Index: include/type_traits
===================================================================
--- include/type_traits
+++ include/type_traits
@@ -1670,10 +1670,10 @@
 _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x800);
 _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1000);
 _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2000);
-// MSDN says that MSVC does not support alignment beyond 8192 (=0x2000)
-#if !defined(_LIBCPP_MSVC)
+// PE/COFF does not support alignment beyond 8192 (=0x2000)
+#if !defined(_WIN32)
 _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000);
-#endif // !_LIBCPP_MSVC
+#endif // !_WIN32
 
 #undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION