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From: "hanicka at hanicka dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/108517] New: std::sort of empty range yield "warning:
 'this' pointer is null"
Date: Tue, 24 Jan 2023 12:01:42 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 13.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: hanicka at hanicka dot net
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108517

            Bug ID: 108517
           Summary: std::sort of empty range yield "warning: 'this'
                    pointer is null"
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hanicka at hanicka dot net
  Target Milestone: ---

Bug in GCC 11.1-13 (including trunk)

https://compiler-explorer.com/z/EEjeaKfv7

I couldn't minimize it further. Lowering optimization level will make the
warning gone.=