Googletest export

Remove linked_ptr and use std::shared_ptr instead

PiperOrigin-RevId: 218571466

15 files changed, 57 insertions, 203 deletions

diff --git a/googlemock/include/gmock/gmock-actions.h b/googlemock/include/gmock/gmock-actions.h
index d4af949..e4af9d2 100644
--- a/googlemock/include/gmock/gmock-actions.h
+++ b/googlemock/include/gmock/gmock-actions.h
@@ -42,6 +42,7 @@
 #endif
 
 #include <algorithm>
+#include <memory>
 #include <string>
 #include <utility>
 
@@ -346,9 +347,7 @@ class ActionInterface {
 // An Action<F> is a copyable and IMMUTABLE (except by assignment)
 // object that represents an action to be taken when a mock function
 // of type F is called.  The implementation of Action<T> is just a
-// linked_ptr to const ActionInterface<T>, so copying is fairly cheap.
-// Don't inherit from Action!
-//
+// std::shared_ptr to const ActionInterface<T>. Don't inherit from Action!
 // You can view an object implementing ActionInterface<F> as a
 // concrete action (including its current state), and an Action<F>
 // object as a handle to it.
@@ -425,7 +424,7 @@ class Action {
 #if GTEST_LANG_CXX11
   ::std::function<F> fun_;
 #endif
-  internal::linked_ptr<ActionInterface<F> > impl_;
+  std::shared_ptr<ActionInterface<F>> impl_;
 };
 
 // The PolymorphicAction class template makes it easy to implement a
@@ -519,7 +518,7 @@ class ActionAdaptor : public ActionInterface<F1> {
   }
 
  private:
-  const internal::linked_ptr<ActionInterface<F2> > impl_;
+  const std::shared_ptr<ActionInterface<F2>> impl_;
 
   GTEST_DISALLOW_ASSIGN_(ActionAdaptor);
 };
@@ -601,7 +600,7 @@ class ReturnAction {
     // Result to call.  ImplicitCast_ forces the compiler to convert R to
     // Result without considering explicit constructors, thus resolving the
     // ambiguity. value_ is then initialized using its copy constructor.
-    explicit Impl(const linked_ptr<R>& value)
+    explicit Impl(const std::shared_ptr<R>& value)
         : value_before_cast_(*value),
           value_(ImplicitCast_<Result>(value_before_cast_)) {}
 
@@ -626,7 +625,7 @@ class ReturnAction {
     typedef typename Function<F>::Result Result;
     typedef typename Function<F>::ArgumentTuple ArgumentTuple;
 
-    explicit Impl(const linked_ptr<R>& wrapper)
+    explicit Impl(const std::shared_ptr<R>& wrapper)
         : performed_(false), wrapper_(wrapper) {}
 
     virtual Result Perform(const ArgumentTuple&) {
@@ -638,12 +637,12 @@ class ReturnAction {
 
    private:
     bool performed_;
-    const linked_ptr<R> wrapper_;
+    const std::shared_ptr<R> wrapper_;
 
     GTEST_DISALLOW_ASSIGN_(Impl);
   };
 
-  const linked_ptr<R> value_;
+  const std::shared_ptr<R> value_;
 
   GTEST_DISALLOW_ASSIGN_(ReturnAction);
 };
@@ -866,7 +865,7 @@ class SetArgumentPointeeAction<N, Proto, true> {
   }
 
  private:
-  const internal::linked_ptr<Proto> proto_;
+  const std::shared_ptr<Proto> proto_;
 
   GTEST_DISALLOW_ASSIGN_(SetArgumentPointeeAction);
 };
@@ -931,7 +930,7 @@ class InvokeCallbackWithoutArgsAction {
   Result Perform(const ArgumentTuple&) const { return callback_->Run(); }
 
  private:
-  const internal::linked_ptr<CallbackType> callback_;
+  const std::shared_ptr<CallbackType> callback_;
 
