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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/115019] wraparound bug with with -O3 and int128
Date: Fri, 10 May 2024 01:37:40 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115019

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
                URL|https://godbolt.org/z/be37n |
                   |7Mz3                        |
               Host|x86_64-pc-linux-gnu         |
              Build|x86_64-pc-linux-gnu         |
             Status|UNCONFIRMED                 |RESOLVED
             Target|x86_64-pc-linux-gnu         |

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is an undefined behavior with signed integer overflow. Did you try with
-fsanitize=3Dundefined as requested by the bug reporting page?=