Align base::hash_map with C++11.

base/containers/hash_tables_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/containers/hash_tables.h"
 
+#include <string>
+
 #include "base/basictypes.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 class HashPairTest : public testing::Test {
 };
 
 #define INSERT_PAIR_TEST(Type, value1, value2) \
   { \
@@ skipping 26 matching lines @@
   typedef std::pair<int64, int16> Int64Int16Pair;
   typedef std::pair<int64, int32> Int64Int32Pair;
   typedef std::pair<int64, int64> Int64Int64Pair;
 
   INSERT_PAIR_TEST(Int64Int16Pair, 4, 6);
   INSERT_PAIR_TEST(Int64Int32Pair, 9, (1 << 29) + 378128932);
   INSERT_PAIR_TEST(Int64Int64Pair, 10,
                    (GG_INT64_C(1) << 60) + GG_INT64_C(78931732321));
 }
 
+// Verify that base::hash_set<const char*> compares by pointer value, not as C
+// strings.
+TEST(HashTableTest, CharPointers) {
+  std::string str1("hello");
+  std::string str2("hello");
+  base::hash_set<const char*> set;
+
+  set.insert(str1.c_str());
+  EXPECT_EQ(1u, set.count(str1.c_str()));
+  EXPECT_EQ(0u, set.count(str2.c_str()));
+}
+
 }  // namespace