Make header standalone for libstdc++.

llvm-svn: 203243

diff --git a/llvm/include/llvm/Support/MathExtras.h b/llvm/include/llvm/Support/MathExtras.h
index 2200d4d..5db22f4 100644 (file)
--- a/llvm/include/llvm/Support/MathExtras.h
+++ b/llvm/include/llvm/Support/MathExtras.h
@@ -17,6 +17,7 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/SwapByteOrder.h"
 #include <cstring>
+#include <type_traits>
 
 #ifdef _MSC_VER
 #include <intrin.h>