1 files changed, 4 insertions, 4 deletions
diff --git a/clang/lib/Frontend/PrecompiledPreamble.cpp b/clang/lib/Frontend/PrecompiledPreamble.cpp
index 842ffe24708..93f19294dc0 100644
--- a/clang/lib/Frontend/PrecompiledPreamble.cpp
+++ b/clang/lib/Frontend/PrecompiledPreamble.cpp
@@ -28,10 +28,10 @@
 #include "llvm/Support/CrashRecoveryContext.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Mutex.h"
-#include "llvm/Support/MutexGuard.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/VirtualFileSystem.h"
 #include <limits>
+#include <mutex>
 #include <utility>
 
 using namespace clang;
@@ -106,20 +106,20 @@ TemporaryFiles &TemporaryFiles::getInstance() {
 }
 
 TemporaryFiles::~TemporaryFiles() {
-  llvm::MutexGuard Guard(Mutex);
+  std::lock_guard<llvm::sys::Mutex> Guard(Mutex);
   for (const auto &File : Files)
     llvm::sys::fs::remove(File.getKey());
 }
 
 void TemporaryFiles::addFile(StringRef File) {
-  llvm::MutexGuard Guard(Mutex);
+  std::lock_guard<llvm::sys::Mutex> Guard(Mutex);
   auto IsInserted = Files.insert(File).second;
   (void)IsInserted;
   assert(IsInserted && "File has already been added");
 }
 
 void TemporaryFiles::removeFile(StringRef File) {
-  llvm::MutexGuard Guard(Mutex);
+  std::lock_guard<llvm::sys::Mutex> Guard(Mutex);
   auto WasPresent = Files.erase(File);
   (void)WasPresent;
   assert(WasPresent && "File was not tracked");