From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 4998C3858C98; Sat, 2 Dec 2023 18:43:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4998C3858C98 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1701542605; bh=m4la3smnKwjglkiD+Uj0iptiUzDdnKFlzCRhw+osZUc=; h=From:To:Subject:Date:From; b=VrIz48FIAOcxcuBQF9ch0xqaomOzYhY9I2CMGc7o7P11F9Gq6gU/Ru7iRMwquExav V9jEoIhXiYedVhsLN1omxvnJnOZ8kbqZSa4BSOojgzyXTei42sUrOZK/t9uJCxMd3R B62dz6ZtVhDym0+x6bF703W0EPlkNbrMSxRqEd9Q= From: "zhendong.su at inf dot ethz.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/112827] New: ICE on valid code at -O1 on x86_64-linux-gnu: Segmentation fault Date: Sat, 02 Dec 2023 18:43:24 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: zhendong.su at inf dot ethz.ch 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=3D112827 Bug ID: 112827 Summary: ICE on valid code at -O1 on x86_64-linux-gnu: Segmentation fault Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: zhendong.su at inf dot ethz.ch Target Milestone: --- This appears to be a recent regression as it does not reproduce with 13.2.= =20 Compiler Explorer: https://godbolt.org/z/4EhdjPE6o [507] % gcctk -v Using built-in specs. COLLECT_GCC=3Dgcctk COLLECT_LTO_WRAPPER=3D/local/home/suz/suz-local/software/local/gcc-trunk/bi= n/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --disable-bootstrap --enable-checking=3Dyes --prefix=3D/local/suz-local/software/local/gcc-trunk --enable-sanitizers --enable-languages=3Dc,c++ --disable-werror --enable-mu= ltilib Thread model: posix Supported LTO compression algorithms: zlib gcc version 14.0.0 20231202 (experimental) (GCC)=20 [508] %=20 [508] % gcctk -O1 small.c during GIMPLE pass: sccp small.c: In function =E2=80=98main=E2=80=99: small.c:2:5: internal compiler error: Segmentation fault 2 | int main() { | ^~~~ 0x105e273 crash_signal ../../gcc-trunk/gcc/toplev.cc:316 0x1149492 gimple_bb(gimple const*) ../../gcc-trunk/gcc/gimple.h:1908 0x1149492 instantiate_scev_name ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2263 0x1149492 instantiate_scev_r ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2637 0x1149dee instantiate_scev(edge_def*, loop*, tree_node*) ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2719 0x114bae9 instantiate_parameters(loop*, tree_node*) ../../gcc-trunk/gcc/tree-scalar-evolution.h:64 0x114bae9 simplify_peeled_chrec ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1344 0x11488a6 analyze_evolution_in_loop ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1455 0x11488a6 interpret_loop_phi ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1587 0x11488a6 analyze_scalar_evolution_1 ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1975 0x114849a analyze_scalar_evolution_1 ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1958 0x1148e24 analyze_scalar_evolution(loop*, tree_node*) ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039 0x11483ee interpret_condition_phi ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1611 0x11483ee analyze_scalar_evolution_1 ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1977 0x1148e24 analyze_scalar_evolution(loop*, tree_node*) ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039 0x114abd2 interpret_rhs_expr ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1641 0x1148579 interpret_gimple_assign ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1919 0x1148579 analyze_scalar_evolution_1 ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1970 0x1148e24 analyze_scalar_evolution(loop*, tree_node*) ../../gcc-trunk/gcc/tree-scalar-evolution.cc:2039 0x114abd2 interpret_rhs_expr ../../gcc-trunk/gcc/tree-scalar-evolution.cc:1641 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See for instructions. [509] %=20 [509] % cat small.c int a, b, c, d, e; int main() { for (; c; c++) { for (a =3D 0; a < 2; a++) ; for (; b; b++) { e =3D d; d =3D a; } } return 0; }=