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From: "tnfchris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113144] [14 regression] ICE when building
 dpkg-1.21.15 in verify_dominators (error: dominator of 9 should be 48, not
 12)
Date: Tue, 09 Jan 2024 22:21:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113144

--- Comment #15 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
(In reply to Martin Jambor from comment #13)
> The testcase below segfaults when compiled with master configured with
> release checking.  However, it is very likely affected by this bug (it
> fails with checking compiler like testcases for this issue do) and so
> I did not want to file a new bug for a testcase where we know we're
> currently having problems keeping dominance information.
>=20
> Tamar, after you fix this issue, can you please check if the following
> segfaults when compiled with -std=3Dgnu99 -fpermissive -fgnu89-inline
> -Ofast -march=3Dznver2 -fprofile-generate -S ?
>=20

yeah, with my current patches it works fine:

> ./install/bin/gcc segf.c -std=3Dgnu99 -fpermissive -fgnu89-inline -Ofast =
-march=3Dznver2 -fprofile-generate -S -w; and echo $status
0

I'll commit the bulk tomorrow. Thanks for the testcase!=