3 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Support/Windows/Memory.inc b/llvm/lib/Support/Windows/Memory.inc
index d410df35aa0..431cfb6cf99 100644
--- a/llvm/lib/Support/Windows/Memory.inc
+++ b/llvm/lib/Support/Windows/Memory.inc
@@ -19,6 +19,7 @@
 
 // The Windows.h header must be the last one included.
 #include "WindowsSupport.h"
+using std::error_code;
 
 namespace {
 
diff --git a/llvm/lib/Support/Windows/Process.inc b/llvm/lib/Support/Windows/Process.inc
index 0be871c695c..c88557c5eef 100644
--- a/llvm/lib/Support/Windows/Process.inc
+++ b/llvm/lib/Support/Windows/Process.inc
@@ -48,7 +48,7 @@
 
 using namespace llvm;
 using namespace sys;
-
+using std::error_code;
 
 process::id_type self_process::get_id() {
   return GetCurrentProcessId();
diff --git a/llvm/lib/Support/Windows/Program.inc b/llvm/lib/Support/Windows/Program.inc
index 6c7ddbde332..8d1df5ffc92 100644
--- a/llvm/lib/Support/Windows/Program.inc
+++ b/llvm/lib/Support/Windows/Program.inc
@@ -24,6 +24,7 @@
 //===----------------------------------------------------------------------===//
 
 namespace llvm {
+using std::error_code;
 using namespace sys;
 
 ProcessInfo::ProcessInfo() : ProcessHandle(0), Pid(0), ReturnCode(0) {}