Extended Description

Currently, the CO-RE offset relocation does not work
if any struct/union member or array element is a typedef.
For example,

typedef const int arr_t[7];
struct input {
arr_t a;
};
func(...) {
struct input *in = ...;
... __builtin_preserve_access_index(&in->a[1]) ...
}

The BPF backend calculated default offset is 0 while
4 is the correct answer. Similar issues exist for struct/union
typedef's.

Current implementation does not handle typedef properly.