https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65945
--- Comment #12 from James Y Knight <foom at fuhm dot net> --- Since this would at least theoretically be a c++11 ABI change -- although it seems likely not to impact the ABI of most actual software -- it seems like it'd be a really good idea to fix it ASAP, before too many people start depending on GCC 5.1's C++11 ABI.
