https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42734
--- Comment #47 from Damien Buhl (daminetreg) <damien.buhl at lecbna dot org> --- So our GCC with the problem has been configured and built by yocto-poky the following way : ``` Using built-in specs. COLLECT_GCC=arm-poky-linux-gnueabi-gcc-4.8.1 COLLECT_LTO_WRAPPER=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/libexec/armv7a-vfp-neon-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.8.1/lto-wrapper Target: arm-poky-linux-gnueabi Configured with: /home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/work-shared/gcc-4.8.1-r0/gcc-4.8.1/configure --build=i686-linux --host=i686-linux --target=arm-poky-linux-gnueabi --prefix=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr --exec_prefix=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr --bindir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi --sbindir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi --libexecdir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/libexec/armv7a-vfp-neon-poky-linux-gnueabi --datadir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/share --sysconfdir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/etc --sharedstatedir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/com --localstatedir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/var --libdir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/lib/armv7a-vfp-neon-poky-linux-gnueabi --includedir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/include --oldincludedir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/include --infodir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/share/info --mandir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux --enable-clocale=generic --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --disable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-target-optspace --enable-lto --enable-libssp --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --with-gxx-include-dir=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/ksp-0500/usr/include/c++ --with-sysroot=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/ksp-0500 --with-build-sysroot=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/ksp-0500 --enable-poison-system-directories --disable-libunwind-exceptions --with-mpfr=/home/buhldam/workspace/as521/workspace_original/product-modulo5-automation-as521/tmp/sysroots/i686-linux/usr --with-system-zlib --disable-nls Thread model: posix gcc version 4.8.1 (GCC) ``` We have now updated to 4.9.1, I'll tell you the bug still happens with 4.9.1. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42734 --- Comment #45 from Alexander Varnin --- (In reply to Damien Buhl (daminetreg) from comment #44) While given test works properly with -latomic on my installation, my application doesn't. It fails with segfault in approximately half of launches. Core dump points to some thread execution code. I suppose, it is still broken in some way. Replacing std::thread in my code with pthread_* makes it work properly. So I conclude, that this std::thread and atomic things is broken on my gcc 4.8.2 arm freescale imx53 yocto build. -- You are receiving this mail because: You are on the CC list for the bug.
