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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/111685] Segfault while sorting on array element
 address
Date: Tue, 03 Oct 2023 19:10:13 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111685

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
And it is definitely defined incorrectly.

Adding a printf in the cmp:
        __builtin_printf("%p:%p\n", &a, &b);

Gives:
0x12072b0:0x12072b0
0x12072b4:0x12072b0
0x7ffe9afcec9c:0x12072b0
0x12072b8:0x12072b0
0x7ffe9afcec9c:0x12072b4

Which means libstdc++ is calling the cmp on a temporary and you not getting=
 the
correct thing.=