http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50933
--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-11-02 08:30:20 UTC --- Untested patch: --- a/gcc/fortran/interface.c +++ b/gcc/fortran/interface.c @@ -405,7 +405,7 @@ gfc_compare_derived_types (gfc_symbol *derived1, gfc_symbol *derived2) return 1; /* Compare type via the rules of the standard. Both types must have - the SEQUENCE attribute to be equal. */ + the SEQUENCE or BIND(C) attribute to be equal. */ if (strcmp (derived1->name, derived2->name)) return 0; @@ -414,7 +414,8 @@ gfc_compare_derived_types (gfc_symbol *derived1, gfc_symbol *derived2) || derived2->component_access == ACCESS_PRIVATE) return 0; - if (derived1->attr.sequence == 0 || derived2->attr.sequence == 0) + if (!(derived1->attr.sequence && derived2->attr.sequence) + && !(derived1->attr.is_bind_c && derived2->attr.is_bind_c)) return 0; dt1 = derived1->components;