From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13382 invoked by alias); 31 Aug 2011 08:27:12 -0000 Received: (qmail 13313 invoked by uid 22791); 31 Aug 2011 08:27:06 -0000 X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_BJ,TW_CX,TW_DC,TW_GX X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 31 Aug 2011 08:26:52 +0000 From: "jsloth at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/50247] New: #pragma pack std::set segfault Date: Wed, 31 Aug 2011 08:32:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: jsloth at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2011-08/txt/msg02510.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50247 Bug #: 50247 Summary: #pragma pack std::set segfault Classification: Unclassified Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: major Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: jsloth@gmail.com Created attachment 25148 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25148 preprocessed file (with 4.6.1) When using #pragma pack(1) following code triggers a segfault in stl_tree.h. When not using #pragma pack, there is no segfault. Simple testcase: #pragma pack(1) #include class A { public: bool operator< ( const A& y) const { return this->i < y.i; } int i; A(int j) { this->i = j; } }; int main(void) { std::set aSet; A a(1); aSet.insert(a); return 0; } compiled with: g++ test.cpp Code g++ -v: Using built-in specs. COLLECT_GCC=g++-4.6 COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.6.0-3~ppa1' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-multiarch --with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib/x86_64-linux-gnu --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.6.1 20110409 (prerelease) (Ubuntu 4.6.0-3~ppa1) This also occured with g++ 4.5.2 (x86_64) and with g++ 4.5.3 (arm) g++ 4.5.2 (x86_64): g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.5.2-8ubuntu4' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.5 --enable-shared --enable-multiarch --with-multiarch-defaults=x86_64-linux-gnu --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib/x86_64-linux-gnu --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib/x86_64-linux-gnu --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-gold --enable-ld=default --with-plugin-ld=ld.gold --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4) g++ 4.5.3 (arm): Using built-in specs. COLLECT_GCC=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-g++ COLLECT_LTO_WRAPPER=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr/libexec/gcc/arm-unknown-linux-uclibcgnueabi/4.5.3/lto-wrapper Target: arm-unknown-linux-uclibcgnueabi Configured with: /home/jsn/rtx4088git/toolchain_and_rootfs/output/toolchain/gcc-4.5.3/configure --prefix=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=arm-unknown-linux-uclibcgnueabi --enable-languages=c,c++ --with-sysroot=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr/arm-unknown-linux-uclibcgnueabi/sysroot --with-build-time-tools=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr/arm-unknown-linux-uclibcgnueabi/bin --disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp --disable-multilib --disable-tls --enable-shared --with-gmp=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr --with-mpfr=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr --with-mpc=/home/jsn/rtx4088git/toolchain_and_rootfs/output/host/usr --disable-nls --enable-threads --disable-decimal-float --with-float=soft --with-abi=aapcs-linux --with-arch=armv5te --with-tune=arm926ej-s --with-pkgversion='Buildroot 2011.08-rc1-ged13158-dirty' --with-bugurl=http://bugs.buildroot.net/ Thread model: posix gcc version 4.5.3 (Buildroot 2011.08-rc1-ged13158-dirty)