction322>*/;
 var_listnode8 = var33;
 var34 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var34->class->vft[COLOR_array__Array__init]))(var34) /* init on <var34:Array[Object]>*/;
-CHECK_NEW_array__Array(var34);
 var_listnode13 = var34;
 var_listnode12 = var_nodearraylist8;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -2221,8 +2245,9 @@ var35 = var_listnode12->type->type_table[cltype36] == idtype37;
 }
 }
 if (!var35) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15140);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14892);
+show_backtrace(1);
 }
 var38 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction322>*/;
 var_listnode13 = var38;
@@ -2231,7 +2256,6 @@ var40 = NULL;
 var41 = NULL;
 var42 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var39->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var39, var40, var41, var_listnode13, var42) /* init_aannotations on <var39:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var39);
 var_pannotationsnode9 = var39;
 var_pexterncodeblocknode15 = var_nodearraylist9;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -2247,8 +2271,9 @@ var43 = var_pexterncodeblocknode15->type->type_table[cltype44] == idtype45;
 }
 }
 if (!var43) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15149);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14901);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist10;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -2264,8 +2289,9 @@ var46 = var_listnode16->type->type_table[cltype47] == idtype48;
 }
 }
 if (!var46) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15151);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14903);
+show_backtrace(1);
 }
 var49 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction322>*/;
 var_listnode17 = var49;
@@ -2283,8 +2309,9 @@ var50 = var_listnode18->type->type_table[cltype51] == idtype52;
 }
 }
 if (!var50) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15154);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14906);
+show_backtrace(1);
 }
 var53 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction322>*/;
 var_listnode19 = var53;
@@ -2302,12 +2329,12 @@ var54 = var_tkwendnode20->type->type_table[cltype55] == idtype56;
 }
 }
 if (!var54) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15157);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14909);
+show_backtrace(1);
 }
 var57 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var57->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var57, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var57:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var57);
 var_pclassdefnode1 = var57;
 var_node_list = var_pclassdefnode1;
 var58 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction322> */
@@ -2444,15 +2471,12 @@ var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = 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_listnode8 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode17 = var15;
 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_listnode19 = var16;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -2468,8 +2492,9 @@ var17 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15197);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14949);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -2485,8 +2510,9 @@ var18 = var_pvisibilitynode4->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15199);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14951);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist3;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -2502,8 +2528,9 @@ var21 = var_pclasskindnode5->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15201);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14953);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist6;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -2519,8 +2546,9 @@ var24 = var_tclassidnode6->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15203);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14955);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist7;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2536,14 +2564,14 @@ var27 = var_listnode7->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15205);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14957);
+show_backtrace(1);
 }
 var30 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction323>*/;
 var_listnode8 = var30;
 var31 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var31->class->vft[COLOR_array__Array__init]))(var31) /* init on <var31:Array[Object]>*/;
-CHECK_NEW_array__Array(var31);
 var_listnode13 = var31;
 var_listnode12 = var_nodearraylist8;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -2559,8 +2587,9 @@ var32 = var_listnode12->type->type_table[cltype33] == idtype34;
 }
 }
 if (!var32) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15209);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14961);
+show_backtrace(1);
 }
 var35 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction323>*/;
 var_listnode13 = var35;
@@ -2569,7 +2598,6 @@ var37 = NULL;
 var38 = NULL;
 var39 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var36->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var36, var37, var38, var_listnode13, var39) /* init_aannotations on <var36:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var36);
 var_pannotationsnode9 = var36;
 var_pexterncodeblocknode15 = var_nodearraylist9;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -2585,8 +2613,9 @@ var40 = var_pexterncodeblocknode15->type->type_table[cltype41] == idtype42;
 }
 }
 if (!var40) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15218);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14970);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist10;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -2602,8 +2631,9 @@ var43 = var_listnode16->type->type_table[cltype44] == idtype45;
 }
 }
 if (!var43) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15220);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14972);
+show_backtrace(1);
 }
 var46 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction323>*/;
 var_listnode17 = var46;
@@ -2621,8 +2651,9 @@ var47 = var_listnode18->type->type_table[cltype48] == idtype49;
 }
 }
 if (!var47) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15223);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14975);
+show_backtrace(1);
 }
 var50 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction323>*/;
 var_listnode19 = var50;
@@ -2640,13 +2671,13 @@ var51 = var_tkwendnode20->type->type_table[cltype52] == idtype53;
 }
 }
 if (!var51) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15226);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 14978);
+show_backtrace(1);
 }
 var54 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 var55 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var54->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var54, var_pdocnode2, var55, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var54:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var54);
 var_pclassdefnode1 = var54;
 var_node_list = var_pclassdefnode1;
 var56 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction323> */
@@ -2787,15 +2818,12 @@ var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode8 = var15;
 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_listnode17 = 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_listnode19 = var17;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -2811,8 +2839,9 @@ var18 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15267);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15019);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -2828,8 +2857,9 @@ var19 = var_pvisibilitynode4->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15269);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15021);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist3;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -2845,8 +2875,9 @@ var22 = var_pclasskindnode5->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15271);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15023);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist7;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -2862,8 +2893,9 @@ var25 = var_tclassidnode6->type->type_table[cltype26] == idtype27;
 }
 }
 if (!var25) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15273);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15025);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist8;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -2879,14 +2911,14 @@ var28 = var_listnode7->type->type_table[cltype29] == idtype30;
 }
 }
 if (!var28) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15275);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15027);
+show_backtrace(1);
 }
 var31 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction324>*/;
 var_listnode8 = var31;
 var32 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var32->class->vft[COLOR_array__Array__init]))(var32) /* init on <var32:Array[Object]>*/;
-CHECK_NEW_array__Array(var32);
 var_listnode13 = var32;
 var_listnode12 = var_nodearraylist9;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -2902,8 +2934,9 @@ var33 = var_listnode12->type->type_table[cltype34] == idtype35;
 }
 }
 if (!var33) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15279);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15031);
+show_backtrace(1);
 }
 var36 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction324>*/;
 var_listnode13 = var36;
@@ -2912,7 +2945,6 @@ var38 = NULL;
 var39 = NULL;
 var40 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var37->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var37, var38, var39, var_listnode13, var40) /* init_aannotations on <var37:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var37);
 var_pannotationsnode9 = var37;
 var_pexterncodeblocknode15 = var_nodearraylist10;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -2928,8 +2960,9 @@ var41 = var_pexterncodeblocknode15->type->type_table[cltype42] == idtype43;
 }
 }
