From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 5F12E385B835; Thu, 16 Apr 2020 15:03:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5F12E385B835 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1587049411; bh=0vMeLP/9MctfrSOByRhi/FHll0+AaCs3WIs9RYfJnsA=; h=From:To:Subject:Date:From; b=BKEYWf5qdiTbolqi/wxcnR/EQ0fIsGyEq5I1NFw6sB0ZLcqTElJ5+97+QuJav0LG4 4vqSc5c+L416/DR0wIpqCfbGJ0CTgNiMsadp8gyaURIlrPvIJ1Nilkl+j0lykLENlb nqVxwRMD/9PGYd0HkCuhz3Vqss+O/kPtdvcTcWe8= From: "ola.olsson at acconeer dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/94621] New: GCC 9.2.1 segfaults when compiling file with -O3 Date: Thu, 16 Apr 2020 15:03:31 +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: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: ola.olsson at acconeer dot com 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 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Apr 2020 15:03:31 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94621 Bug ID: 94621 Summary: GCC 9.2.1 segfaults when compiling file with -O3 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: ola.olsson at acconeer dot com Target Milestone: --- Hi, I compiled the c-file version of the attached file with: $ gcc -v -save-temps -fsanitize=3Dundefined -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -Wall -Wextra -O3 -c segfault.c > gcc_i= nfo 2>&1 The issue does not happen if I use -O0. $ cat gcc_info=20 Using built-in specs. COLLECT_GCC=3Dgcc OFFLOAD_TARGET_NAMES=3Dnvptx-none:hsa OFFLOAD_TARGET_DEFAULT=3D1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion=3D'Ubuntu 9.2.1-9ubu= ntu2' --with-bugurl=3Dfile:///usr/share/doc/gcc-9/README.Bugs --enable-languages=3Dc,ada,c++,go,brig,d,fortran,objc,obj-c++,gm2 --prefix= =3D/usr --with-gcc-major-version-only --program-suffix=3D-9 --program-prefix=3Dx86_64-linux-gnu- --enable-shared --enable-linker-build-= id --libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix --libdir=3D/usr/lib --enable-nls --enable-bootstrap --enable-clocale=3Dgnu --enable-libstdcxx-debug --enable-libstdcxx-time=3Dyes --with-default-libstdcxx-abi=3Dnew --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-= zlib --with-target-system-zlib=3Dauto --enable-multiarch --disable-werror --with-arch-32=3Di686 --with-abi=3Dm64 --with-multilib-list=3Dm32,m64,mx32 --enable-multilib --with-tune=3Dgeneric --enable-offload-targets=3Dnvptx-no= ne,hsa --without-cuda-driver --enable-checking=3Drelease --build=3Dx86_64-linux-gnu --host=3Dx86_64-linux-gnu --target=3Dx86_64-linux-gnu Thread model: posix gcc version 9.2.1 20191008 (Ubuntu 9.2.1-9ubuntu2)=20 COLLECT_GCC_OPTIONS=3D'-v' '-save-temps' '-fsanitize=3Dundefined' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-Wal= l' '-Wextra' '-O3' '-c' '-mtune=3Dgeneric' '-march=3Dx86-64' /usr/lib/gcc/x86_64-linux-gnu/9/cc1 -E -quiet -v -imultiarch x86_64-linux-= gnu segfault.c -mtune=3Dgeneric -march=3Dx86-64 -Wall -Wextra -fsanitize=3Dunde= fined -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -O3 -fpch-preprocess -fasynchronous-unwind-tables -fstack-protector-strong -Wformat-security -fstack-clash-protection -fcf-protection -o segfault.i ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-linux-gnu/9/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/9/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. COLLECT_GCC_OPTIONS=3D'-v' '-save-temps' '-fsanitize=3Dundefined' '-fno-strict-aliasing' '-fwrapv' '-fno-aggressive-loop-optimizations' '-Wal= l' '-Wextra' '-O3' '-c' '-mtune=3Dgeneric' '-march=3Dx86-64' /usr/lib/gcc/x86_64-linux-gnu/9/cc1 -fpreprocessed segfault.i -quiet -dump= base segfault.c -mtune=3Dgeneric -march=3Dx86-64 -auxbase segfault -O3 -Wall -We= xtra -version -fsanitize=3Dundefined -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -fasynchronous-unwind-tables -fstack-protector-strong -Wformat-security -fstack-clash-protection -fcf-protection -o segfault.s GNU C17 (Ubuntu 9.2.1-9ubuntu2) version 9.2.1 20191008 (x86_64-linux-gnu) compiled by GNU C version 9.2.1 20191008, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.21-GMP GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 GNU C17 (Ubuntu 9.2.1-9ubuntu2) version 9.2.1 20191008 (x86_64-linux-gnu) compiled by GNU C version 9.2.1 20191008, GMP version 6.1.2, MPFR version 4.0.2, MPC version 1.1.0, isl version isl-0.21-GMP GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 Compiler executable checksum: dd54e5384b34908287640134d9f8a49c during IPA pass: inline segfault.c: In function =E2=80=98get_element=E2=80=99: segfault.c:8:5: internal compiler error: Segmentation fault 8 | int get_element(a_struct *m, int row, int col) | ^~~~~~~~~~~ Please submit a full bug report, with preprocessed source if appropriate. See for instructions.=