   GTEST_DISALLOW_ASSIGN_(InvokeCallbackWithoutArgsAction);
 };
diff --git a/googlemock/include/gmock/gmock-cardinalities.h b/googlemock/include/gmock/gmock-cardinalities.h
index f916931..8fa25eb 100644
--- a/googlemock/include/gmock/gmock-cardinalities.h
+++ b/googlemock/include/gmock/gmock-cardinalities.h
@@ -40,6 +40,7 @@
 #define GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
 
 #include <limits.h>
+#include <memory>
 #include <ostream>  // NOLINT
 #include "gmock/internal/gmock-port.h"
 #include "gtest/gtest.h"
@@ -81,9 +82,8 @@ class CardinalityInterface {
 
 // A Cardinality is a copyable and IMMUTABLE (except by assignment)
 // object that specifies how many times a mock function is expected to
-// be called.  The implementation of Cardinality is just a linked_ptr
-// to const CardinalityInterface, so copying is fairly cheap.
-// Don't inherit from Cardinality!
+// be called.  The implementation of Cardinality is just a std::shared_ptr
+// to const CardinalityInterface. Don't inherit from Cardinality!
 class GTEST_API_ Cardinality {
  public:
   // Constructs a null cardinality.  Needed for storing Cardinality
@@ -123,7 +123,7 @@ class GTEST_API_ Cardinality {
                                         ::std::ostream* os);
 
  private:
-  internal::linked_ptr<const CardinalityInterface> impl_;
+  std::shared_ptr<const CardinalityInterface> impl_;
 };
 
 // Creates a cardinality that allows at least n calls.
diff --git a/googlemock/include/gmock/gmock-generated-actions.h b/googlemock/include/gmock/gmock-generated-actions.h
index 0845b22..8966f05 100644
--- a/googlemock/include/gmock/gmock-generated-actions.h
+++ b/googlemock/include/gmock/gmock-generated-actions.h
@@ -41,6 +41,7 @@
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 
+#include <memory>
 #include <utility>
 
 #include "gmock/gmock-actions.h"
@@ -348,7 +349,7 @@ class InvokeCallbackAction {
         callback_.get(), args);
   }
  private:
-  const linked_ptr<CallbackType> callback_;
+  const std::shared_ptr<CallbackType> callback_;
 };
 
 // An INTERNAL macro for extracting the type of a tuple field.  It's
diff --git a/googlemock/include/gmock/gmock-generated-actions.h.pump b/googlemock/include/gmock/gmock-generated-actions.h.pump
index bc22be8..09a39ca 100644
--- a/googlemock/include/gmock/gmock-generated-actions.h.pump
+++ b/googlemock/include/gmock/gmock-generated-actions.h.pump
@@ -43,6 +43,7 @@ $$}} This meta comment fixes auto-indentation in editors.
 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 #define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_ACTIONS_H_
 
+#include <memory>
 #include <utility>
 
 #include "gmock/gmock-actions.h"
@@ -118,7 +119,7 @@ class InvokeCallbackAction {
         callback_.get(), args);
   }
  private:
-  const linked_ptr<CallbackType> callback_;
+  const std::shared_ptr<CallbackType> callback_;
 };
 
 // An INTERNAL macro for extracting the type of a tuple field.  It's
diff --git a/googlemock/include/gmock/gmock-matchers.h b/googlemock/include/gmock/gmock-matchers.h
index 6e8bc03..95bc22c 100644
--- a/googlemock/include/gmock/gmock-matchers.h
+++ b/googlemock/include/gmock/gmock-matchers.h
@@ -43,14 +43,15 @@
 #include <algorithm>
 #include <iterator>
 #include <limits>
+#include <memory>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
 #include <utility>
 #include <vector>
-#include "gtest/gtest.h"
 #include "gmock/internal/gmock-internal-utils.h"
 #include "gmock/internal/gmock-port.h"
+#include "gtest/gtest.h"
 