 if (!var41) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15288);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15040);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist11;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -2945,8 +2978,9 @@ var44 = var_listnode16->type->type_table[cltype45] == idtype46;
 }
 }
 if (!var44) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15290);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15042);
+show_backtrace(1);
 }
 var47 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction324>*/;
 var_listnode17 = var47;
@@ -2964,8 +2998,9 @@ var48 = var_listnode18->type->type_table[cltype49] == idtype50;
 }
 }
 if (!var48) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15293);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15045);
+show_backtrace(1);
 }
 var51 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction324>*/;
 var_listnode19 = var51;
@@ -2983,13 +3018,13 @@ var52 = var_tkwendnode20->type->type_table[cltype53] == idtype54;
 }
 }
 if (!var52) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15296);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15048);
+show_backtrace(1);
 }
 var55 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 var56 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var55->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var55, var_pdocnode2, var56, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var55:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var55);
 var_pclassdefnode1 = var55;
 var_node_list = var_pclassdefnode1;
 var57 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction324> */
@@ -3133,15 +3168,12 @@ var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = var14;
 var15 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
 var_listnode8 = var15;
 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_listnode17 = 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_listnode19 = var17;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -3157,8 +3189,9 @@ var18 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15337);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15089);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -3174,8 +3207,9 @@ var19 = var_tkwredefnode3->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15339);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15091);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -3191,8 +3225,9 @@ var22 = var_pvisibilitynode4->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15341);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15093);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -3208,8 +3243,9 @@ var25 = var_pclasskindnode5->type->type_table[cltype26] == idtype27;
 }
 }
 if (!var25) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15343);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15095);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist7;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -3225,8 +3261,9 @@ var28 = var_tclassidnode6->type->type_table[cltype29] == idtype30;
 }
 }
 if (!var28) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15345);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15097);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist8;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -3242,14 +3279,14 @@ var31 = var_listnode7->type->type_table[cltype32] == idtype33;
 }
 }
 if (!var31) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15347);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15099);
+show_backtrace(1);
 }
 var34 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction326>*/;
 var_listnode8 = var34;
 var35 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var35->class->vft[COLOR_array__Array__init]))(var35) /* init on <var35:Array[Object]>*/;
-CHECK_NEW_array__Array(var35);
 var_listnode13 = var35;
 var_listnode12 = var_nodearraylist9;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -3265,8 +3302,9 @@ var36 = var_listnode12->type->type_table[cltype37] == idtype38;
 }
 }
 if (!var36) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15351);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15103);
+show_backtrace(1);
 }
 var39 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction326>*/;
 var_listnode13 = var39;
@@ -3275,7 +3313,6 @@ var41 = NULL;
 var42 = NULL;
 var43 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var40->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var40, var41, var42, var_listnode13, var43) /* init_aannotations on <var40:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var40);
 var_pannotationsnode9 = var40;
 var_pexterncodeblocknode15 = var_nodearraylist10;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -3291,8 +3328,9 @@ var44 = var_pexterncodeblocknode15->type->type_table[cltype45] == idtype46;
 }
 }
 if (!var44) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15360);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15112);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist11;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -3308,8 +3346,9 @@ var47 = var_listnode16->type->type_table[cltype48] == idtype49;
 }
 }
 if (!var47) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15362);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15114);
+show_backtrace(1);
 }
 var50 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction326>*/;
 var_listnode17 = var50;
@@ -3327,8 +3366,9 @@ var51 = var_listnode18->type->type_table[cltype52] == idtype53;
 }
 }
 if (!var51) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15365);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15117);
+show_backtrace(1);
 }
 var54 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction326>*/;
 var_listnode19 = var54;
@@ -3346,12 +3386,12 @@ var55 = var_tkwendnode20->type->type_table[cltype56] == idtype57;
 }
 }
 if (!var55) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15368);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15120);
+show_backtrace(1);
 }
 var58 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var58->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var58, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var58:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var58);
 var_pclassdefnode1 = var58;
 var_node_list = var_pclassdefnode1;
 var59 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction326> */
@@ -3499,15 +3539,12 @@ var15 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p)
 var_nodearraylist1 = var15;
 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_listnode8 = 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_listnode17 = 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_listnode19 = var18;
 var_pdocnode2 = var_nodearraylist1;
 /* <var_pdocnode2:nullable Object> isa nullable ADoc */
@@ -3523,8 +3560,9 @@ var19 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15410);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15162);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -3540,8 +3578,9 @@ var20 = var_tkwredefnode3->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15412);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15164);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -3557,8 +3596,9 @@ var23 = var_pvisibilitynode4->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15414);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15166);
+show_backtrace(1);
 }
 var_pclasskindnode5 = var_nodearraylist4;
 /* <var_pclasskindnode5:nullable Object> isa nullable AClasskind */
@@ -3574,8 +3614,9 @@ var26 = var_pclasskindnode5->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15416);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15168);
+show_backtrace(1);
 }
 var_tclassidnode6 = var_nodearraylist8;
 /* <var_tclassidnode6:nullable Object> isa nullable TClassid */
@@ -3591,8 +3632,9 @@ var29 = var_tclassidnode6->type->type_table[cltype30] == idtype31;
 }
 }
 if (!var29) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15418);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15170);
+show_backtrace(1);
 }
 var_listnode7 = var_nodearraylist9;
 /* <var_listnode7:nullable Object> isa Array[Object] */
@@ -3608,14 +3650,14 @@ var32 = var_listnode7->type->type_table[cltype33] == idtype34;
 }
 }
 if (!var32) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15420);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15172);
+show_backtrace(1);
 }
 var35 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode8, var_listnode7) /* concat on <self:ReduceAction327>*/;
 var_listnode8 = var35;
 var36 = NEW_array__Array(&type_array__Arraykernel__Object);
 ((void (*)(val*))(var36->class->vft[COLOR_array__Array__init]))(var36) /* init on <var36:Array[Object]>*/;
-CHECK_NEW_array__Array(var36);
 var_listnode13 = var36;
 var_listnode12 = var_nodearraylist10;
 /* <var_listnode12:nullable Object> isa Array[Object] */
@@ -3631,8 +3673,9 @@ var37 = var_listnode12->type->type_table[cltype38] == idtype39;
 }
 }
 if (!var37) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15424);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15176);
+show_backtrace(1);
 }
 var40 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode13, var_listnode12) /* concat on <self:ReduceAction327>*/;
 var_listnode13 = var40;
@@ -3641,7 +3684,6 @@ var42 = NULL;
 var43 = NULL;
 var44 = NULL;
 ((void (*)(val*, val*, val*, val*, val*))(var41->class->vft[COLOR_parser_prod__AAnnotations__init_aannotations]))(var41, var42, var43, var_listnode13, var44) /* init_aannotations on <var41:AAnnotations>*/;
-CHECK_NEW_parser_nodes__AAnnotations(var41);
 var_pannotationsnode9 = var41;
 var_pexterncodeblocknode15 = var_nodearraylist11;
 /* <var_pexterncodeblocknode15:nullable Object> isa nullable AExternCodeBlock */
@@ -3657,8 +3699,9 @@ var45 = var_pexterncodeblocknode15->type->type_table[cltype46] == idtype47;
 }
 }
 if (!var45) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15433);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15185);
+show_backtrace(1);
 }
 var_listnode16 = var_nodearraylist12;
 /* <var_listnode16:nullable Object> isa Array[Object] */
@@ -3674,8 +3717,9 @@ var48 = var_listnode16->type->type_table[cltype49] == idtype50;
 }
 }
