Attempt to fix the asan/win build.

Source/wtf/Atomics.h

 /*
  * Copyright (C) 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 169 matching lines @@
 
 ALWAYS_INLINE unsigned acquireLoad(volatile const unsigned* ptr)
 {
     unsigned value = *ptr;
     MEMORY_BARRIER();
     return value;
 }
 
 #if defined(ADDRESS_SANITIZER)
 
-__attribute__((no_sanitize_address)) ALWAYS_INLINE void asanUnsafeReleaseStore(volatile unsigned* ptr, unsigned value)
+// FIXME: See comment on NO_SANITIZE_ADDRESS in platform/heap/AddressSanitizer.h
+#if !OS(WIN) || COMPILER(CLANG)
+#define NO_SANITIZE_ADDRESS_ATOMICS __attribute__((no_sanitize_address))
+#else
+#define NO_SANITIZE_ADDRESS_ATOMICS
+#endif
+
+NO_SANITIZE_ADDRESS_ATOMICS ALWAYS_INLINE void asanUnsafeReleaseStore(volatile unsigned* ptr, unsigned value)
 {
     MEMORY_BARRIER();
     *ptr = value;
 }
 
-__attribute__((no_sanitize_address)) ALWAYS_INLINE unsigned asanUnsafeAcquireLoad(volatile const unsigned* ptr)
+NO_SANITIZE_ADDRESS_ATOMICS ALWAYS_INLINE unsigned asanUnsafeAcquireLoad(volatile const unsigned* ptr)
 {
     unsigned value = *ptr;
     MEMORY_BARRIER();
     return value;
 }
 
+#undef NO_SANITIZE_ADDRESS_ATOMICS
+
 #endif // defined(ADDRESS_SANITIZER)
 
 #undef MEMORY_BARRIER
 
 #endif
 
 #if !defined(ADDRESS_SANITIZER)
 
 ALWAYS_INLINE void asanUnsafeReleaseStore(volatile unsigned* ptr, unsigned value)
 {
@@ skipping 18 matching lines @@
 using WTF::acquireLoad;
 using WTF::releaseStore;
 
 // These methods allow loading from and storing to poisoned memory. Only
 // use these methods if you know what you are doing since they will
 // silence use-after-poison errors from ASan.
 using WTF::asanUnsafeAcquireLoad;
 using WTF::asanUnsafeReleaseStore;
 
 #endif // Atomics_h