 #if GTEST_HAS_STD_INITIALIZER_LIST_
 # include <initializer_list>  // NOLINT -- must be after gtest.h
@@ -338,29 +339,15 @@ class MatcherBase {
   virtual ~MatcherBase() {}
 
  private:
-  // shared_ptr (util/gtl/shared_ptr.h) and linked_ptr have similar
-  // interfaces.  The former dynamically allocates a chunk of memory
-  // to hold the reference count, while the latter tracks all
-  // references using a circular linked list without allocating
-  // memory.  It has been observed that linked_ptr performs better in
-  // typical scenarios.  However, shared_ptr can out-perform
-  // linked_ptr when there are many more uses of the copy constructor
-  // than the default constructor.
-  //
-  // If performance becomes a problem, we should see if using
-  // shared_ptr helps.
-  ::testing::internal::linked_ptr<
-      const MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)> >
-      impl_;
+  std::shared_ptr<const MatcherInterface<GTEST_REFERENCE_TO_CONST_(T)>> impl_;
 };
 
 }  // namespace internal
 
 // A Matcher<T> is a copyable and IMMUTABLE (except by assignment)
 // object that can check whether a value of type T matches.  The
-// implementation of Matcher<T> is just a linked_ptr to const
-// MatcherInterface<T>, so copying is fairly cheap.  Don't inherit
-// from Matcher!
+// implementation of Matcher<T> is just a std::shared_ptr to const
+// MatcherInterface<T>.  Don't inherit from Matcher!
 template <typename T>
 class Matcher : public internal::MatcherBase<T> {
  public:
@@ -1586,7 +1573,7 @@ class MatchesRegexMatcher {
   }
 
  private:
-  const internal::linked_ptr<const RE> regex_;
+  const std::shared_ptr<const RE> regex_;
   const bool full_match_;
 
   GTEST_DISALLOW_ASSIGN_(MatchesRegexMatcher);
diff --git a/googlemock/include/gmock/gmock-spec-builders.h b/googlemock/include/gmock/gmock-spec-builders.h
index 5d4b73b..7759cb3 100644
--- a/googlemock/include/gmock/gmock-spec-builders.h
+++ b/googlemock/include/gmock/gmock-spec-builders.h
@@ -62,6 +62,7 @@
 #define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
 
 #include <map>
+#include <memory>
 #include <set>
 #include <sstream>
 #include <string>
@@ -219,8 +220,7 @@ class GTEST_API_ UntypedFunctionMockerBase {
  protected:
   typedef std::vector<const void*> UntypedOnCallSpecs;
 
-  typedef std::vector<internal::linked_ptr<ExpectationBase> >
-  UntypedExpectations;
+  using UntypedExpectations = std::vector<std::shared_ptr<ExpectationBase>>;
 
   // Returns an Expectation object that references and co-owns exp,
   // which must be an expectation on this mock function.
@@ -498,12 +498,7 @@ class GTEST_API_ Mock {
 //   - Constness is shallow: a const Expectation object itself cannot
 //     be modified, but the mutable methods of the ExpectationBase
 //     object it references can be called via expectation_base().
-//   - The constructors and destructor are defined out-of-line because
-//     the Symbian WINSCW compiler wants to otherwise instantiate them
-//     when it sees this class definition, at which point it doesn't have
-//     ExpectationBase available yet, leading to incorrect destruction
-//     in the linked_ptr (or compilation errors if using a checking
-//     linked_ptr).
+
 class GTEST_API_ Expectation {
  public:
   // Constructs a null object that doesn't reference any expectation.
@@ -555,16 +550,15 @@ class GTEST_API_ Expectation {
   typedef ::std::set<Expectation, Less> Set;
 
   Expectation(
-      const internal::linked_ptr<internal::ExpectationBase>& expectation_base);
+      const std::shared_ptr<internal::ExpectationBase>& expectation_base);
 
