http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51673
--- Comment #11 from Pawel Sikora <pluto at agmk dot net> 2012-01-10 19:56:08 UTC --- (In reply to comment #10) > Thanks guys. This looks good, and is in trunk. > > Pawel, thanks for noticing this. Please note that namespace versioning was > updated for 4.7.x to bring this experimental feature up to the final C++11 > spec. can we get this fix for upcoming 4.6.4? it doesn't touch default libstdc++ configuration and fixes bug in non-primary target. looks safe.