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From: "andi-gcc at firstfloor dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/99578] gcc-11 -Warray-bounds or -Wstringop-overread
 warning when accessing a pointer from integer literal
Date: Sat, 01 May 2021 15:08:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99578

Andi Kleen <andi-gcc at firstfloor dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |andi-gcc at firstfloor dot=
 org

--- Comment #12 from Andi Kleen <andi-gcc at firstfloor dot org> ---
It looks to me separate bugs are mixed together here.

For example I looked at the preallocate_pmd warning again and I don't think
there is any union there. Also I noticed that when I replace the *foo[N] wi=
th
**foo it disappears. So I think that is something different.

So there seem to be instances where such warnings happen without union memb=
ers.
Perhaps that one (and perhaps some others) need to be reanalyzed.

I also looked at the intel_pm.c and I think that one is a real kernel bug,
where the field accessed is really too small. I'll submit a patch for that.=