[Bug c++/84816] [7.2.0/8.0.1 x86_64] Incorrect code generation if signed overflow

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84816

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ebotcazou at gcc dot gnu.org

--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Yes, but code generation incorrect. It's not runtime yet.

The criterion is as follows: does the code invoke undefined behavior when
executed in the abstract machine specified by the C standard?  If so, then the
compiler is allowed to generate object code that does anything, including
playing some music or erasing the hard drive; here it generates an infinite
loop and that's OK.