[Bug c/87192] -Warray-bounds (even =2) does not work on struct members

[bugdal at aerifal dot cx]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87192

--- Comment #7 from Rich Felker <bugdal at aerifal dot cx> ---
Nope. If the array is not in a struct, the warning works, e.g.

void bar(void *);
void foo()
{
    int a[10];
    bar(a+12);
}