Add missing <atomic> include to appease MSVC builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365914 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/PrettyStackTrace.cpp b/lib/Support/PrettyStackTrace.cpp
index e566440f49a2fab51d7f3551951c0bba30efc21f..aec00baec0e35d91a7c882eac1f8404ada7e7df5 100644 (file)
--- a/lib/Support/PrettyStackTrace.cpp
+++ b/lib/Support/PrettyStackTrace.cpp
@@ -21,6 +21,7 @@
 #include "llvm/Support/Watchdog.h"
 #include "llvm/Support/raw_ostream.h"
 
+#include <atomic>
 #include <cstdarg>
 #include <cstdio>
 #include <tuple>