Compiled C++ programs segfault on STL operations such as next_permutation() I've found it when working with vector<int> - the program crashes at next_permutation(b.begin(), b.end()); When doing next_permutation(a, a+2); where a is an ordinary array, everything is OK. I'm sure the source code is ok, I've tested it on other systems and it doesn't crash. Reproducible: Always Steps to Reproduce: 1. 2. 3. See the forum topic on this issue: http://forums.gentoo.org/viewtopic-t-340971.html What's interesting, the code is generated correctly with -O flag, but when I use a set of separate compiler flags, noted as equivalent to -O in `man gcc`, it still crashes. Output from g++ -v: Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/specs Configured with: /multimedia/portage_temp/portage/gcc-3.3.5.20050130-r1/work/gcc-3.3.5/configure --enable-version-specific-runtime-libs --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3.5-20050130 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3.5-20050130 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3.5-20050130/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3.5-20050130/info --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/include/g++-v3 --host=i686-pc-linux-gnu --disable-altivec --disable-nls --with-system-zlib --disable-checking --disable-werror --disable-libunwind-exceptions --disable-multilib --disable-libgcj --enable-languages=c,c++ --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu Thread model: posix gcc version 3.3.5-20050130 (Gentoo Hardened 3.3.5.20050130-r1, ssp-3.3.5.20050130-1, pie-8.7.7.1) Output from emerge info: Portage 2.0.51.19 (default-linux/x86/2005.0, gcc-3.3.5-20050130, glibc-2.3.4.20041102-r1, 2.6.11.9 i686) ================================================================= System uname: 2.6.11.9 i686 mobile AMD Athlon(tm) XP2400+ Gentoo Base System version 1.4.16 Python: dev-lang/python-2.3.5 [2.3.5 (#1, May 23 2005, 10:01:30)] dev-lang/python: 2.3.5 sys-apps/sandbox: [Not Present] sys-devel/autoconf: 2.59-r6, 2.13 sys-devel/automake: 1.7.9-r1, 1.8.5-r3, 1.5, 1.4_p6, 1.6.3, 1.9.5 sys-devel/binutils: 2.15.92.0.2-r7 sys-devel/libtool: 1.5.16 virtual/os-headers: 2.6.8.1-r2 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-mcpu=athlon-xp -march=athlon-xp -mmmx -m3dnow -msse -O3 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-mcpu=athlon-xp -march=athlon-xp -mmmx -m3dnow -msse -O3 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://gentoo.prz.rzeszow.pl http://212.219.247.10/sites/www.ibiblio.org/gentoo/ http://212.219.247.12/sites/www.ibiblio.org/gentoo/ http://212.219.247.11/sites/www.ibiblio.org/gentoo/ http://212.219.247.13/sites/www.ibiblio.org/gentoo/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/multimedia/portage_temp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 #profile 3dnow X Xaw3d a52 aac aalib acpi alsa apache2 audiofile avi bash-completion bcmath bindist bitmap-fonts bonobo bzlib cdb cdparanoia cdr co cpdflib crypt cscope ctype cups dbase dio directfb divx4linux dvd dvdread emboss encode ethereal evo exif expat fbcon ffmpeg fftw flac foomaticdb ftp geoip ggi gif ginac glut gmp gnome gnutls gpm gstreamer gtk gtk2 gtkhtml hal hardened hardenedphp howl iconv imagemagick imap imlib ipv6 jabber jack java jest? jikes jpeg junit kdeenablefinal kerberos krb4 lcms ldap lesstif libcaca libedit libgda libwww lm_sensors mad matroska memlimit mhash mikmod mime mmap mmx mng mozilla mp3 mpeg mpi nas ncurses neXt netcdf nptl offensive ogg oggvorbis openal opengl osc pam pcmcia pdflib pic png portaudio posix ppds quicktime readline recode samba sasl sdl sharedmem shorten slang slp sndfile snmp sockets sox speex spell sse ssl svg svga symlink sysvipc szip tcpd theora threads tidy tiff to truetype truetype-fonts type1-fonts unicode usb v4l vcd videos vorbis wifi win32codecs wmf wxwindows xface xml xml2 xmms xosd xpm xprint xsl xv xvid zlib video_cards_radeon userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
hrmm vector.. This has come up before. Oddly this code when compiled with ssp-all and -O0 will cause a segfault but only on glibc hosts other libc's seem to be fine. #include <vector> #include <algorithm> int main() { std::vector<long> i; i.push_back(4); i.push_back(3); i.push_back(2); i.push_back(1); std::sort(i.begin(), i.end()); } For now can you try to back your ssp aggressions down or bring of optimization up. CFLAGS="-stuff" CXXFLGAS="${CFLAGS} -fno-stack-protector-all" or CXXFLAGS="${CFLAGS} -O[1-3]" The profile itself uses -O2
No feedback from user. Resolving as UPSTREAM as vector has been a problem for a while now and we are not likely to see a fix till >=gcc-4.1