   // Returns the expectation this object references.
-  const internal::linked_ptr<internal::ExpectationBase>&
-  expectation_base() const {
+  const std::shared_ptr<internal::ExpectationBase>& expectation_base() const {
     return expectation_base_;
   }
 
-  // A linked_ptr that co-owns the expectation this handle references.
-  internal::linked_ptr<internal::ExpectationBase> expectation_base_;
+  // A shared_ptr that co-owns the expectation this handle references.
+  std::shared_ptr<internal::ExpectationBase> expectation_base_;
 };
 
 // A set of expectation handles.  Useful in the .After() clause of
@@ -646,11 +640,8 @@ class GTEST_API_ Sequence {
   void AddExpectation(const Expectation& expectation) const;
 
  private:
-  // The last expectation in this sequence.  We use a linked_ptr here
-  // because Sequence objects are copyable and we want the copies to
-  // be aliases.  The linked_ptr allows the copies to co-own and share
-  // the same Expectation object.
-  internal::linked_ptr<Expectation> last_expectation_;
+  // The last expectation in this sequence.
+  std::shared_ptr<Expectation> last_expectation_;
 };  // class Sequence
 
 // An object of this type causes all EXPECT_CALL() statements
@@ -873,7 +864,7 @@ class GTEST_API_ ExpectationBase {
   Cardinality cardinality_;            // The cardinality of the expectation.
   // The immediate pre-requisites (i.e. expectations that must be
   // satisfied before this expectation can be matched) of this
-  // expectation.  We use linked_ptr in the set because we want an
+  // expectation.  We use std::shared_ptr in the set because we want an
   // Expectation object to be co-owned by its FunctionMocker and its
   // successors.  This allows multiple mock objects to be deleted at
   // different times.
@@ -1631,7 +1622,7 @@ class FunctionMockerBase : public UntypedFunctionMockerBase {
     Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
     TypedExpectation<F>* const expectation =
         new TypedExpectation<F>(this, file, line, source_text, m);
-    const linked_ptr<ExpectationBase> untyped_expectation(expectation);
+    const std::shared_ptr<ExpectationBase> untyped_expectation(expectation);
     // See the definition of untyped_expectations_ for why access to
     // it is unprotected here.
     untyped_expectations_.push_back(untyped_expectation);
diff --git a/googlemock/include/gmock/internal/gmock-internal-utils.h b/googlemock/include/gmock/internal/gmock-internal-utils.h
index fd33c00..7514635 100644
--- a/googlemock/include/gmock/internal/gmock-internal-utils.h
+++ b/googlemock/include/gmock/internal/gmock-internal-utils.h
@@ -92,15 +92,6 @@ inline const typename Pointer::element_type* GetRawPointer(const Pointer& p) {
 template <typename Element>
 inline Element* GetRawPointer(Element* p) { return p; }
 
-// This comparator allows linked_ptr to be stored in sets.
-template <typename T>
-struct LinkedPtrLessThan {
-  bool operator()(const ::testing::internal::linked_ptr<T>& lhs,
-                  const ::testing::internal::linked_ptr<T>& rhs) const {
-    return lhs.get() < rhs.get();
-  }
-};
-
 // Symbian compilation can be done with wchar_t being either a native
 // type or a typedef.  Using Google Mock with OpenC without wchar_t
 // should require the definition of _STLP_NO_WCHAR_T.
diff --git a/googlemock/include/gmock/internal/gmock-port.h b/googlemock/include/gmock/internal/gmock-port.h
index fda27db..c593249 100644
--- a/googlemock/include/gmock/internal/gmock-port.h
+++ b/googlemock/include/gmock/internal/gmock-port.h
@@ -52,7 +52,6 @@
 // here, as Google Mock depends on Google Test.  Only add a utility
 // here if it's truly specific to Google Mock.
 