 if (!var48) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15435);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15187);
+show_backtrace(1);
 }
 var51 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode17, var_listnode16) /* concat on <self:ReduceAction327>*/;
 var_listnode17 = var51;
@@ -3693,8 +3737,9 @@ var52 = var_listnode18->type->type_table[cltype53] == idtype54;
 }
 }
 if (!var52) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15438);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15190);
+show_backtrace(1);
 }
 var55 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode19, var_listnode18) /* concat on <self:ReduceAction327>*/;
 var_listnode19 = var55;
@@ -3712,12 +3757,12 @@ var56 = var_tkwendnode20->type->type_table[cltype57] == idtype58;
 }
 }
 if (!var56) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15441);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15193);
+show_backtrace(1);
 }
 var59 = NEW_parser_nodes__AStdClassdef(&type_parser_nodes__AStdClassdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var59->class->vft[COLOR_parser_prod__AStdClassdef__init_astdclassdef]))(var59, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_pclasskindnode5, var_tclassidnode6, var_listnode8, var_pannotationsnode9, var_pexterncodeblocknode15, var_listnode17, var_listnode19, var_tkwendnode20) /* init_astdclassdef on <var59:AStdClassdef>*/;
-CHECK_NEW_parser_nodes__AStdClassdef(var59);
 var_pclassdefnode1 = var59;
 var_node_list = var_pclassdefnode1;
 var60 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction327> */
@@ -3764,12 +3809,12 @@ var2 = var_tkwclassnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var2) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15466);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15218);
+show_backtrace(1);
 }
 var3 = NEW_parser_nodes__AConcreteClasskind(&type_parser_nodes__AConcreteClasskind);
 ((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__AConcreteClasskind__init_aconcreteclasskind]))(var3, var_tkwclassnode2) /* init_aconcreteclasskind on <var3:AConcreteClasskind>*/;
-CHECK_NEW_parser_nodes__AConcreteClasskind(var3);
 var_pclasskindnode1 = var3;
 var_node_list = var_pclasskindnode1;
 var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction329> */
@@ -3824,8 +3869,9 @@ var3 = var_tkwabstractnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var3) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15482);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15234);
+show_backtrace(1);
 }
 var_tkwclassnode3 = var_nodearraylist2;
 /* <var_tkwclassnode3:nullable Object> isa nullable TKwclass */
@@ -3841,12 +3887,12 @@ var4 = var_tkwclassnode3->type->type_table[cltype5] == idtype6;
 }
 }
 if (!var4) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15484);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15236);
+show_backtrace(1);
 }
 var7 = NEW_parser_nodes__AAbstractClasskind(&type_parser_nodes__AAbstractClasskind);
 ((void (*)(val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AAbstractClasskind__init_aabstractclasskind]))(var7, var_tkwabstractnode2, var_tkwclassnode3) /* init_aabstractclasskind on <var7:AAbstractClasskind>*/;
-CHECK_NEW_parser_nodes__AAbstractClasskind(var7);
 var_pclasskindnode1 = var7;
 var_node_list = var_pclasskindnode1;
 var8 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction330> */
@@ -3893,12 +3939,12 @@ var2 = var_tkwinterfacenode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var2) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15500);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15252);
+show_backtrace(1);
 }
 var3 = NEW_parser_nodes__AInterfaceClasskind(&type_parser_nodes__AInterfaceClasskind);
 ((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__AInterfaceClasskind__init_ainterfaceclasskind]))(var3, var_tkwinterfacenode2) /* init_ainterfaceclasskind on <var3:AInterfaceClasskind>*/;
-CHECK_NEW_parser_nodes__AInterfaceClasskind(var3);
 var_pclasskindnode1 = var3;
 var_node_list = var_pclasskindnode1;
 var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction331> */
@@ -3945,12 +3991,12 @@ var2 = var_tkwenumnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var2) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15515);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15267);
+show_backtrace(1);
 }
 var3 = NEW_parser_nodes__AEnumClasskind(&type_parser_nodes__AEnumClasskind);
 ((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__AEnumClasskind__init_aenumclasskind]))(var3, var_tkwenumnode2) /* init_aenumclasskind on <var3:AEnumClasskind>*/;
-CHECK_NEW_parser_nodes__AEnumClasskind(var3);
 var_pclasskindnode1 = var3;
 var_node_list = var_pclasskindnode1;
 var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction332> */
@@ -3998,13 +4044,13 @@ var2 = var_tkwexternnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var2) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15530);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15282);
+show_backtrace(1);
 }
 var3 = NEW_parser_nodes__AExternClasskind(&type_parser_nodes__AExternClasskind);
 var4 = NULL;
 ((void (*)(val*, val*, val*))(var3->class->vft[COLOR_parser_prod__AExternClasskind__init_aexternclasskind]))(var3, var_tkwexternnode2, var4) /* init_aexternclasskind on <var3:AExternClasskind>*/;
-CHECK_NEW_parser_nodes__AExternClasskind(var3);
 var_pclasskindnode1 = var3;
 var_node_list = var_pclasskindnode1;
 var5 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction333> */
@@ -4059,8 +4105,9 @@ var3 = var_tkwexternnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var3) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15547);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15299);
+show_backtrace(1);
 }
 var_tkwclassnode3 = var_nodearraylist2;
 /* <var_tkwclassnode3:nullable Object> isa nullable TKwclass */
@@ -4076,12 +4123,12 @@ var4 = var_tkwclassnode3->type->type_table[cltype5] == idtype6;
 }
 }
 if (!var4) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15549);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15301);
+show_backtrace(1);
 }
 var7 = NEW_parser_nodes__AExternClasskind(&type_parser_nodes__AExternClasskind);
 ((void (*)(val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AExternClasskind__init_aexternclasskind]))(var7, var_tkwexternnode2, var_tkwclassnode3) /* init_aexternclasskind on <var7:AExternClasskind>*/;
-CHECK_NEW_parser_nodes__AExternClasskind(var7);
 var_pclasskindnode1 = var7;
 var_node_list = var_pclasskindnode1;
 var8 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction334> */
@@ -4131,7 +4178,6 @@ 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_listnode2 = var6;
 var_pformaldefnode1 = var_nodearraylist3;
 var7 = NULL;
@@ -4201,7 +4247,6 @@ 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_listnode3 = var7;
 var_pformaldefnode1 = var_nodearraylist3;
 var_listnode2 = var_nodearraylist4;
@@ -4218,8 +4263,9 @@ var8 = var_listnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15591);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15343);
+show_backtrace(1);
 }
 var9 = NULL;
 if (var_pformaldefnode1 == NULL) {
@@ -4315,14 +4361,14 @@ var2 = var_tclassidnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var2) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15620);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15372);
+show_backtrace(1);
 }
 var3 = NEW_parser_nodes__AFormaldef(&type_parser_nodes__AFormaldef);
 var4 = NULL;
 var5 = NULL;
 ((void (*)(val*, val*, val*, val*))(var3->class->vft[COLOR_parser_prod__AFormaldef__init_aformaldef]))(var3, var_tclassidnode2, var4, var5) /* init_aformaldef on <var3:AFormaldef>*/;
-CHECK_NEW_parser_nodes__AFormaldef(var3);
 var_pformaldefnode1 = var3;
 var_node_list = var_pformaldefnode1;
 var6 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction338> */
@@ -4378,8 +4424,9 @@ var3 = var_tclassidnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var3) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15638);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15390);
+show_backtrace(1);
 }
 var_pannotationsnode4 = var_nodearraylist2;
 /* <var_pannotationsnode4:nullable Object> isa nullable AAnnotations */
@@ -4395,13 +4442,13 @@ var4 = var_pannotationsnode4->type->type_table[cltype5] == idtype6;
 }
 }
 if (!var4) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15640);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15392);
+show_backtrace(1);
 }
 var7 = NEW_parser_nodes__AFormaldef(&type_parser_nodes__AFormaldef);
 var8 = NULL;
 ((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AFormaldef__init_aformaldef]))(var7, var_tclassidnode2, var8, var_pannotationsnode4) /* init_aformaldef on <var7:AFormaldef>*/;
-CHECK_NEW_parser_nodes__AFormaldef(var7);
 var_pformaldefnode1 = var7;
 var_node_list = var_pformaldefnode1;
 var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction339> */
@@ -4457,8 +4504,9 @@ var3 = var_tclassidnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var3) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15658);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15410);
+show_backtrace(1);
 }
 var_ptypenode3 = var_nodearraylist2;
 /* <var_ptypenode3:nullable Object> isa nullable AType */
@@ -4474,13 +4522,13 @@ var4 = var_ptypenode3->type->type_table[cltype5] == idtype6;
 }
 }
 if (!var4) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15660);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15412);
+show_backtrace(1);
 }
 var7 = NEW_parser_nodes__AFormaldef(&type_parser_nodes__AFormaldef);
 var8 = NULL;
 ((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AFormaldef__init_aformaldef]))(var7, var_tclassidnode2, var_ptypenode3, var8) /* init_aformaldef on <var7:AFormaldef>*/;
-CHECK_NEW_parser_nodes__AFormaldef(var7);
 var_pformaldefnode1 = var7;
 var_node_list = var_pformaldefnode1;
 var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction340> */
@@ -4543,8 +4591,9 @@ var4 = var_tclassidnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var4) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15679);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15431);
+show_backtrace(1);
 }
 var_ptypenode3 = var_nodearraylist3;
