https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101832
--- Comment #10 from qinzhao at gcc dot gnu.org ---
shall we support the following multi-level nesting?
struct A { int len; char data[]; };
struct B { int n; struct A a; };
struct C { int m, struct B b; };
struct C *outer;
__builtin_object_size (&outer->b, 1);
__builtin_object_size (&outer->b.a, 1);
with the current GCC:
__builtin_object_size(&wrap->b, 1) == 8
__builtin_object_size(&wrap->b.a, 1) == 4
We expect both are -1 since the innermost structure A has a trailing flexible
array member.
