Enable C++11 features for VS2015 (fix appveyor fail)

.gitignore

@@ -1,2 +1,15 @@
 # Ignore CI build directory
 build/
+_build/
+
+# Visual Studio files
+*.sdf
+*.opensdf
+*.VC.opendb
+*.suo
+*.user
+_ReSharper.Caches/
+Win32-Debug/
+Win32-Release/
+x64-Debug/
+x64-Release/

googlemock/test/gmock-matchers_test.cc

@@ -58,6 +58,11 @@
 # include <forward_list>  // NOLINT
 #endif
 
+// Disable MSVC warning: "decorated name length exceeded, name was truncated".
+#ifdef _MSC_VER
+# pragma warning(disable:4503)
+#endif
+
 namespace testing {
 
 namespace internal {

googletest/include/gtest/internal/gtest-port.h

@@ -323,7 +323,7 @@
 // -std={c,gnu}++{0x,11} is passed.  The C++11 standard specifies a
 // value for __cplusplus, and recent versions of clang, gcc, and
 // probably other compilers set that too in C++11 mode.
-# if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L
+# if __GXX_EXPERIMENTAL_CXX0X__ || __cplusplus >= 201103L || _MSC_VER >= 1900
 // Compiling in at least C++11 mode.
 #  define GTEST_LANG_CXX11 1
 # else
@@ -355,12 +355,16 @@
 #if GTEST_STDLIB_CXX11
 # define GTEST_HAS_STD_BEGIN_AND_END_ 1
 # define GTEST_HAS_STD_FORWARD_LIST_ 1
-# define GTEST_HAS_STD_FUNCTION_ 1
+# if !defined(_MSC_VER) || (_MSC_FULL_VER >= 190023824) // works only with VS2015U2 and better
+#   define GTEST_HAS_STD_FUNCTION_ 1
+# endif
 # define GTEST_HAS_STD_INITIALIZER_LIST_ 1
 # define GTEST_HAS_STD_MOVE_ 1
 # define GTEST_HAS_STD_SHARED_PTR_ 1
 # define GTEST_HAS_STD_TYPE_TRAITS_ 1
 # define GTEST_HAS_STD_UNIQUE_PTR_ 1
+# define GTEST_HAS_UNORDERED_MAP_ 1
+# define GTEST_HAS_UNORDERED_SET_ 1
 #endif
 
 // C++11 specifies that <tuple> provides std::tuple.
@@ -616,7 +620,7 @@ struct _RTL_CRITICAL_SECTION;
 // Determines if hash_map/hash_set are available.
 // Only used for testing against those containers.
 #if !defined(GTEST_HAS_HASH_MAP_)
-# if _MSC_VER
+# if defined(_MSC_VER) && (_MSC_VER < 1900)
 #  define GTEST_HAS_HASH_MAP_ 1  // Indicates that hash_map is available.
 #  define GTEST_HAS_HASH_SET_ 1  // Indicates that hash_set is available.
 # endif  // _MSC_VER

googletest/test/gtest-printers_test.cc

@@ -51,10 +51,15 @@
 #include "gtest/gtest.h"
 
 // hash_map and hash_set are available under Visual C++, or on Linux.
-#if GTEST_HAS_HASH_MAP_
+#if GTEST_HAS_UNORDERED_MAP_
+# include <unordered_map>       // NOLINT
+#elif GTEST_HAS_HASH_MAP_
 # include <hash_map>            // NOLINT
 #endif  // GTEST_HAS_HASH_MAP_
-#if GTEST_HAS_HASH_SET_
+
+#if GTEST_HAS_UNORDERED_SET_
+# include <unordered_set>       // NOLINT
+#elif GTEST_HAS_HASH_SET_
 # include <hash_set>            // NOLINT
 #endif  // GTEST_HAS_HASH_SET_
 
@@ -217,18 +222,46 @@ using ::testing::internal::string;
 // The hash_* classes are not part of the C++ standard.  STLport
 // defines them in namespace std.  MSVC defines them in ::stdext.  GCC
 // defines them in ::.
+#if GTEST_HAS_UNORDERED_MAP_
+
+#define GTEST_HAS_HASH_MAP_ 1
+template<class Key, class T>
+using hash_map = ::std::unordered_map<Key, T>;
+template<class Key, class T>
+using hash_multimap = ::std::unordered_multimap<Key, T>;
+
+#elif GTEST_HAS_HASH_MAP_
+
 #ifdef _STLP_HASH_MAP  // We got <hash_map> from STLport.
 using ::std::hash_map;
-using ::std::hash_set;
 using ::std::hash_multimap;
-using ::std::hash_multiset;
 #elif _MSC_VER
 using ::stdext::hash_map;
-using ::stdext::hash_set;
 using ::stdext::hash_multimap;
+#endif
+
+#endif
+
+#if GTEST_HAS_UNORDERED_SET_
+
+#define GTEST_HAS_HASH_SET_ 1
+template<class Key>
+using hash_set = ::std::unordered_set<Key>;
+template<class Key>
+using hash_multiset = ::std::unordered_multiset<Key>;
+
+#elif GTEST_HAS_HASH_SET_
+
+#ifdef _STLP_HASH_MAP  // We got <hash_map> from STLport.
+using ::std::hash_set;
+using ::std::hash_multiset;
+#elif _MSC_VER
+using ::stdext::hash_set;
 using ::stdext::hash_multiset;
 #endif
 
+#endif
+
 // Prints a value to a string using the universal value printer.  This
 // is a helper for testing UniversalPrinter<T>::Print() for various types.
 template <typename T>

googletest/test/gtest_catch_exceptions_test_.cc

@@ -138,7 +138,7 @@ TEST_F(CxxExceptionInConstructorTest, ThrowsExceptionInConstructor) {
 }
 
 // Exceptions in destructors are not supported in C++11.
-#if !defined(__GXX_EXPERIMENTAL_CXX0X__) &&  __cplusplus < 201103L
+#if !GTEST_LANG_CXX11
 class CxxExceptionInDestructorTest : public Test {
  public:
   static void TearDownTestCase() {