From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 4A5523858D28; Wed, 18 Jan 2023 18:22:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4A5523858D28 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1674066120; bh=pznakHD+wggGXqWf8OjXQ4xSz2baVzAVUQMsDxwSE5c=; h=From:To:Subject:Date:From; b=RjqNGjDHnQSl+kPFePIoTyJAZT6nsKhmjJSrAOFILCk7gqmSHkMU4nHegYAJIlb8Q oqiMQs3G8fmJXrBR+feO7Bc/f6FrdH32KQNOQTsrZZkwmPFxqC4xLOIaOqhF/GULti s/LzQJBQb+P8nYHI+McPG2fCxa8Qe9KKGSMAzFtc= From: "gscfq@t-online.de" 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 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 13.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: gscfq@t-online.de X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108449 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=