diff --git a/.travis.yml b/.travis.yml
index 4e7413a4..4ec239fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,10 +29,6 @@ matrix:
       group: deprecated-2017Q4
       compiler: gcc
       env: BUILD_TYPE=Debug VERBOSE=1 CXX_FLAGS=-std=c++11
-    - os: linux
-      group: deprecated-2017Q4
-      compiler: clang
-      env: BUILD_TYPE=Debug VERBOSE=1
     - os: linux
       group: deprecated-2017Q4
       compiler: clang
@@ -40,16 +36,9 @@ matrix:
     - os: linux
       compiler: clang
       env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11 NO_EXCEPTION=ON NO_RTTI=ON COMPILER_IS_GNUCXX=ON
-    - os: osx
-      compiler: gcc
-      env: BUILD_TYPE=Debug VERBOSE=1
     - os: osx
       compiler: gcc
       env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11
-    - os: osx
-      compiler: clang
-      env: BUILD_TYPE=Debug VERBOSE=1
-      if: type != pull_request
     - os: osx
       env: BUILD_TYPE=Release VERBOSE=1 CXX_FLAGS=-std=c++11
       if: type != pull_request
diff --git a/googlemock/CMakeLists.txt b/googlemock/CMakeLists.txt
index 8a8de1f6..2a913080 100644
--- a/googlemock/CMakeLists.txt
+++ b/googlemock/CMakeLists.txt
@@ -157,6 +157,9 @@ if (gmock_build_tests)
   cxx_test(gmock-generated-matchers_test gmock_main)
   cxx_test(gmock-internal-utils_test gmock_main)
   cxx_test(gmock-matchers_test gmock_main)
+  if (MINGW)
+    target_compile_options(gmock-matchers_test PRIVATE "-Wa,-mbig-obj")
+  endif()
   cxx_test(gmock-more-actions_test gmock_main)
   cxx_test(gmock-nice-strict_test gmock_main)
   cxx_test(gmock-port_test gmock_main)
diff --git a/googletest/include/gtest/gtest-printers.h b/googletest/include/gtest/gtest-printers.h
index 51865f84..39c5c463 100644
--- a/googletest/include/gtest/gtest-printers.h
+++ b/googletest/include/gtest/gtest-printers.h
@@ -100,6 +100,7 @@
 #ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 #define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
 
+#include <functional>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <string>
@@ -639,7 +640,15 @@ inline void PrintTo(absl::string_view sp, ::std::ostream* os) {
 #endif  // GTEST_HAS_ABSL
 
 #if GTEST_LANG_CXX11
+
 inline void PrintTo(std::nullptr_t, ::std::ostream* os) { *os << "(nullptr)"; }
+
+template <typename T>
+void PrintTo(std::reference_wrapper<T> ref, ::std::ostream* os) {
+  // Delegate to wrapped value.
+  PrintTo(ref.get(), os);
+}
+
 #endif  // GTEST_LANG_CXX11
 
 #if GTEST_HAS_TR1_TUPLE || GTEST_HAS_STD_TUPLE_
diff --git a/googletest/include/gtest/internal/gtest-port-arch.h b/googletest/include/gtest/internal/gtest-port-arch.h
index f83700e0..587ed5e5 100644
--- a/googletest/include/gtest/internal/gtest-port-arch.h
+++ b/googletest/include/gtest/internal/gtest-port-arch.h
@@ -38,14 +38,15 @@
 // Determines the platform on which Google Test is compiled.
 #ifdef __CYGWIN__
 # define GTEST_OS_CYGWIN 1
+# elif defined(__MINGW__) || defined(__MINGW32__) || defined(__MINGW64__)
+#  define GTEST_OS_WINDOWS_MINGW 1
+#  define GTEST_OS_WINDOWS 1
 #elif defined __SYMBIAN32__
 # define GTEST_OS_SYMBIAN 1
 #elif defined _WIN32
 # define GTEST_OS_WINDOWS 1
 # ifdef _WIN32_WCE
 #  define GTEST_OS_WINDOWS_MOBILE 1
-# elif defined(__MINGW__) || defined(__MINGW32__)
-#  define GTEST_OS_WINDOWS_MINGW 1
 # elif defined(WINAPI_FAMILY)
 #  include <winapifamily.h>
 #  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
diff --git a/googletest/test/googletest-printers-test.cc b/googletest/test/googletest-printers-test.cc
index ea8369d2..6e26274e 100644
--- a/googletest/test/googletest-printers-test.cc
+++ b/googletest/test/googletest-printers-test.cc
@@ -1112,9 +1112,25 @@ TEST(PrintStdTupleTest, NestedTuple) {
 #endif  // GTEST_LANG_CXX11
 
