Fixes the logic for determining whether cxxabi.h is available.

include/gtest/internal/gtest-type-util.h

@@ -47,9 +47,11 @@
 
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
 
-#ifdef __GNUC__
+// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
+// libstdc++ (which is where cxxabi.h comes from).
+#ifdef __GLIBCXX__
 #include <cxxabi.h>
-#endif  // __GNUC__
+#endif  // __GLIBCXX__
 
 #include <typeinfo>
 
@@ -74,7 +76,7 @@ String GetTypeName() {
 #if GTEST_HAS_RTTI
 
   const char* const name = typeid(T).name();
-#ifdef __GNUC__
+#ifdef __GLIBCXX__
   int status = 0;
   // gcc's implementation of typeid(T).name() mangles the type name,
   // so we have to demangle it.
@@ -84,7 +86,7 @@ String GetTypeName() {
   return name_str;
 #else
   return name;
-#endif  // __GNUC__
+#endif  // __GLIBCXX__
 
 #else
   return "<type>";

include/gtest/internal/gtest-type-util.h.pump

@@ -47,9 +47,11 @@ $var n = 50  $$ Maximum length of type lists we want to support.
 
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
 
-#ifdef __GNUC__
+// #ifdef __GNUC__ is too general here.  It is possible to use gcc without using
+// libstdc++ (which is where cxxabi.h comes from).
+#ifdef __GLIBCXX__
 #include <cxxabi.h>
-#endif  // __GNUC__
+#endif  // __GLIBCXX__
 
 #include <typeinfo>
 
@@ -74,7 +76,7 @@ String GetTypeName() {
 #if GTEST_HAS_RTTI
 
   const char* const name = typeid(T).name();
-#ifdef __GNUC__
+#ifdef __GLIBCXX__
   int status = 0;
   // gcc's implementation of typeid(T).name() mangles the type name,
   // so we have to demangle it.
@@ -84,7 +86,7 @@ String GetTypeName() {
   return name_str;
 #else
   return name;
-#endif  // __GNUC__
+#endif  // __GLIBCXX__
 
 #else
   return "<type>";