diff --git a/unittests/Support/DynamicLibrary/PipSqueak.cxx b/unittests/Support/DynamicLibrary/PipSqueak.cxx
index 1de85236a88..c54de6759dc 100644
--- a/unittests/Support/DynamicLibrary/PipSqueak.cxx
+++ b/unittests/Support/DynamicLibrary/PipSqueak.cxx
@@ -8,7 +8,17 @@
 //===----------------------------------------------------------------------===//
 
 #include "PipSqueak.h"
+
+#ifdef _WIN32
+// Disable warnings from inclusion of xlocale & exception
+#pragma warning(push)
+#pragma warning(disable: 4530)
+#pragma warning(disable: 4577)
 #include <string>
+#pragma warning(pop)
+#else
+#include <string>
+#endif
 
 struct Global {
   std::string *Str;