 /* <var_ptypenode3:nullable Object> isa nullable AType */
@@ -4560,8 +4609,9 @@ var5 = var_ptypenode3->type->type_table[cltype6] == idtype7;
 }
 }
 if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15681);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15433);
+show_backtrace(1);
 }
 var_pannotationsnode4 = var_nodearraylist2;
 /* <var_pannotationsnode4:nullable Object> isa nullable AAnnotations */
@@ -4577,12 +4627,12 @@ var8 = var_pannotationsnode4->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15683);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15435);
+show_backtrace(1);
 }
 var11 = NEW_parser_nodes__AFormaldef(&type_parser_nodes__AFormaldef);
 ((void (*)(val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AFormaldef__init_aformaldef]))(var11, var_tclassidnode2, var_ptypenode3, var_pannotationsnode4) /* init_aformaldef on <var11:AFormaldef>*/;
-CHECK_NEW_parser_nodes__AFormaldef(var11);
 var_pformaldefnode1 = var11;
 var_node_list = var_pformaldefnode1;
 var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction341> */
@@ -4646,8 +4696,9 @@ var5 = var_tkwsupernode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15703);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15455);
+show_backtrace(1);
 }
 var_ptypenode3 = var_nodearraylist4;
 /* <var_ptypenode3:nullable Object> isa nullable AType */
@@ -4663,13 +4714,13 @@ var6 = var_ptypenode3->type->type_table[cltype7] == idtype8;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15705);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15457);
+show_backtrace(1);
 }
 var9 = NEW_parser_nodes__ASuperclass(&type_parser_nodes__ASuperclass);
 var10 = NULL;
 ((void (*)(val*, val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ASuperclass__init_asuperclass]))(var9, var_tkwsupernode2, var_ptypenode3, var10) /* init_asuperclass on <var9:ASuperclass>*/;
-CHECK_NEW_parser_nodes__ASuperclass(var9);
 var_psuperclassnode1 = var9;
 var_node_list = var_psuperclassnode1;
 var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction342> */
@@ -4740,8 +4791,9 @@ var6 = var_tkwsupernode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15726);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15478);
+show_backtrace(1);
 }
 var_ptypenode3 = var_nodearraylist4;
 /* <var_ptypenode3:nullable Object> isa nullable AType */
@@ -4757,8 +4809,9 @@ var7 = var_ptypenode3->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15728);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15480);
+show_backtrace(1);
 }
 var_pannotationsnode4 = var_nodearraylist5;
 /* <var_pannotationsnode4:nullable Object> isa nullable AAnnotations */
@@ -4774,12 +4827,12 @@ var10 = var_pannotationsnode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15730);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15482);
+show_backtrace(1);
 }
 var13 = NEW_parser_nodes__ASuperclass(&type_parser_nodes__ASuperclass);
 ((void (*)(val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__ASuperclass__init_asuperclass]))(var13, var_tkwsupernode2, var_ptypenode3, var_pannotationsnode4) /* init_asuperclass on <var13:ASuperclass>*/;
-CHECK_NEW_parser_nodes__ASuperclass(var13);
 var_psuperclassnode1 = var13;
 var_node_list = var_psuperclassnode1;
 var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction343> */
@@ -4903,8 +4956,9 @@ var8 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15765);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15517);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -4920,8 +4974,9 @@ var9 = var_pvisibilitynode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15767);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15519);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -4937,8 +4992,9 @@ var12 = var_tkwmethnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15769);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15521);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -4954,8 +5010,9 @@ var15 = var_pmethidnode6->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15771);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15523);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -4971,8 +5028,9 @@ var18 = var_psignaturenode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15773);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15525);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist7;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -4988,14 +5046,14 @@ var21 = var_pexprnode9->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15775);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15527);
+show_backtrace(1);
 }
 var24 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var25 = NULL;
 var26 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var24->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var24, var_pdocnode2, var25, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var26, var_pexprnode9) /* init_aconcretemethpropdef on <var24:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var24);
 var_ppropdefnode1 = var24;
 var_node_list = var_ppropdefnode1;
 var27 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction345> */
@@ -5095,8 +5153,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15804);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15556);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -5112,8 +5171,9 @@ var10 = var_tkwredefnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15806);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15558);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -5129,8 +5189,9 @@ var13 = var_pvisibilitynode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15808);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15560);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -5146,8 +5207,9 @@ var16 = var_tkwmethnode5->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15810);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15562);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -5163,8 +5225,9 @@ var19 = var_pmethidnode6->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15812);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15564);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -5180,8 +5243,9 @@ var22 = var_psignaturenode7->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15814);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15566);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist8;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -5197,13 +5261,13 @@ var25 = var_pexprnode9->type->type_table[cltype26] == idtype27;
 }
 }
 if (!var25) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15816);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15568);
+show_backtrace(1);
 }
 var28 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var29 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var28->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var28, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var29, var_pexprnode9) /* init_aconcretemethpropdef on <var28:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var28);
 var_ppropdefnode1 = var28;
 var_node_list = var_ppropdefnode1;
 var30 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction346> */
@@ -5303,8 +5367,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15845);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15597);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -5320,8 +5385,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15847);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15599);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -5337,8 +5403,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15849);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15601);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -5354,8 +5421,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15851);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15603);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -5371,8 +5439,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15853);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15605);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist6;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -5388,8 +5457,9 @@ var22 = var_pannotationsnode8->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15855);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15607);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist8;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -5405,13 +5475,13 @@ var25 = var_pexprnode9->type->type_table[cltype26] == idtype27;
 }
 }
 if (!var25) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15857);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15609);
+show_backtrace(1);
 }
 var28 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var29 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var28->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var28, var_pdocnode2, var29, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8, var_pexprnode9) /* init_aconcretemethpropdef on <var28:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var28);
 var_ppropdefnode1 = var28;
 var_node_list = var_ppropdefnode1;
 var30 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction347> */
@@ -5518,8 +5588,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15887);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15639);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -5535,8 +5606,9 @@ var11 = var_tkwredefnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15889);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15641);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -5552,8 +5624,9 @@ var14 = var_pvisibilitynode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15891);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15643);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -5569,8 +5642,9 @@ var17 = var_tkwmethnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15893);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15645);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -5586,8 +5660,9 @@ var20 = var_pmethidnode6->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15895);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15647);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -5603,8 +5678,9 @@ var23 = var_psignaturenode7->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15897);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15649);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist7;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -5620,8 +5696,9 @@ var26 = var_pannotationsnode8->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15899);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15651);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist9;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -5637,12 +5714,12 @@ var29 = var_pexprnode9->type->type_table[cltype30] == idtype31;