-#include "gtest/internal/gtest-linked_ptr.h"
 #include "gtest/internal/gtest-port.h"
 #include "gmock/internal/custom/gmock-port.h"
 
diff --git a/googlemock/src/gmock-spec-builders.cc b/googlemock/src/gmock-spec-builders.cc
index 5c20ed1..c93b2b5 100644
--- a/googlemock/src/gmock-spec-builders.cc
+++ b/googlemock/src/gmock-spec-builders.cc
@@ -38,6 +38,7 @@
 #include <stdlib.h>
 #include <iostream>  // NOLINT
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
 #include <vector>
@@ -848,7 +849,7 @@ void Mock::ClearDefaultActionsLocked(void* mock_obj)
 Expectation::Expectation() {}
 
 Expectation::Expectation(
-    const internal::linked_ptr<internal::ExpectationBase>& an_expectation_base)
+    const std::shared_ptr<internal::ExpectationBase>& an_expectation_base)
     : expectation_base_(an_expectation_base) {}
 
 Expectation::~Expectation() {}
diff --git a/googlemock/test/gmock-generated-actions_test.cc b/googlemock/test/gmock-generated-actions_test.cc
index 2d663a5..3111d85 100644
--- a/googlemock/test/gmock-generated-actions_test.cc
+++ b/googlemock/test/gmock-generated-actions_test.cc
@@ -35,6 +35,7 @@
 #include "gmock/gmock-generated-actions.h"
 
 #include <functional>
+#include <memory>
 #include <sstream>
 #include <string>
 #include "gmock/gmock.h"
@@ -1129,9 +1130,9 @@ ACTION_TEMPLATE(ReturnSmartPointer,
 }
 
 TEST(ActionTemplateTest, WorksForTemplateTemplateParameters) {
-  using ::testing::internal::linked_ptr;
-  const Action<linked_ptr<int>()> a = ReturnSmartPointer<linked_ptr>(42);
-  linked_ptr<int> p = a.Perform(std::make_tuple());
+  const Action<std::shared_ptr<int>()> a =
+      ReturnSmartPointer<std::shared_ptr>(42);
+  std::shared_ptr<int> p = a.Perform(std::make_tuple());
   EXPECT_EQ(42, *p);
 }
 
@@ -1161,11 +1162,10 @@ ACTION_TEMPLATE(ReturnGiant,
 }
 
 TEST(ActionTemplateTest, WorksFor10TemplateParameters) {
-  using ::testing::internal::linked_ptr;
-  typedef GiantTemplate<linked_ptr<int>, bool, double, 5,
-      true, 6, char, unsigned, int> Giant;
-  const Action<Giant()> a = ReturnGiant<
-      int, bool, double, 5, true, 6, char, unsigned, int, linked_ptr>(42);
+  using Giant = GiantTemplate<std::shared_ptr<int>, bool, double, 5, true, 6,
+                              char, unsigned, int>;
+  const Action<Giant()> a = ReturnGiant<int, bool, double, 5, true, 6, char,
+                                        unsigned, int, std::shared_ptr>(42);
   Giant giant = a.Perform(std::make_tuple());
   EXPECT_EQ(42, giant.value);
 }
diff --git a/googlemock/test/gmock-internal-utils_test.cc b/googlemock/test/gmock-internal-utils_test.cc
index 41498f0..aa0162b 100644
--- a/googlemock/test/gmock-internal-utils_test.cc
+++ b/googlemock/test/gmock-internal-utils_test.cc
@@ -123,8 +123,6 @@ TEST(ConvertIdentifierNameToWordsTest, WorksWhenNameIsMixture) {
 }
 
 TEST(PointeeOfTest, WorksForSmartPointers) {
-  CompileAssertTypesEqual<const char,
-      PointeeOf<internal::linked_ptr<const char> >::type>();
 #if GTEST_HAS_STD_UNIQUE_PTR_
   CompileAssertTypesEqual<int, PointeeOf<std::unique_ptr<int> >::type>();
 #endif  // GTEST_HAS_STD_UNIQUE_PTR_
@@ -151,10 +149,6 @@ TEST(GetRawPointerTest, WorksForSmartPointers) {
   const std::shared_ptr<double> p2(raw_p2);
   EXPECT_EQ(raw_p2, GetRawPointer(p2));
 #endif  // GTEST_HAS_STD_SHARED_PTR_
-
-  const char* const raw_p4 = new const char('a');  // NOLINT
-  const internal::linked_ptr<const char> p4(raw_p4);
-  EXPECT_EQ(raw_p4, GetRawPointer(p4));
 }
 
