diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mutex.h b/compiler-rt/lib/sanitizer_common/sanitizer_mutex.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mutex.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mutex.h
@@ -66,8 +66,8 @@
   }
 
  private:
-  SpinMutex(const SpinMutex&);
-  void operator=(const SpinMutex&);
+  SpinMutex(const SpinMutex &) = delete;
+  void operator=(const SpinMutex &) = delete;
 };
 
 class BlockingMutex {
@@ -171,8 +171,8 @@
     }
   }
 
-  RWMutex(const RWMutex&);
-  void operator = (const RWMutex&);
+  RWMutex(const RWMutex &) = delete;
+  void operator=(const RWMutex &) = delete;
 };
 
 template<typename MutexType>
@@ -190,8 +190,8 @@
  private:
   MutexType *mu_;
 
-  GenericScopedLock(const GenericScopedLock&);
-  void operator=(const GenericScopedLock&);
+  GenericScopedLock(const GenericScopedLock &) = delete;
+  void operator=(const GenericScopedLock &) = delete;
 };
 
 template<typename MutexType>
@@ -209,8 +209,8 @@
  private:
   MutexType *mu_;
 
-  GenericScopedReadLock(const GenericScopedReadLock&);
-  void operator=(const GenericScopedReadLock&);
+  GenericScopedReadLock(const GenericScopedReadLock &) = delete;
+  void operator=(const GenericScopedReadLock &) = delete;
 };
 
 typedef GenericScopedLock<StaticSpinMutex> SpinMutexLock;