https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65697
--- Comment #40 from mwahab at gcc dot gnu.org --- (In reply to Andrew Macleod from comment #25) > Documentation needs updating for sure... The rules have changed under us > since originally SEQ_CST and sync were intended to be the same thing... > Guess I shouldn't have tied our horse to the C++11 cart :-) I've submitted a patch to try to update the __atomics documentation: https://gcc.gnu.org/ml/gcc-patches/2015-04/msg01025.html.