compiler: erasure use `ctype_extern` to box stuff

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/compiler/separate_erasure_compiler.nit b/src/compiler/separate_erasure_compiler.nit
index 233bf54..ee014f5 100644 (file)
--- a/src/compiler/separate_erasure_compiler.nit
+++ b/src/compiler/separate_erasure_compiler.nit
@@ -298,7 +298,7 @@ class SeparateErasureCompiler
                        self.header.add_decl("\};")
 
                        #Build BOX
-                       self.provide_declaration("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype});")
+                       self.provide_declaration("BOX_{c_name}", "val* BOX_{c_name}({mtype.ctype_extern});")
                        v.add_decl("/* allocate {mtype} */")
                        v.add_decl("val* BOX_{mtype.c_name}({mtype.ctype} value) \{")
                        v.add("struct instance_{c_name}*res = nit_alloc(sizeof(struct instance_{c_name}));")