https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93767
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-02-17
CC| |jakub at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Version|unknown |10.0
Target Milestone|--- |8.4
Summary|wrong code at -O3 on |[8/9/10 Regression] wrong
|x86_64-linux-gnu |code at -O3 on
| |x86_64-linux-gnu since
| |r8-6064
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly tweaked, still -O3:
int
main ()
{
int a[10], b;
for (b = 6; b >= 3; b--)
{
a[b] = 1;
a[b + 2] = a[3];
}
if (a[5] != 1)
__builtin_abort ();
return 0;
}
And I can confirm it started with
r8-6064-ga57776a11369621f9e9e8a8a3db6cb406c8bf27b
