yet more C++ standards-compliance stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25028 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index ce7f4c8..dd45582 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -39,6 +39,7 @@
 #include "llvm/Config/config.h"
 #include <algorithm>
 #include <iostream>
+#include <ios>
 #include <sstream>
 using namespace llvm;