 }
 }
 if (!var29) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15901);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15653);
+show_backtrace(1);
 }
 var32 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var32->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var32, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8, var_pexprnode9) /* init_aconcretemethpropdef on <var32:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var32);
 var_ppropdefnode1 = var32;
 var_node_list = var_ppropdefnode1;
 var33 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction348> */
@@ -5739,8 +5816,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15930);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15682);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -5756,8 +5834,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15932);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15684);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -5773,8 +5852,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15934);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15686);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -5790,8 +5870,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15936);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15688);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -5807,8 +5888,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15938);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15690);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist7;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -5824,14 +5906,14 @@ var22 = var_pexprnode9->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15940);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15692);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var26 = NULL;
 var27 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var25, var_pdocnode2, var26, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var27, var_pexprnode9) /* init_aconcretemethpropdef on <var25:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction349> */
@@ -5935,8 +6017,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15970);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15722);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -5952,8 +6035,9 @@ var11 = var_tkwredefnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15972);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15724);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -5969,8 +6053,9 @@ var14 = var_pvisibilitynode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15974);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15726);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -5986,8 +6071,9 @@ var17 = var_tkwmethnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15976);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15728);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -6003,8 +6089,9 @@ var20 = var_pmethidnode6->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15978);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15730);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -6020,8 +6107,9 @@ var23 = var_psignaturenode7->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15980);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15732);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist8;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -6037,13 +6125,13 @@ var26 = var_pexprnode9->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 15982);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15734);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var30 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var29, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var30, var_pexprnode9) /* init_aconcretemethpropdef on <var29:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction350> */
@@ -6147,8 +6235,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16012);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15764);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -6164,8 +6253,9 @@ var11 = var_pvisibilitynode4->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16014);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15766);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -6181,8 +6271,9 @@ var14 = var_tkwmethnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16016);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15768);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -6198,8 +6289,9 @@ var17 = var_pmethidnode6->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16018);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15770);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -6215,8 +6307,9 @@ var20 = var_psignaturenode7->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16020);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15772);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist6;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -6232,8 +6325,9 @@ var23 = var_pannotationsnode8->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16022);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15774);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist8;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -6249,13 +6343,13 @@ var26 = var_pexprnode9->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16024);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15776);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var30 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var29, var_pdocnode2, var30, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8, var_pexprnode9) /* init_aconcretemethpropdef on <var29:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction351> */
@@ -6366,8 +6460,9 @@ var11 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16055);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15807);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -6383,8 +6478,9 @@ var12 = var_tkwredefnode3->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16057);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15809);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -6400,8 +6496,9 @@ var15 = var_pvisibilitynode4->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16059);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15811);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -6417,8 +6514,9 @@ var18 = var_tkwmethnode5->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16061);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15813);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -6434,8 +6532,9 @@ var21 = var_pmethidnode6->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16063);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15815);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -6451,8 +6550,9 @@ var24 = var_psignaturenode7->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16065);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15817);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist7;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -6468,8 +6568,9 @@ var27 = var_pannotationsnode8->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16067);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15819);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist9;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -6485,12 +6586,12 @@ var30 = var_pexprnode9->type->type_table[cltype31] == idtype32;
 }
 }
 if (!var30) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16069);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15821);
+show_backtrace(1);
 }
 var33 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var33->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var33, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8, var_pexprnode9) /* init_aconcretemethpropdef on <var33:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var33);
 var_ppropdefnode1 = var33;
 var_node_list = var_ppropdefnode1;
 var34 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction352> */
@@ -6587,8 +6688,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16098);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15850);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -6604,8 +6706,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16100);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15852);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -6621,8 +6724,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16102);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15854);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -6638,8 +6742,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16104);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15856);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -6655,8 +6760,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16106);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15858);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist8;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -6672,14 +6778,14 @@ var22 = var_pexprnode9->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16108);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15860);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var26 = NULL;
 var27 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var25, var_pdocnode2, var26, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var27, var_pexprnode9) /* init_aconcretemethpropdef on <var25:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction353> */
