[Bug sanitizer/109980] Bogus Wstringop-overflow and Wstringop-overread warnings when attribute `access` is applied to struct arg

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109980

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-05-27

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Note the -O2 difference just comes from inlining.
So you could get away with just this for getting the warning:
```
typedef struct{
    int value, decoy;
} S;

[[gnu::access(read_write, 1)]]
int S_rw(S *self);

[[gnu::access(read_only, 1)]]
int S_ro(const S *self);

int S_test(S *tmps){
    return tmps[1].value && S_rw(tmps + 1) && S_ro(tmps + 1);
}
```