https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95978
--- Comment #3 from anlauf at gcc dot gnu.org --- The obvious patch diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c index ac1f63f66e0..f38def4c291 100644 --- a/gcc/fortran/decl.c +++ b/gcc/fortran/decl.c @@ -728,7 +728,7 @@ gfc_match_data (void) gfc_constructor *c; c = gfc_constructor_first (new_data->value->expr->value.constructor); for (; c; c = gfc_constructor_next (c)) - if (c->expr->ts.type == BT_BOZ) + if (c->expr && c->expr->ts.type == BT_BOZ) { gfc_error ("BOZ literal constant at %L cannot appear in a " "structure constructor", &c->expr->where); leads to: z1.f90:5:19: 5 | data c /t(1)/ | 1 Error: Unexpected DATA statement at (1)