Don't use 'using std::error_code' in include/llvm.
This should make sure that most new uses use the std prefix.
llvm-svn: 210835
diff --git a/llvm/unittests/Support/FileOutputBufferTest.cpp b/llvm/unittests/Support/FileOutputBufferTest.cpp
index 2ce9e71..aec3524 100644
--- a/llvm/unittests/Support/FileOutputBufferTest.cpp
+++ b/llvm/unittests/Support/FileOutputBufferTest.cpp
@@ -16,6 +16,7 @@
using namespace llvm;
using namespace llvm::sys;
+using std::error_code;
#define ASSERT_NO_ERROR(x) \
if (error_code ASSERT_NO_ERROR_ec = x) { \