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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/96564] New maybe use of uninitialized variable
 warning since GCC >10
Date: Tue, 11 Aug 2020 09:27:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96564

--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
I think there are duplicates about the fact that while gcc knows that a and=
 x
cannot alias (if you read *x, write to *a, then read from *x again, gcc reu=
ses
the first value), it does not use that information to fold comparisons betw=
een
x and a.=