 TEST(GetRawPointerTest, WorksForRawPointers) {
@@ -687,7 +681,7 @@ TEST(StlContainerViewTest, WorksForDynamicNativeArray) {
                      StlContainerView<std::tuple<const int*, size_t> >::type>();
   StaticAssertTypeEq<
       NativeArray<double>,
-      StlContainerView<std::tuple<linked_ptr<double>, int> >::type>();
+      StlContainerView<std::tuple<std::shared_ptr<double>, int> >::type>();
 
   StaticAssertTypeEq<
       const NativeArray<int>,
diff --git a/googlemock/test/gmock-matchers_test.cc b/googlemock/test/gmock-matchers_test.cc
index f4e9e9f..45006bf 100644
--- a/googlemock/test/gmock-matchers_test.cc
+++ b/googlemock/test/gmock-matchers_test.cc
@@ -143,13 +143,11 @@ using testing::internal::ExplainMatchFailureTupleTo;
 using testing::internal::FloatingEqMatcher;
 using testing::internal::FormatMatcherDescription;
 using testing::internal::IsReadableTypeName;
-using testing::internal::linked_ptr;
 using testing::internal::MatchMatrix;
 using testing::internal::RE;
 using testing::internal::scoped_ptr;
 using testing::internal::StreamMatchResultListener;
 using testing::internal::Strings;
-using testing::internal::linked_ptr;
 using testing::internal::scoped_ptr;
 using testing::internal::string;
 
@@ -1177,24 +1175,6 @@ TEST(IsNullTest, MatchesNullPointer) {
 #endif
 }
 
-TEST(IsNullTest, LinkedPtr) {
-  const Matcher<linked_ptr<int> > m = IsNull();
-  const linked_ptr<int> null_p;
-  const linked_ptr<int> non_null_p(new int);
-
-  EXPECT_TRUE(m.Matches(null_p));
-  EXPECT_FALSE(m.Matches(non_null_p));
-}
-
-TEST(IsNullTest, ReferenceToConstLinkedPtr) {
-  const Matcher<const linked_ptr<double>&> m = IsNull();
-  const linked_ptr<double> null_p;
-  const linked_ptr<double> non_null_p(new double);
-
-  EXPECT_TRUE(m.Matches(null_p));
-  EXPECT_FALSE(m.Matches(non_null_p));
-}
-
 #if GTEST_LANG_CXX11
 TEST(IsNullTest, StdFunction) {
   const Matcher<std::function<void()>> m = IsNull();
@@ -1226,18 +1206,18 @@ TEST(NotNullTest, MatchesNonNullPointer) {
 }
 
 TEST(NotNullTest, LinkedPtr) {
-  const Matcher<linked_ptr<int> > m = NotNull();
-  const linked_ptr<int> null_p;
-  const linked_ptr<int> non_null_p(new int);
+  const Matcher<std::shared_ptr<int>> m = NotNull();
+  const std::shared_ptr<int> null_p;
+  const std::shared_ptr<int> non_null_p(new int);
 
   EXPECT_FALSE(m.Matches(null_p));
   EXPECT_TRUE(m.Matches(non_null_p));
 }
 
 TEST(NotNullTest, ReferenceToConstLinkedPtr) {
-  const Matcher<const linked_ptr<double>&> m = NotNull();
-  const linked_ptr<double> null_p;
-  const linked_ptr<double> non_null_p(new double);
+  const Matcher<const std::shared_ptr<double>&> m = NotNull();
+  const std::shared_ptr<double> null_p;
+  const std::shared_ptr<double> non_null_p(new double);
 
