http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56284
janus at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |ice-on-valid-code --- Comment #4 from janus at gcc dot gnu.org 2013-02-11 12:17:34 UTC --- The following fixes the ICE: Index: gcc/fortran/interface.c =================================================================== --- gcc/fortran/interface.c (revision 195915) +++ gcc/fortran/interface.c (working copy) @@ -1023,6 +1023,9 @@ static gfc_try check_dummy_characteristics (gfc_symbol *s1, gfc_symbol *s2, bool type_must_agree, char *errmsg, int err_len) { + if (s1 == NULL || s2 == NULL) + return s1 == s2 ? SUCCESS : FAILURE; + /* Check type and rank. */ if (type_must_agree && !compare_type_rank (s2, s1)) {