eh_tm.cc (free_any_cxa_exception): Use __GCC_ATOMIC_INT_LOCK_FREE, not _GLIBCXX_ATOMIC_BUILTINS_4.

2011-12-19  Benjamin Kosnik  <bkoz@redhat.com>

	* libsupc++/eh_tm.cc (free_any_cxa_exception): Use
	__GCC_ATOMIC_INT_LOCK_FREE, not _GLIBCXX_ATOMIC_BUILTINS_4.

From-SVN: r182512

libstdc++-v3/ChangeLog

 2011-12-19  Benjamin Kosnik  <bkoz@redhat.com>
 
+	* libsupc++/eh_tm.cc (free_any_cxa_exception): Use
+	__GCC_ATOMIC_INT_LOCK_FREE, not _GLIBCXX_ATOMIC_BUILTINS_4.
+
+2011-12-19  Benjamin Kosnik  <bkoz@redhat.com>
+
 	* testsuite/performance/25_algorithms/search_n.cc: Disambiguate
 	local variable.
 

libstdc++-v3/libsupc++/eh_tm.cc

 // -*- C++ -*- Exception handling routines for Transactional Memory.
-// Copyright (C) 2009 Free Software Foundation, Inc.
+// Copyright (C) 2009, 2011 Free Software Foundation, Inc.
 //
 // This file is part of GCC.
 //
@@ -45,7 +45,7 @@ free_any_cxa_exception (_Unwind_Exception *eo)
       __cxa_free_dependent_exception (dep);
     }
 
-#ifdef _GLIBCXX_ATOMIC_BUILTINS_4
+#if __GCC_ATOMIC_INT_LOCK_FREE > 1
   if (__sync_sub_and_fetch (&h->referenceCount, 1) == 0)
 #endif
     __cxa_free_exception (h + 1);