   EXPECT_FALSE(m.Matches(null_p));
   EXPECT_TRUE(m.Matches(non_null_p));
diff --git a/googlemock/test/gmock-more-actions_test.cc b/googlemock/test/gmock-more-actions_test.cc
index 521f305..b4e0fc3 100644
--- a/googlemock/test/gmock-more-actions_test.cc
+++ b/googlemock/test/gmock-more-actions_test.cc
@@ -35,11 +35,11 @@
 #include "gmock/gmock-more-actions.h"
 
 #include <functional>
+#include <memory>
 #include <sstream>
 #include <string>
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
-#include "gtest/internal/gtest-linked_ptr.h"
 
 namespace testing {
 namespace gmock_more_actions_test {
@@ -61,7 +61,6 @@ using testing::StaticAssertTypeEq;
 using testing::Unused;
 using testing::WithArg;
 using testing::WithoutArgs;
-using testing::internal::linked_ptr;
 
 // For suppressing compiler warnings on conversion possibly losing precision.
 inline short Short(short n) { return n; }  // NOLINT
@@ -529,14 +528,6 @@ TEST(SaveArgPointeeActionTest, WorksForCompatibleType) {
   EXPECT_EQ('a', result);
 }
 
-TEST(SaveArgPointeeActionTest, WorksForLinkedPtr) {
-  int result = 0;
-  linked_ptr<int> value(new int(5));
-  const Action<void(linked_ptr<int>)> a1 = SaveArgPointee<0>(&result);
-  a1.Perform(std::make_tuple(value));
-  EXPECT_EQ(5, result);
-}
-
 TEST(SetArgRefereeActionTest, WorksForSameType) {
   int value = 0;
   const Action<void(int&)> a1 = SetArgReferee<0>(1);
diff --git a/googlemock/test/gmock-spec-builders_test.cc b/googlemock/test/gmock-spec-builders_test.cc
index 65c9fcc..6502be7 100644
--- a/googlemock/test/gmock-spec-builders_test.cc
+++ b/googlemock/test/gmock-spec-builders_test.cc
@@ -34,6 +34,7 @@
 
 #include "gmock/gmock-spec-builders.h"
 
+#include <memory>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
@@ -99,7 +100,6 @@ using testing::internal::kFail;
 using testing::internal::kInfoVerbosity;
 using testing::internal::kWarn;
 using testing::internal::kWarningVerbosity;
-using testing::internal::linked_ptr;
 
 #if GTEST_HAS_STREAM_REDIRECTION
 using testing::HasSubstr;
@@ -172,7 +172,7 @@ class ReferenceHoldingMock {
  public:
   ReferenceHoldingMock() {}
 
-  MOCK_METHOD1(AcceptReference, void(linked_ptr<MockA>*));
+  MOCK_METHOD1(AcceptReference, void(std::shared_ptr<MockA>*));
 
  private:
   GTEST_DISALLOW_COPY_AND_ASSIGN_(ReferenceHoldingMock);
@@ -2619,7 +2619,7 @@ TEST(VerifyAndClearTest, DoesNotAffectOtherMockObjects) {
 
 TEST(VerifyAndClearTest,
      DestroyingChainedMocksDoesNotDeadlockThroughExpectations) {
-  linked_ptr<MockA> a(new MockA);
+  std::shared_ptr<MockA> a(new MockA);
   ReferenceHoldingMock test_mock;
 
   // EXPECT_CALL stores a reference to a inside test_mock.
@@ -2639,7 +2639,7 @@ TEST(VerifyAndClearTest,
 
 TEST(VerifyAndClearTest,
      DestroyingChainedMocksDoesNotDeadlockThroughDefaultAction) {
-  linked_ptr<MockA> a(new MockA);
+  std::shared_ptr<MockA> a(new MockA);
   ReferenceHoldingMock test_mock;
 
