Commit 3edef5a19b5c0f30381ae6fe01c3370ded37f6ca

Behdad Esfahbod 2018-07-17T10:50:01

Revert "Implement C++11-style GCC builtin atomic ops" This reverts commit 21fa170f0bfb0109c506ed17f5aff8b062564ffa. Is crashing. Oops.