Merge pull request #2393 from kuzkry:custom-type-traits-remove_const

PiperOrigin-RevId: 264652890

2 files changed, 3 insertions, 51 deletions

diff --git a/googletest/include/gtest/internal/gtest-internal.h b/googletest/include/gtest/internal/gtest-internal.h
index 240d791..c3cb744 100644
--- a/googletest/include/gtest/internal/gtest-internal.h
+++ b/googletest/include/gtest/internal/gtest-internal.h
@@ -869,30 +869,9 @@ struct RemoveReference<T&> { typedef T type; };  // NOLINT
 #define GTEST_REMOVE_REFERENCE_(T) \
     typename ::testing::internal::RemoveReference<T>::type
 
-// Removes const from a type if it is a const type, otherwise leaves
-// it unchanged.  This is the same as tr1::remove_const, which is not
-// widely available yet.
-template <typename T>
-struct RemoveConst { typedef T type; };  // NOLINT
-template <typename T>
-struct RemoveConst<const T> { typedef T type; };  // NOLINT
-
-// MSVC 8.0, Sun C++, and IBM XL C++ have a bug which causes the above
-// definition to fail to remove the const in 'const int[3]' and 'const
-// char[3][4]'.  The following specialization works around the bug.
-template <typename T, size_t N>
-struct RemoveConst<const T[N]> {
-  typedef typename RemoveConst<T>::type type[N];
-};
-
-// A handy wrapper around RemoveConst that works when the argument
-// T depends on template parameters.
-#define GTEST_REMOVE_CONST_(T) \
-    typename ::testing::internal::RemoveConst<T>::type
-
 // Turns const U&, U&, const U, and U all into U.
 #define GTEST_REMOVE_REFERENCE_AND_CONST_(T) \
-    GTEST_REMOVE_CONST_(GTEST_REMOVE_REFERENCE_(T))
+  typename std::remove_const<GTEST_REMOVE_REFERENCE_(T)>::type
 
 // IsAProtocolMessage<T>::value is a compile-time bool constant that's
 // true if T is type proto2::Message or a subclass of it.
diff --git a/googletest/test/gtest_unittest.cc b/googletest/test/gtest_unittest.cc
index 2b00b70..0047f53 100644
--- a/googletest/test/gtest_unittest.cc
+++ b/googletest/test/gtest_unittest.cc
@@ -61,9 +61,10 @@ TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
 #include <time.h>
 
 #include <map>
-#include <vector>
 #include <ostream>
+#include <type_traits>
 #include <unordered_set>
+#include <vector>
 
 #include "gtest/gtest-spi.h"
 #include "src/gtest-internal-inl.h"
@@ -262,7 +263,6 @@ using testing::internal::OsStackTraceGetterInterface;
 using testing::internal::ParseInt32Flag;
 using testing::internal::RelationToSourceCopy;
 using testing::internal::RelationToSourceReference;
-using testing::internal::RemoveConst;
 using testing::internal::RemoveReference;
 using testing::internal::ShouldRunTestOnShard;
 using testing::internal::ShouldShard;
@@ -7135,33 +7135,6 @@ TEST(RemoveReferenceTest, MacroVersion) {
   TestGTestRemoveReference<const char, const char&>();
 }
 
-
-// Tests that RemoveConst does not affect non-const types.
-TEST(RemoveConstTest, DoesNotAffectNonConstType) {
-  CompileAssertTypesEqual<int, RemoveConst<int>::type>();
-  CompileAssertTypesEqual<char&, RemoveConst<char&>::type>();
-}
-
-// Tests that RemoveConst removes const from const types.
-TEST(RemoveConstTest, RemovesConst) {
-  CompileAssertTypesEqual<int, RemoveConst<const int>::type>();
-  CompileAssertTypesEqual<char[2], RemoveConst<const char[2]>::type>();
-  CompileAssertTypesEqual<char[2][3], RemoveConst<const char[2][3]>::type>();
-}
-
-// Tests GTEST_REMOVE_CONST_.
-
-template <typename T1, typename T2>
-void TestGTestRemoveConst() {
-  CompileAssertTypesEqual<T1, GTEST_REMOVE_CONST_(T2)>();
-}
-
-TEST(RemoveConstTest, MacroVersion) {
-  TestGTestRemoveConst<int, int>();
-  TestGTestRemoveConst<double&, double&>();
-  TestGTestRemoveConst<char, const char>();
-}
-
 // Tests GTEST_REMOVE_REFERENCE_AND_CONST_.
 
 template <typename T1, typename T2>