http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59448
--- Comment #11 from algrant at acm dot org --- Where do you get that this is racy if the access to data is not atomic? By design, release/acquire and release/consume sequences don't require wholesale changes to the way the data payload (in the general case, multiple fields within a structure) is first constructed and then used. 1.10#13 makes clear that as a result of the intra-thread sequencing between atomic and non-atomic operations (1.9#14), and the inter-thread ordering between atomic operations (1.10 various), there is a resulting ordering on operations to "ordinary" (sic) objects. Please see the references to the C++ standard in the source example, for the chain of reasoning here.