Allow libc++ to be built on systems without POSIX threads
If you're crazy enough to want this sort of thing, then add
-D_LIBCPP_HAS_NO_THREADS to your CXXFLAGS and
--param=additiona_features=libcpp-has-no-threads to your lit commnad line.
http://reviews.llvm.org/D3969
llvm-svn: 217271
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: b3fcc67f8f13cd95d36ed29d0ae1308decb9e099
diff --git a/include/ios b/include/ios
index d95f18a..6d42607 100644
--- a/include/ios
+++ b/include/ios
@@ -216,7 +216,7 @@
#include <__locale>
#include <system_error>
-#if __has_feature(cxx_atomic)
+#if __has_feature(cxx_atomic) && !_LIBCPP_HAS_NO_THREADS
#include <atomic> // for __xindex_
#endif
@@ -367,7 +367,7 @@
int* __index_;
size_t __event_size_;
size_t __event_cap_;
-#if __has_feature(cxx_atomic)
+#if __has_feature(cxx_atomic) && !_LIBCPP_HAS_NO_THREADS
static atomic<int> __xindex_;
#else
static int __xindex_;