LWG issue 2143: ios_base::xalloc should be thread-safe

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@192539 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-12 19:13:52 +00:00
parent 1206720869
commit 206ce1faaf
2 changed files with 12 additions and 1 deletions
--- a/src/ios.cpp
+++ b/src/ios.cpp
@@ -149,8 +149,11 @@ ios_base::getloc() const
 }

 // xalloc
-
+#if __has_feature(cxx_atomic)
+atomic<int> ios_base::__xindex_ = ATOMIC_VAR_INIT(0);
+#else
 int ios_base::__xindex_ = 0;
+#endif

 int
 ios_base::xalloc()