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From: "vincent-gcc at vinc17 dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/109578] fail to remove dead code due to division by
 zero
Date: Thu, 20 Apr 2023 21:26:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109578

--- Comment #2 from Vincent Lef=C3=A8vre <vincent-gcc at vinc17 dot net> ---
(In reply to Andrew Pinski from comment #1)
> We don't removing code before undefined behavior ...
> That is GCC does not know that printf  does not have side effects.

Then GCC is incorrect in bug 29968, because it does the division *before* t=
he
printf.=