https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80392
janus at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |janus at gcc dot gnu.org --- Comment #3 from janus at gcc dot gnu.org --- We already have a check to prevent this kind of infinite recursion (as shown in comment #1) in gfc_get_derived_type, however it is apparently only working for TYPEs, but not for CLASSes. This patch should fix it (and makes comment #0 and comment #2 compile fine with trunk): Index: gcc/fortran/trans-types.c =================================================================== --- gcc/fortran/trans-types.c (revision 246933) +++ gcc/fortran/trans-types.c (working copy) @@ -2617,9 +2617,10 @@ gfc_get_derived_type (gfc_symbol * derived, int co the same as derived, by forcing the procedure pointer component to be built as if the explicit interface does not exist. */ if (c->attr.proc_pointer - && ((c->ts.type != BT_DERIVED && c->ts.type != BT_CLASS) - || (c->ts.u.derived - && !gfc_compare_derived_types (derived, c->ts.u.derived)))) + && (c->ts.type != BT_DERIVED || (c->ts.u.derived + && !gfc_compare_derived_types (derived, c->ts.u.derived))) + && (c->ts.type != BT_CLASS || (CLASS_DATA (c)->ts.u.derived + && !gfc_compare_derived_types (derived, CLASS_DATA (c)->ts.u.derived)))) field_type = gfc_get_ppc_type (c); else if (c->attr.proc_pointer && derived->backend_decl) { Regtesting now ...