 #if GTEST_LANG_CXX11
+
 TEST(PrintNullptrT, Basic) {
   EXPECT_EQ("(nullptr)", Print(nullptr));
 }
+
+TEST(PrintReferenceWrapper, Printable) {
+  int x = 5;
+  EXPECT_EQ("5", Print(std::ref(x)));
+  EXPECT_EQ("5", Print(std::cref(x)));
+}
+
+TEST(PrintReferenceWrapper, Unprintable) {
+  ::foo::UnprintableInFoo up;
+  EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+            Print(std::ref(up)));
+  EXPECT_EQ("16-byte object <EF-12 00-00 34-AB 00-00 00-00 00-00 00-00 00-00>",
+            Print(std::cref(up)));
+}
+
 #endif  // GTEST_LANG_CXX11
 
 // Tests printing user-defined unprintable types.
diff --git a/googletest/test/gtest_unittest.cc b/googletest/test/gtest_unittest.cc
index fa102240..c03b3671 100644
--- a/googletest/test/gtest_unittest.cc
+++ b/googletest/test/gtest_unittest.cc
@@ -63,9 +63,7 @@ TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
 #include <map>
 #include <vector>
 #include <ostream>
-#if GTEST_LANG_CXX11
 #include <unordered_set>
-#endif  // GTEST_LANG_CXX11
 
 #include "gtest/gtest-spi.h"
 #include "src/gtest-internal-inl.h"
@@ -5156,8 +5154,7 @@ TEST(AssertionResultTest, CanStreamOstreamManipulators) {
   EXPECT_STREQ("Data\n\\0Will be visible", r.message());
 }
 
-// The next test uses explicit conversion operators -- a C++11 feature.
-#if GTEST_LANG_CXX11
+// The next test uses explicit conversion operators
 
 TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool) {
   struct ExplicitlyConvertibleToBool {
@@ -5170,8 +5167,6 @@ TEST(AssertionResultTest, ConstructibleFromContextuallyConvertibleToBool) {
   EXPECT_TRUE(v2);
 }
 
-#endif  // GTEST_LANG_CXX11
-
 struct ConvertibleToAssertionResult {
   operator AssertionResult() const { return AssertionResult(true); }
 };
@@ -6831,7 +6826,7 @@ TEST(ColoredOutputTest, UsesColorsWhenStdoutIsTty) {
 TEST(ColoredOutputTest, UsesColorsWhenTermSupportsColors) {
   GTEST_FLAG(color) = "auto";
 
-#if GTEST_OS_WINDOWS
+#if GTEST_OS_WINDOWS && !GTEST_OS_WINDOWS_MINGW
   // On Windows, we ignore the TERM variable as it's usually not set.
 
   SetEnv("TERM", "dumb");
@@ -7555,7 +7550,6 @@ TEST(IsContainerTestTest, WorksForContainer) {
             sizeof(IsContainerTest<std::map<int, double> >(0)));
 }
 
-#if GTEST_LANG_CXX11
 struct ConstOnlyContainerWithPointerIterator {
   using const_iterator = int*;
   const_iterator begin() const;
@@ -7577,7 +7571,6 @@ TEST(IsContainerTestTest, ConstOnlyContainer) {
   EXPECT_EQ(sizeof(IsContainer),
             sizeof(IsContainerTest<ConstOnlyContainerWithClassIterator>(0)));
 }
-#endif  // GTEST_LANG_CXX11
 
 // Tests IsHashTable.
 struct AHashTable {
@@ -7590,10 +7583,8 @@ struct NotReallyAHashTable {
 TEST(IsHashTable, Basic) {
   EXPECT_TRUE(testing::internal::IsHashTable<AHashTable>::value);
   EXPECT_FALSE(testing::internal::IsHashTable<NotReallyAHashTable>::value);
-#if GTEST_LANG_CXX11
   EXPECT_FALSE(testing::internal::IsHashTable<std::vector<int>>::value);
   EXPECT_TRUE(testing::internal::IsHashTable<std::unordered_set<int>>::value);
-#endif  // GTEST_LANG_CXX11
 #if GTEST_HAS_HASH_SET_
   EXPECT_TRUE(testing::internal::IsHashTable<__gnu_cxx::hash_set<int>>::value);
 #endif  // GTEST_HAS_HASH_SET_