[Bug libstdc++/51026] [4.7 Regression] Bootstrap failure due to libstdc++ on x86_64-darwin11

[amacleod at redhat dot com]

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.