Fix signed integer overflow in StaticTracepointTest.cpp

[folly.git] / folly / portability / Atomic.h

diff --git a/folly/portability/Atomic.h b/folly/portability/Atomic.h
index 811c24ccb81ab1fc3bd5794ffbc70a346050d146..450c553acc8b240b2cd42515a91e4a1e1ef7f040 100755 (executable)
--- a/folly/portability/Atomic.h
+++ b/folly/portability/Atomic.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,14 +18,14 @@
 
 #ifdef _WIN32
 
+#include <intrin.h>
 #include <stdint.h>
 
 #include <folly/Portability.h>
-// The intrinsics we need are in Windows.h :(
-#include <folly/portability/Windows.h>
 
-FOLLY_ALWAYS_INLINE int64_t __sync_fetch_and_add(int64_t* ptr, int64_t value) {
-  return InterlockedExchangeAdd64(ptr, value);
+FOLLY_ALWAYS_INLINE
+int64_t __sync_fetch_and_add(volatile int64_t* ptr, int64_t value) {
+  return _InterlockedExchangeAdd64(ptr, value);
 }
 
 #endif