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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/110556] Floating point exception with specific
 optimizations
Date: Thu, 06 Jul 2023 01:38:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110556

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to CTC from comment #6)
> (In reply to Andrew Pinski from comment #4)
> > Reducing this but it is taking a little longer as I get to the case whe=
re we
> > get undefined code on accident so I need to test it using
> > -fsanitize=3Dundefined,address also.
>=20
> For the unreduced program and optimizations, I test it with
> -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations and
> -fsanitize=3Dundefined. Both of them got floating point exception too.
>=20
> I reduced the program with -fsanitize=3Dundefined. The result doesn't get
> floating point exception. But its return value is not 0.

That is still undefined code ... as the return value of the app is not
specified in the source.=