Make header standalone for libstdc++.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203243 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h
index 2200d4d..5db22f4 100644 (file)
--- a/include/llvm/Support/MathExtras.h
+++ b/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>