@@ -6783,8 +6889,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16138);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15890);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -6800,8 +6907,9 @@ var11 = var_tkwredefnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16140);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15892);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -6817,8 +6925,9 @@ var14 = var_pvisibilitynode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16142);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15894);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -6834,8 +6943,9 @@ var17 = var_tkwmethnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16144);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15896);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -6851,8 +6961,9 @@ var20 = var_pmethidnode6->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16146);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15898);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -6868,8 +6979,9 @@ var23 = var_psignaturenode7->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16148);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15900);
+show_backtrace(1);
 }
 var_pexprnode9 = var_nodearraylist9;
 /* <var_pexprnode9:nullable Object> isa nullable AExpr */
@@ -6885,13 +6997,13 @@ var26 = var_pexprnode9->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16150);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15902);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AConcreteMethPropdef(&type_parser_nodes__AConcreteMethPropdef);
 var30 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AConcreteMethPropdef__init_aconcretemethpropdef]))(var29, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var30, var_pexprnode9) /* init_aconcretemethpropdef on <var29:AConcreteMethPropdef>*/;
-CHECK_NEW_parser_nodes__AConcreteMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction354> */
@@ -6979,8 +7091,9 @@ var7 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16177);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15929);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -6996,8 +7109,9 @@ var8 = var_pvisibilitynode4->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16179);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15931);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7013,8 +7127,9 @@ var11 = var_tkwmethnode5->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16181);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15933);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7030,8 +7145,9 @@ var14 = var_pmethidnode6->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16183);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15935);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7047,8 +7163,9 @@ var17 = var_psignaturenode7->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16185);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15937);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist6;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -7064,13 +7181,13 @@ var20 = var_pannotationsnode8->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16187);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15939);
+show_backtrace(1);
 }
 var23 = NEW_parser_nodes__ADeferredMethPropdef(&type_parser_nodes__ADeferredMethPropdef);
 var24 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__ADeferredMethPropdef__init_adeferredmethpropdef]))(var23, var_pdocnode2, var24, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8) /* init_adeferredmethpropdef on <var23:ADeferredMethPropdef>*/;
-CHECK_NEW_parser_nodes__ADeferredMethPropdef(var23);
 var_ppropdefnode1 = var23;
 var_node_list = var_ppropdefnode1;
 var25 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction355> */
@@ -7165,8 +7282,9 @@ var8 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16214);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15966);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -7182,8 +7300,9 @@ var9 = var_tkwredefnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16216);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15968);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -7199,8 +7318,9 @@ var12 = var_pvisibilitynode4->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16218);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15970);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7216,8 +7336,9 @@ var15 = var_tkwmethnode5->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16220);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15972);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7233,8 +7354,9 @@ var18 = var_pmethidnode6->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16222);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15974);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7250,8 +7372,9 @@ var21 = var_psignaturenode7->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16224);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15976);
+show_backtrace(1);
 }
 var_pannotationsnode8 = var_nodearraylist7;
 /* <var_pannotationsnode8:nullable Object> isa nullable AAnnotations */
@@ -7267,12 +7390,12 @@ var24 = var_pannotationsnode8->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16226);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 15978);
+show_backtrace(1);
 }
 var27 = NEW_parser_nodes__ADeferredMethPropdef(&type_parser_nodes__ADeferredMethPropdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*))(var27->class->vft[COLOR_parser_prod__ADeferredMethPropdef__init_adeferredmethpropdef]))(var27, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_pannotationsnode8) /* init_adeferredmethpropdef on <var27:ADeferredMethPropdef>*/;
-CHECK_NEW_parser_nodes__ADeferredMethPropdef(var27);
 var_ppropdefnode1 = var27;
 var_node_list = var_ppropdefnode1;
 var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction356> */
@@ -7361,8 +7484,9 @@ var8 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16253);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16005);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -7378,8 +7502,9 @@ var9 = var_pvisibilitynode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16255);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16007);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7395,8 +7520,9 @@ var12 = var_tkwmethnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16257);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16009);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7412,8 +7538,9 @@ var15 = var_pmethidnode6->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16259);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16011);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7429,14 +7556,14 @@ var18 = var_psignaturenode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16261);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16013);
+show_backtrace(1);
 }
 var21 = NEW_parser_nodes__ADeferredMethPropdef(&type_parser_nodes__ADeferredMethPropdef);
 var22 = NULL;
 var23 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__ADeferredMethPropdef__init_adeferredmethpropdef]))(var21, var_pdocnode2, var22, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var23) /* init_adeferredmethpropdef on <var21:ADeferredMethPropdef>*/;
-CHECK_NEW_parser_nodes__ADeferredMethPropdef(var21);
 var_ppropdefnode1 = var21;
 var_node_list = var_ppropdefnode1;
 var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction357> */
@@ -7532,8 +7659,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16289);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16041);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -7549,8 +7677,9 @@ var10 = var_tkwredefnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16291);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16043);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -7566,8 +7695,9 @@ var13 = var_pvisibilitynode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16293);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16045);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7583,8 +7713,9 @@ var16 = var_tkwmethnode5->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16295);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16047);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7600,8 +7731,9 @@ var19 = var_pmethidnode6->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16297);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16049);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7617,13 +7749,13 @@ var22 = var_psignaturenode7->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16299);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16051);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__ADeferredMethPropdef(&type_parser_nodes__ADeferredMethPropdef);
 var26 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__ADeferredMethPropdef__init_adeferredmethpropdef]))(var25, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var26) /* init_adeferredmethpropdef on <var25:ADeferredMethPropdef>*/;
-CHECK_NEW_parser_nodes__ADeferredMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var27 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction358> */
@@ -7711,8 +7843,9 @@ var8 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16326);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16078);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -7728,8 +7861,9 @@ var9 = var_pvisibilitynode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16328);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16080);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7745,8 +7879,9 @@ var12 = var_tkwmethnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16330);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16082);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7762,8 +7897,9 @@ var15 = var_pmethidnode6->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16332);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16084);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7779,13 +7915,13 @@ var18 = var_psignaturenode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16334);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16086);