   // ON_CALL stores a reference to a inside test_mock.
diff --git a/googlemock/test/gmock_stress_test.cc b/googlemock/test/gmock_stress_test.cc
index 9ae0b1e..20725d6 100644
--- a/googlemock/test/gmock_stress_test.cc
+++ b/googlemock/test/gmock_stress_test.cc
@@ -60,87 +60,8 @@ void JoinAndDelete(ThreadWithParam<T>* t) {
   delete t;
 }
 
-using internal::linked_ptr;
-
-// Helper classes for testing using linked_ptr concurrently.
-
-class Base {
- public:
-  explicit Base(int a_x) : x_(a_x) {}
-  virtual ~Base() {}
-  int x() const { return x_; }
- private:
-  int x_;
-};
-
-class Derived1 : public Base {
- public:
-  Derived1(int a_x, int a_y) : Base(a_x), y_(a_y) {}
-  int y() const { return y_; }
- private:
-  int y_;
-};
-
-class Derived2 : public Base {
- public:
-  Derived2(int a_x, int a_z) : Base(a_x), z_(a_z) {}
-  int z() const { return z_; }
- private:
-  int z_;
-};
-
-linked_ptr<Derived1> pointer1(new Derived1(1, 2));
-linked_ptr<Derived2> pointer2(new Derived2(3, 4));
-
 struct Dummy {};
 
-// Tests that we can copy from a linked_ptr and read it concurrently.
-void TestConcurrentCopyAndReadLinkedPtr(Dummy /* dummy */) {
-  // Reads pointer1 and pointer2 while they are being copied from in
-  // another thread.
-  EXPECT_EQ(1, pointer1->x());
-  EXPECT_EQ(2, pointer1->y());
-  EXPECT_EQ(3, pointer2->x());
-  EXPECT_EQ(4, pointer2->z());
-
-  // Copies from pointer1.
-  linked_ptr<Derived1> p1(pointer1);
-  EXPECT_EQ(1, p1->x());
-  EXPECT_EQ(2, p1->y());
-
-  // Assigns from pointer2 where the LHS was empty.
-  linked_ptr<Base> p2;
-  p2 = pointer1;
-  EXPECT_EQ(1, p2->x());
-
-  // Assigns from pointer2 where the LHS was not empty.
-  p2 = pointer2;
-  EXPECT_EQ(3, p2->x());
-}
-
-const linked_ptr<Derived1> p0(new Derived1(1, 2));
-
-// Tests that we can concurrently modify two linked_ptrs that point to
-// the same object.
-void TestConcurrentWriteToEqualLinkedPtr(Dummy /* dummy */) {
-  // p1 and p2 point to the same, shared thing.  One thread resets p1.
-  // Another thread assigns to p2.  This will cause the same
-  // underlying "ring" to be updated concurrently.
-  linked_ptr<Derived1> p1(p0);
-  linked_ptr<Derived1> p2(p0);
-
-  EXPECT_EQ(1, p1->x());
-  EXPECT_EQ(2, p1->y());
-
-  EXPECT_EQ(1, p2->x());
-  EXPECT_EQ(2, p2->y());
-
-  p1.reset();
-  p2 = p0;
-
-  EXPECT_EQ(1, p2->x());
-  EXPECT_EQ(2, p2->y());
-}
 
 // Tests that different mock objects can be used in their respective
 // threads.  This should generate no Google Test failure.
@@ -275,8 +196,6 @@ void TestPartiallyOrderedExpectationsWithThreads(Dummy /* dummy */) {
 // Tests using Google Mock constructs in many threads concurrently.
 TEST(StressTest, CanUseGMockWithThreads) {
   void (*test_routines[])(Dummy dummy) = {
-    &TestConcurrentCopyAndReadLinkedPtr,
-    &TestConcurrentWriteToEqualLinkedPtr,
     &TestConcurrentMockObjects,
     &TestConcurrentCallsOnSameObject,
     &TestPartiallyOrderedExpectationsWithThreads,