4 files changed, 4 insertions, 4 deletions
diff --git a/lib/System/Unix/Path.cpp b/lib/System/Unix/Path.cpp
index 63184f6c1c..e655ef40cd 100644
--- a/lib/System/Unix/Path.cpp
+++ b/lib/System/Unix/Path.cpp
@@ -27,7 +27,7 @@
 namespace llvm {
 using namespace sys;
 
-Path::Path(std::string unverified_path) 
+Path::Path(const std::string& unverified_path) 
   : path(unverified_path)
 {
   if (unverified_path.empty())
diff --git a/lib/System/Unix/Path.inc b/lib/System/Unix/Path.inc
index 63184f6c1c..e655ef40cd 100644
--- a/lib/System/Unix/Path.inc
+++ b/lib/System/Unix/Path.inc
@@ -27,7 +27,7 @@
 namespace llvm {
 using namespace sys;
 
-Path::Path(std::string unverified_path) 
+Path::Path(const std::string& unverified_path) 
   : path(unverified_path)
 {
   if (unverified_path.empty())
diff --git a/lib/System/Win32/Path.cpp b/lib/System/Win32/Path.cpp
index 095417f0fe..070ebb3120 100644
--- a/lib/System/Win32/Path.cpp
+++ b/lib/System/Win32/Path.cpp
@@ -97,7 +97,7 @@ Path::GetTemporaryDirectory() {
   return *TempDirectory;
 }
 
-Path::Path(std::string unverified_path)
+Path::Path(const std::string& unverified_path)
   : path(unverified_path)
 {
   FlipBackSlashes(path);
diff --git a/lib/System/Win32/Path.inc b/lib/System/Win32/Path.inc
index 095417f0fe..070ebb3120 100644
--- a/lib/System/Win32/Path.inc
+++ b/lib/System/Win32/Path.inc
@@ -97,7 +97,7 @@ Path::GetTemporaryDirectory() {
   return *TempDirectory;
 }
 
-Path::Path(std::string unverified_path)
+Path::Path(const std::string& unverified_path)
   : path(unverified_path)
 {
   FlipBackSlashes(path);