Googletest export

Explicitly define copy constructors used in googletest tests

As of C++11, providing a user-declared copy assignment operator should
suppress the availability of an implicit default copy constructor.
Classes that provide (or delete) a copy assignment operator must provide
their own copy constructor if one is desired. This may be an explicit
default copy constructor if appropriate.

As googletest is a C++11 codebase, this change should be made without
qualification.

This addresses the -Wdeprecated-copy warnings issued by trunk clang:

While compiling googletest/test/googletest-death-test-test.cc:

In file included from .../googletest/test/googletest-death-test-test.cc:33:
.../googletest/include/gtest/gtest-death-test.h:196:8: error: definition of implicit copy constructor for 'ExitedWithCode' is deprecated because it has a user-declared copy assignment operator [-Werror,-Wdeprecated-copy]
  void operator=(const ExitedWithCode& other);
       ^
.../googletest/test/googletest-death-test-test.cc:279:16: note: in implicit copy constructor for 'testing::ExitedWithCode' first required here
  EXPECT_PRED1(pred0,  status0);
               ^

While compiling googletest/test/googletest-param-test-test.cc:

.../googletest/test/googletest-param-test-test.cc:502:8: error: definition of implicit copy constructor for 'NonDefaultConstructAssignString' is deprecated because it has a user-declared copy assignment operator [-Werror,-Wdeprecated-copy]
  void operator=(const NonDefaultConstructAssignString&);
       ^
.../googletest/test/googletest-param-test-test.cc:507:36: note: in implicit copy constructor for 'NonDefaultConstructAssignString' first required here
      Combine(Values(0, 1), Values(NonDefaultConstructAssignString("A"),

This matches other changes made elsewhere in the googletest codebase,
such as 306f3754a7. Perhaps those previous changes did not consider
test code.

PiperOrigin-RevId: 307495126

googletest/include/gtest/gtest-death-test.h

@@ -190,11 +190,10 @@ GTEST_API_ bool InDeathTestChild();
 class GTEST_API_ ExitedWithCode {
  public:
   explicit ExitedWithCode(int exit_code);
+  ExitedWithCode(const ExitedWithCode&) = default;
+  void operator=(const ExitedWithCode& other) = delete;
   bool operator()(int exit_status) const;
  private:
-  // No implementation - assignment is unsupported.
-  void operator=(const ExitedWithCode& other);
-
   const int exit_code_;
 };
 

googletest/test/googletest-param-test-test.cc

@@ -490,16 +490,16 @@ TEST(CombineTest, CombineWithMaxNumberOfParameters) {
 class NonDefaultConstructAssignString {
  public:
   NonDefaultConstructAssignString(const std::string& s) : str_(s) {}
+  NonDefaultConstructAssignString(const NonDefaultConstructAssignString&) =
+      default;
+
+  NonDefaultConstructAssignString() = delete;
+  void operator=(const NonDefaultConstructAssignString&) = delete;
 
   const std::string& str() const { return str_; }
 
  private:
   std::string str_;
-
-  // Not default constructible
-  NonDefaultConstructAssignString();
-  // Not assignable
-  void operator=(const NonDefaultConstructAssignString&);
 };
 
 TEST(CombineTest, NonDefaultConstructAssign) {