http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59463
Mike Spear <spear at cse dot lehigh.edu> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |spear at cse dot lehigh.edu --- Comment #1 from Mike Spear <spear at cse dot lehigh.edu> --- Bug appears to be triggered by the following simpler testcase: 1 - Put the following line in an empty file: #include <thread> 2 - Compile g++ foo.cc -std=c++11 Bug is appearing for following build from trunk (trunk is a few days old): g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/proj/spear0/sw/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /proj/spear1/admin/src/gcc_trunk/configure --prefix=/proj/spear0/sw --with-gmp=/proj/spear0/sw --with-mpc=/proj/spear0/sw --with-mpfr=/proj/spear0/sw --enable-languages=c,c++,lto --enable-lto --enable-multilib Thread model: posix gcc version 4.9.0 20131204 (experimental) (GCC) I'll update trunk and check if the bug remains.