http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51296
--- Comment #6 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2011-11-25 14:12:25 UTC --- > --- Comment #5 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot > Uni-Bielefeld.DE> 2011-11-25 14:06:10 UTC --- >> --- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-11-24 >> 20:30:43 UTC --- >> What does this program do, compiled with -std=c++11 -pthread ? > > I get > > Assertion failed: false, file thread.cc, line 21 > IOT/Abort trap I've run it under gdb (which has massive problems on that platform right now), and it seems that in alpha-dec-osf5.1b/libstdc++-v3/include/mutex:172 ____gthread_mutex_lock(&_M_mutex) returns EINVAL. Rainer