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From: "gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/108449] New: [13 Regression] ICE in eliminate_unnecessary_stmts, at tree-ssa-dce.cc:1512
Date: Wed, 18 Jan 2023 18:22:00 +0000	[thread overview]
Message-ID: <bug-108449-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108449

            Bug ID: 108449
           Summary: [13 Regression] ICE in eliminate_unnecessary_stmts, at
                    tree-ssa-dce.cc:1512
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20220904 and 20220911, at -O1+ :


$ cat z1.c
static int vfork();
void f() { vfork(); }


$ gcc-13-20230115 -c z1.c -O2
z1.c:1:12: warning: 'vfork' used but never defined
    1 | static int vfork();
      |            ^~~~~
during GIMPLE pass: cddce
z1.c: In function 'f':
z1.c:2:1: internal compiler error: in eliminate_unnecessary_stmts, at
tree-ssa-dce.cc:1512
    2 | void f() { vfork(); }
      | ^~~~
0xe0f0dc eliminate_unnecessary_stmts
        ../../gcc/tree-ssa-dce.cc:1512
0xe108bf perform_tree_ssa_dce
        ../../gcc/tree-ssa-dce.cc:1945
0xe11e55 tree_ssa_cd_dce
        ../../gcc/tree-ssa-dce.cc:1986
0xe11e55 execute
        ../../gcc/tree-ssa-dce.cc:2069

             reply	other threads:[~2023-01-18 18:22 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-18 18:22 gscfq@t-online.de [this message]
2023-01-18 19:14 ` [Bug tree-optimization/108449] " pinskia at gcc dot gnu.org
2023-01-19  7:43 ` rguenth at gcc dot gnu.org
2023-01-19  7:46 ` rguenth at gcc dot gnu.org
2023-01-23  7:27 ` cvs-commit at gcc dot gnu.org
2023-01-23  7:28 ` rguenth at gcc dot gnu.org
2023-01-25  9:20 ` marxin at gcc dot gnu.org

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