https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71856
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Tue Jul 19 22:16:23 2016 New Revision: 238498 URL: https://gcc.gnu.org/viewcvs?rev=238498&root=gcc&view=rev Log: Do not define _GLIBCXX_ASSERTIONS in Parallel Mode PR libstdc++/71856 * include/bits/c++config (_GLIBCXX_ASSERTIONS): Define to 1 not empty. * include/parallel/balanced_quicksort.h: Include <unistd.h> for sleep. * include/parallel/compiletime_settings.h (_GLIBCXX_ASSERTIONS): Do not define here. Modified: branches/gcc-6-branch/libstdc++-v3/ChangeLog branches/gcc-6-branch/libstdc++-v3/include/bits/c++config branches/gcc-6-branch/libstdc++-v3/include/parallel/balanced_quicksort.h branches/gcc-6-branch/libstdc++-v3/include/parallel/compiletime_settings.h