+show_backtrace(1);
 }
 var21 = NEW_parser_nodes__AInternMethPropdef(&type_parser_nodes__AInternMethPropdef);
 var22 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AInternMethPropdef__init_ainternmethpropdef]))(var21, var_pdocnode2, var22, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7) /* init_ainternmethpropdef on <var21:AInternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AInternMethPropdef(var21);
 var_ppropdefnode1 = var21;
 var_node_list = var_ppropdefnode1;
 var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction359> */
@@ -7880,8 +8016,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16361);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16113);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -7897,8 +8034,9 @@ var10 = var_tkwredefnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16363);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16115);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -7914,8 +8052,9 @@ var13 = var_pvisibilitynode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16365);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16117);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -7931,8 +8070,9 @@ var16 = var_tkwmethnode5->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16367);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16119);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -7948,8 +8088,9 @@ var19 = var_pmethidnode6->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16369);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16121);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -7965,12 +8106,12 @@ var22 = var_psignaturenode7->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16371);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16123);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AInternMethPropdef(&type_parser_nodes__AInternMethPropdef);
 ((void (*)(val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AInternMethPropdef__init_ainternmethpropdef]))(var25, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7) /* init_ainternmethpropdef on <var25:AInternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AInternMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var26 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction360> */
@@ -8061,8 +8202,9 @@ var8 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16397);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16149);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -8078,8 +8220,9 @@ var9 = var_pvisibilitynode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16399);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16151);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -8095,8 +8238,9 @@ var12 = var_tkwmethnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16401);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16153);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -8112,8 +8256,9 @@ var15 = var_pmethidnode6->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16403);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16155);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -8129,8 +8274,9 @@ var18 = var_psignaturenode7->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16405);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16157);
+show_backtrace(1);
 }
 var21 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var22 = NULL;
@@ -8138,7 +8284,6 @@ var23 = NULL;
 var24 = NULL;
 var25 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var21, var_pdocnode2, var22, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var23, var24, var25) /* init_aexternmethpropdef on <var21:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var21);
 var_ppropdefnode1 = var21;
 var_node_list = var_ppropdefnode1;
 var26 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction361> */
@@ -8236,8 +8381,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16435);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16187);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -8253,8 +8399,9 @@ var10 = var_tkwredefnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16437);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16189);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -8270,8 +8417,9 @@ var13 = var_pvisibilitynode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16439);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16191);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -8287,8 +8435,9 @@ var16 = var_tkwmethnode5->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16441);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16193);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -8304,8 +8453,9 @@ var19 = var_pmethidnode6->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16443);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16195);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -8321,15 +8471,15 @@ var22 = var_psignaturenode7->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16445);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16197);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var26 = NULL;
 var27 = NULL;
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var25, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var26, var27, var28) /* init_aexternmethpropdef on <var25:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction362> */
@@ -8427,8 +8577,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16475);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16227);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -8444,8 +8595,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16477);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16229);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -8461,8 +8613,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16479);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16231);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -8478,8 +8631,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16481);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16233);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -8495,8 +8649,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16483);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16235);
+show_backtrace(1);
 }
 var_tstringnode8 = var_nodearraylist8;
 /* <var_tstringnode8:nullable Object> isa nullable TString */
@@ -8512,15 +8667,15 @@ var22 = var_tstringnode8->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16485);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16237);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var26 = NULL;
 var27 = NULL;
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var25, var_pdocnode2, var26, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_tstringnode8, var27, var28) /* init_aexternmethpropdef on <var25:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction363> */
@@ -8625,8 +8780,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16516);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16268);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -8642,8 +8798,9 @@ var11 = var_tkwredefnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16518);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16270);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -8659,8 +8816,9 @@ var14 = var_pvisibilitynode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16520);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16272);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -8676,8 +8834,9 @@ var17 = var_tkwmethnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16522);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16274);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -8693,8 +8852,9 @@ var20 = var_pmethidnode6->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16524);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16276);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -8710,8 +8870,9 @@ var23 = var_psignaturenode7->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16526);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16278);
+show_backtrace(1);
 }
 var_tstringnode8 = var_nodearraylist9;
 /* <var_tstringnode8:nullable Object> isa nullable TString */
@@ -8727,14 +8888,14 @@ var26 = var_tstringnode8->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16528);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16280);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var30 = NULL;
 var31 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var29, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_tstringnode8, var30, var31) /* init_aexternmethpropdef on <var29:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction364> */
@@ -8832,8 +8993,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16558);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16310);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -8849,8 +9011,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16560);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16312);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -8866,8 +9029,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16562);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16314);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -8883,8 +9047,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16564);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16316);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -8900,8 +9065,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16566);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16318);
+show_backtrace(1);
 }
 var_pexterncallsnode9 = var_nodearraylist8;
 /* <var_pexterncallsnode9:nullable Object> isa nullable AExternCalls */
@@ -8917,15 +9083,15 @@ var22 = var_pexterncallsnode9->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16568);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16320);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var26 = NULL;
