https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111583
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2023-09-25
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
The problem is a latent bug in ldist.
It turns:
```
<bb 5> [local count: 955630224]:
a_5 = a_4 + 1;
a.4_6 = (char *) a_4;
*a.4_6 = 0;
<bb 6> [local count: 1073741824]:
# a_4 = PHI <a_2(4), a_5(5)>
# j_7 = PHI <j_3(4), j_8(5)>
j_8 = j_7 + 18446744073709551615;
if (j_7 != 0)
goto <bb 5>; [89.00%]
else
goto <bb 7>; [11.00%]
```
Into:
```
a_2 = (long int) k_1(D);
j_3 = (long unsigned int) k_1(D);
_23 = (sizetype) k_1(D);
_25 = (char *) a_2;
__builtin_memset (_25, 0, _23);
```
Which then basically says k!=0 as _25 can't be a null pointer.
