2012-02-10 Benjamin Kosnik <bkoz@redhat.com>

2012-02-10  Benjamin Kosnik  <bkoz@redhat.com>
            Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/51798 continued.
	* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Use __atomic_*
	builtins instead of __sync_* builtins for atomic functionality.
	* include/bits/shared_ptr_base.h: Same.
	* include/parallel/compatibility.h: Same.
	* include/profile/impl/profiler_state.h: Same.
	* include/tr1/shared_ptr.h: Same.
	* libsupc++/eh_ptr.cc: Same.
	* libsupc++/eh_throw.cc: Same.
	* libsupc++/eh_tm.cc: Same.
	* libsupc++/guard.cc: Same.
	* configure: Regenerated.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust line numbers.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184110 138bc75d-0d04-0410-961f-82ee72b054a4