+2010-12-04 Jonathan Wakely <jwakely.gcc@gmail.com>
+
+ * include/std/mutex (try_lock, __try_lock_impl): Fix.
+ (lock): Implement using __try_lock_impl.
+ * testsuite/30_threads/try_lock/2.cc: Fix logic.
+ * testsuite/30_threads/try_lock/4.cc: New.
+ * testsuite/30_threads/lock/1.cc: New.
+ * testsuite/30_threads/lock/2.cc: New.
+ * testsuite/30_threads/lock/3.cc: New.
+ * testsuite/30_threads/lock/4.cc: New.
+
2010-12-02 Jonathan Wakely <jwakely.gcc@gmail.com>
* src/future.cc (future_category): Export compatibility symbol.