r191125 - in /branches/gcc-4_7-branch/libstdc++...

[bkoz@gcc.gnu.org]

Author: bkoz
Date: Mon Sep 10 05:08:07 2012
New Revision: 191125

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191125
Log:
2012-09-09  Thiago Macieira  <thiago.macieira@intel.com>

	PR libstdc++/54172
        * libsupc++/guard.cc (__cxa_guard_acquire): Exit the loop earlier if
        we detect that another thread has had success. Don't compare_exchange
        from a finished state back to a waiting state. Comment.


Modified:
    branches/gcc-4_7-branch/libstdc++-v3/ChangeLog
    branches/gcc-4_7-branch/libstdc++-v3/libsupc++/guard.cc