Remove superfluous std::move

[folly.git] / folly / Hash.h

diff --git a/folly/Hash.h b/folly/Hash.h
index b0ae03bb764bbb3e9e0034c75969f896258c5900..0f0afc5baf71ac4c4ca301becf5f84e98fca6da5 100644 (file)
--- a/folly/Hash.h
+++ b/folly/Hash.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -361,6 +361,14 @@ struct Hash {
   }
 };
 
+template <>
+struct hasher<bool> {
+  size_t operator()(bool key) const {
+    // Make sure that all the output bits depend on the input.
+    return -static_cast<size_t>(key);
+  }
+};
+
 template<> struct hasher<int32_t> {
   size_t operator()(int32_t key) const {
     return hash::jenkins_rev_mix32(uint32_t(key));