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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109491] [11/12 Regression] Segfault in
 tree-ssa-sccvn.cc:expressions_equal_p()
Date: Mon, 17 Apr 2023 09:14:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109491

--- Comment #18 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:ba02c6706cc502ee64b9c5d32b08409c44fe967d

commit r12-9413-gba02c6706cc502ee64b9c5d32b08409c44fe967d
Author: Richard Biener <rguenther@suse.de>
Date:   Thu Apr 13 14:09:30 2023 +0200

    tree-optimization/109491 - ICE in expressions_equal_p

    At some point I elided the NULL pointer check in expressions_equal_p
    because it shouldn't be necessary not realizing that for example
    TARGET_MEM_REF has optional operands we cannot substitute with
    something non-NULL with the same semantics.  The following does the
    simple thing and restore the check removed in r11-4982.

            PR tree-optimization/109491
            * tree-ssa-sccvn.cc (expressions_equal_p): Restore the
            NULL operands test.

    (cherry picked from commit a37783de23c067d6a26374ff29c014e49604035c)=