 var27 = NULL;
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var25, var_pdocnode2, var26, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var27, var_pexterncallsnode9, var28) /* init_aexternmethpropdef on <var25:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction365> */
@@ -9030,8 +9196,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16599);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16351);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -9047,8 +9214,9 @@ var11 = var_tkwredefnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16601);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16353);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -9064,8 +9232,9 @@ var14 = var_pvisibilitynode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16603);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16355);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -9081,8 +9250,9 @@ var17 = var_tkwmethnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16605);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16357);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -9098,8 +9268,9 @@ var20 = var_pmethidnode6->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16607);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16359);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -9115,8 +9286,9 @@ var23 = var_psignaturenode7->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16609);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16361);
+show_backtrace(1);
 }
 var_pexterncallsnode9 = var_nodearraylist9;
 /* <var_pexterncallsnode9:nullable Object> isa nullable AExternCalls */
@@ -9132,14 +9304,14 @@ var26 = var_pexterncallsnode9->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16611);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16363);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var30 = NULL;
 var31 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var29, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var30, var_pexterncallsnode9, var31) /* init_aexternmethpropdef on <var29:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction366> */
@@ -9244,8 +9416,9 @@ var10 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16642);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16394);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -9261,8 +9434,9 @@ var11 = var_pvisibilitynode4->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16644);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16396);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -9278,8 +9452,9 @@ var14 = var_tkwmethnode5->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16646);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16398);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -9295,8 +9470,9 @@ var17 = var_pmethidnode6->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16648);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16400);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -9312,8 +9488,9 @@ var20 = var_psignaturenode7->type->type_table[cltype21] == idtype22;
 }
 }
 if (!var20) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16650);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16402);
+show_backtrace(1);
 }
 var_tstringnode8 = var_nodearraylist8;
 /* <var_tstringnode8:nullable Object> isa nullable TString */
@@ -9329,8 +9506,9 @@ var23 = var_tstringnode8->type->type_table[cltype24] == idtype25;
 }
 }
 if (!var23) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16652);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16404);
+show_backtrace(1);
 }
 var_pexterncallsnode9 = var_nodearraylist9;
 /* <var_pexterncallsnode9:nullable Object> isa nullable AExternCalls */
@@ -9346,14 +9524,14 @@ var26 = var_pexterncallsnode9->type->type_table[cltype27] == idtype28;
 }
 }
 if (!var26) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16654);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16406);
+show_backtrace(1);
 }
 var29 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var30 = NULL;
 var31 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var29->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var29, var_pdocnode2, var30, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_tstringnode8, var_pexterncallsnode9, var31) /* init_aexternmethpropdef on <var29:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var29);
 var_ppropdefnode1 = var29;
 var_node_list = var_ppropdefnode1;
 var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction367> */
@@ -9465,8 +9643,9 @@ var11 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var11) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16686);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16438);
+show_backtrace(1);
 }
 var_tkwredefnode3 = var_nodearraylist2;
 /* <var_tkwredefnode3:nullable Object> isa nullable TKwredef */
@@ -9482,8 +9661,9 @@ var12 = var_tkwredefnode3->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16688);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16440);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist3;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -9499,8 +9679,9 @@ var15 = var_pvisibilitynode4->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16690);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16442);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist4;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -9516,8 +9697,9 @@ var18 = var_tkwmethnode5->type->type_table[cltype19] == idtype20;
 }
 }
 if (!var18) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16692);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16444);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist5;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -9533,8 +9715,9 @@ var21 = var_pmethidnode6->type->type_table[cltype22] == idtype23;
 }
 }
 if (!var21) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16694);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16446);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist6;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -9550,8 +9733,9 @@ var24 = var_psignaturenode7->type->type_table[cltype25] == idtype26;
 }
 }
 if (!var24) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16696);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16448);
+show_backtrace(1);
 }
 var_tstringnode8 = var_nodearraylist9;
 /* <var_tstringnode8:nullable Object> isa nullable TString */
@@ -9567,8 +9751,9 @@ var27 = var_tstringnode8->type->type_table[cltype28] == idtype29;
 }
 }
 if (!var27) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16698);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16450);
+show_backtrace(1);
 }
 var_pexterncallsnode9 = var_nodearraylist10;
 /* <var_pexterncallsnode9:nullable Object> isa nullable AExternCalls */
@@ -9584,13 +9769,13 @@ var30 = var_pexterncallsnode9->type->type_table[cltype31] == idtype32;
 }
 }
 if (!var30) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16700);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16452);
+show_backtrace(1);
 }
 var33 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var34 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var33->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var33, var_pdocnode2, var_tkwredefnode3, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var_tstringnode8, var_pexterncallsnode9, var34) /* init_aexternmethpropdef on <var33:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var33);
 var_ppropdefnode1 = var33;
 var_node_list = var_ppropdefnode1;
 var35 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction368> */
@@ -9688,8 +9873,9 @@ var9 = var_pdocnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16730);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16482);
+show_backtrace(1);
 }
 var_pvisibilitynode4 = var_nodearraylist2;
 /* <var_pvisibilitynode4:nullable Object> isa nullable AVisibility */
@@ -9705,8 +9891,9 @@ var10 = var_pvisibilitynode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16732);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16484);
+show_backtrace(1);
 }
 var_tkwmethnode5 = var_nodearraylist3;
 /* <var_tkwmethnode5:nullable Object> isa nullable TKwmeth */
@@ -9722,8 +9909,9 @@ var13 = var_tkwmethnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16734);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16486);
+show_backtrace(1);
 }
 var_pmethidnode6 = var_nodearraylist4;
 /* <var_pmethidnode6:nullable Object> isa nullable AMethid */
@@ -9739,8 +9927,9 @@ var16 = var_pmethidnode6->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16736);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16488);
+show_backtrace(1);
 }
 var_psignaturenode7 = var_nodearraylist5;
 /* <var_psignaturenode7:nullable Object> isa nullable ASignature */
@@ -9756,8 +9945,9 @@ var19 = var_psignaturenode7->type->type_table[cltype20] == idtype21;
 }
 }
 if (!var19) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16738);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16490);
+show_backtrace(1);
 }
 var_pexterncodeblocknode10 = var_nodearraylist8;
 /* <var_pexterncodeblocknode10:nullable Object> isa nullable AExternCodeBlock */
@@ -9773,15 +9963,15 @@ var22 = var_pexterncodeblocknode10->type->type_table[cltype23] == idtype24;
 }
 }
 if (!var22) {
-fprintf(stderr, "Runtime error: %s (%s:%d)\n", "Assert failed", "src/parser/parser.nit", 16740);
-exit(1);
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 16492);
+show_backtrace(1);
 }
 var25 = NEW_parser_nodes__AExternMethPropdef(&type_parser_nodes__AExternMethPropdef);
 var26 = NULL;
 var27 = NULL;
 var28 = NULL;
 ((void (*)(val*, val*, val*, val*, val*, val*, val*, val*, val*, val*))(var25->class->vft[COLOR_parser_prod__AExternMethPropdef__init_aexternmethpropdef]))(var25, var_pdocnode2, var26, var_pvisibilitynode4, var_tkwmethnode5, var_pmethidnode6, var_psignaturenode7, var27, var28, var_pexterncodeblocknode10) /* init_aexternmethpropdef on <var25:AExternMethPropdef>*/;
-CHECK_NEW_parser_nodes__AExternMethPropdef(var25);
 var_ppropdefnode1 = var25;
 var_node_list = var_ppropdefnode1;
 var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction369> */