https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78618
--- Comment #21 from janus at gcc dot gnu.org --- (In reply to janus from comment #20) > So I guess one should find out where the symbol '__convert_s4_s1' obtains > its charlen and prevent that from happening ... I think that this is accomplished by the following: Index: gcc/fortran/intrinsic.c =================================================================== --- gcc/fortran/intrinsic.c (revision 243224) +++ gcc/fortran/intrinsic.c (working copy) @@ -5055,11 +5055,13 @@ gfc_convert_chartype (gfc_expr *expr, gfc_typespec new_expr->value.function.name = sym->lib_name; new_expr->value.function.isym = sym; new_expr->where = old_where; + new_expr->ts = *ts; new_expr->rank = rank; new_expr->shape = gfc_copy_shape (shape, rank); gfc_get_ha_sym_tree (sym->name, &new_expr->symtree); - new_expr->symtree->n.sym->ts = *ts; + new_expr->symtree->n.sym->ts.type = ts->type; + new_expr->symtree->n.sym->ts.kind = ts->kind; new_expr->symtree->n.sym->attr.flavor = FL_PROCEDURE; new_expr->symtree->n.sym->attr.function = 1; new_expr->symtree->n.sym->attr.elemental = 1; Could someone please check if that helps?