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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113271] [Regression] Wrong code at -O1/2/3
 since GCC-9 (could be due to wrong optimization)
Date: Mon, 08 Jan 2024 12:16:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113271

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Garbage in, garbage out.
This is UB, as can be seen if you compile with -fsanitize=3Dundefined:
runtime error: negation of -2147483648 cannot be represented in type 'int';
cast to an unsigned type to negate this value to itself=