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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/115129] [12/13/14/15 regression] ICE on recursive realloc
 call with LTO
Date: Fri, 17 May 2024 08:03:17 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: lto
X-Bugzilla-Version: 14.1.0
X-Bugzilla-Keywords: ice-on-invalid-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115129

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unknown                     |14.1.0
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
   Target Milestone|---                         |12.4
   Last reconfirmed|                            |2024-05-17

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

Setting value number of p_4 to 0B (changed)
Value numbering stmt =3D realloc (p_4, s_5(D));

...

  <bb 3> [local count: 8687547538]:
  __builtin_malloc (s_5(D));

but virtual operands are not updated.  Somewhere we fold this and break thi=
ngs
this way.  gimple_fold_builtin_realloc likely.=