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From: "yann at droneaud dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/110292] undefined value due to strict aliasing
 without warning
Date: Sat, 17 Jun 2023 05:46:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110292

--- Comment #5 from Yann Droneaud <yann at droneaud dot fr> ---
Hi,

Thanks a lot for the quick analysis of my issue.

(In reply to Andrew Pinski from comment #4)
> Note -Wstrict-aliasing=3D1 actually does warn:

OK, and -Wall enables -Wstrict-aliasing which defaults to -Wstrict-aliasing=
=3D3,
I'm sorry I haven't tried to use lower values ...

https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wstrict-alias=
ing

(In reply to Andrew Pinski from comment #2)
> aliasing violations are known not to be warned about nor have a runtime
> sanitizer either.

Is there any other tool that would reliably detect such issues ?

Regards=