http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51026
--- Comment #2 from Andrew Macleod <amacleod at redhat dot com> 2011-11-08 13:32:51 UTC --- Its fixed by the revert in that changelog to atomic_base.h. The problem is there is a missing dependency in the makefiles, which is how it got through in the first place.. and incremental bootstrap failed to show an issue. if you touch libstdc++-v3/src/*.cc the build should succeed. OR start a scratch build with that source.
