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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/111446] New: genmatch should warn/error out on
 recusive match patterns
Date: Sun, 17 Sep 2023 18:27:31 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: internal-improvement
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111446

            Bug ID: 111446
           Summary: genmatch should warn/error out on recusive match
                    patterns
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: internal-improvement
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: pinskia at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

After PR 111442 and PR 111435, I figure we should warn (or error out) about=
 the
case where a match recusively uses itself as that will cause issues with VN=
 and
almost always generate an infinite loop.=