Casts char to unsigned char before calling isspace() etc to avoid undefined behavior (by Zhanyong Wan); removes conditional #includes keyed on GTEST_HAS_PROTOBUF_ (by Zhanyong Wan); publishes GTEST_HAS_STREAM_REDIRECTION (by Vlad Losev); forward declares some classes properly (by Samuel Benzaquen); honors the --gtest_catch_exceptions flag (by Vlad Losev).

git-svn-id: http://googletest.googlecode.com/svn/trunk@480 861a406c-534a-0410-8894-cb66d6ee9925

4 files changed, 98 insertions, 53 deletions

diff --git a/src/gtest-internal-inl.h b/src/gtest-internal-inl.h
index 73920e4..fe53c21 100644
--- a/src/gtest-internal-inl.h
+++ b/src/gtest-internal-inl.h
@@ -771,9 +771,17 @@ class GTEST_API_ UnitTestImpl {
   // Restores the test cases and tests to their order before the first shuffle.
   void UnshuffleTests();
 
+  // Returns the value of GTEST_FLAG(catch_exceptions) at the moment
+  // UnitTest::Run() starts.
+  bool catch_exceptions() const { return catch_exceptions_; }
+
  private:
   friend class ::testing::UnitTest;
 
+  // Used by UnitTest::Run() to capture the state of
+  // GTEST_FLAG(catch_exceptions) at the moment it starts.
+  void set_catch_exceptions(bool value) { catch_exceptions_ = value; }
+
   // The UnitTest object that owns this implementation object.
   UnitTest* const parent_;
 
@@ -876,6 +884,10 @@ class GTEST_API_ UnitTestImpl {
   // A per-thread stack of traces created by the SCOPED_TRACE() macro.
   internal::ThreadLocal<std::vector<TraceInfo> > gtest_trace_stack_;
 
+  // The value of GTEST_FLAG(catch_exceptions) at the moment RunAllTests()
+  // starts.
+  bool catch_exceptions_;
+
   GTEST_DISALLOW_COPY_AND_ASSIGN_(UnitTestImpl);
 };  // class UnitTestImpl
 
@@ -885,14 +897,16 @@ inline UnitTestImpl* GetUnitTestImpl() {
   return UnitTest::GetInstance()->impl();
 }
 
+#if GTEST_USES_SIMPLE_RE
+
 // Internal helper functions for implementing the simple regular
 // expression matcher.
 GTEST_API_ bool IsInSet(char ch, const char* str);
-GTEST_API_ bool IsDigit(char ch);
-GTEST_API_ bool IsPunct(char ch);
+GTEST_API_ bool IsAsciiDigit(char ch);
+GTEST_API_ bool IsAsciiPunct(char ch);
 GTEST_API_ bool IsRepeat(char ch);
-GTEST_API_ bool IsWhiteSpace(char ch);
-GTEST_API_ bool IsWordChar(char ch);
+GTEST_API_ bool IsAsciiWhiteSpace(char ch);
+GTEST_API_ bool IsAsciiWordChar(char ch);
 GTEST_API_ bool IsValidEscape(char ch);
 GTEST_API_ bool AtomMatchesChar(bool escaped, char pattern, char ch);
 GTEST_API_ bool ValidateRegex(const char* regex);
@@ -901,6 +915,8 @@ GTEST_API_ bool MatchRepetitionAndRegexAtHead(
     bool escaped, char ch, char repeat, const char* regex, const char* str);
 GTEST_API_ bool MatchRegexAnywhere(const char* regex, const char* str);
 
+#endif  // GTEST_USES_SIMPLE_RE
+
 // Parses the command line for Google Test flags, without initializing
 // other parts of Google Test.
 GTEST_API_ void ParseGoogleTestFlagsOnly(int* argc, char** argv);
@@ -947,7 +963,7 @@ bool ParseNaturalNumber(const ::std::string& str, Integer* number) {
   // Fail fast if the given string does not begin with a digit;
   // this bypasses strtoXXX's "optional leading whitespace and plus
   // or minus sign" semantics, which are undesirable here.
-  if (str.empty() || !isdigit(str[0])) {
+  if (str.empty() || !IsDigit(str[0])) {
     return false;
   }
   errno = 0;
diff --git a/src/gtest-port.cc b/src/gtest-port.cc
index 5eec8fa..8a7005f 100644
--- a/src/gtest-port.cc
+++ b/src/gtest-port.cc
@@ -181,20 +181,20 @@ bool IsInSet(char ch, const char* str) {
 // Returns true iff ch belongs to the given classification.  Unlike
 // similar functions in <ctype.h>, these aren't affected by the
 // current locale.
-bool IsDigit(char ch) { return '0' <= ch && ch <= '9'; }
-bool IsPunct(char ch) {
+bool IsAsciiDigit(char ch) { return '0' <= ch && ch <= '9'; }
+bool IsAsciiPunct(char ch) {
   return IsInSet(ch, "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~");
 }
 bool IsRepeat(char ch) { return IsInSet(ch, "?*+"); }
-bool IsWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
-bool IsWordChar(char ch) {
+bool IsAsciiWhiteSpace(char ch) { return IsInSet(ch, " \f\n\r\t\v"); }
+bool IsAsciiWordChar(char ch) {
   return ('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z') ||
       ('0' <= ch && ch <= '9') || ch == '_';
 }
 
 // Returns true iff "\\c" is a supported escape sequence.
 bool IsValidEscape(char c) {
-  return (IsPunct(c) || IsInSet(c, "dDfnrsStvwW"));
+  return (IsAsciiPunct(c) || IsInSet(c, "dDfnrsStvwW"));
 }
 
 // Returns true iff the given atom (specified by escaped and pattern)
@@ -202,19 +202,19 @@ bool IsValidEscape(char c) {
 bool AtomMatchesChar(bool escaped, char pattern_char, char ch) {
   if (escaped) {  // "\\p" where p is pattern_char.
     switch (pattern_char) {
-      case 'd': return IsDigit(ch);
-      case 'D': return !IsDigit(ch);
+      case 'd': return IsAsciiDigit(ch);
+      case 'D': return !IsAsciiDigit(ch);
       case 'f': return ch == '\f';
       case 'n': return ch == '\n';
       case 'r': return ch == '\r';
-      case 's': return IsWhiteSpace(ch);
-      case 'S': return !IsWhiteSpace(ch);
+      case 's': return IsAsciiWhiteSpace(ch);
+      case 'S': return !IsAsciiWhiteSpace(ch);
       case 't': return ch == '\t';
       case 'v': return ch == '\v';
-      case 'w': return IsWordChar(ch);
-      case 'W': return !IsWordChar(ch);
+      case 'w': return IsAsciiWordChar(ch);
+      case 'W': return !IsAsciiWordChar(ch);
     }
-    return IsPunct(pattern_char) && pattern_char == ch;
+    return IsAsciiPunct(pattern_char) && pattern_char == ch;
   }
 
   return (pattern_char == '.' && ch != '\n') || pattern_char == ch;
@@ -449,7 +449,7 @@ GTestLog::~GTestLog() {
 #pragma warning(disable: 4996)
 #endif  // _MSC_VER
 
-#if GTEST_HAS_STREAM_REDIRECTION_
+#if GTEST_HAS_STREAM_REDIRECTION
 
 // Object that captures an output stream (stdout/stderr).
 class CapturedStream {
@@ -589,7 +589,7 @@ String GetCapturedStdout() { return GetCapturedStream(&g_captured_stdout); }
 // Stops capturing stderr and returns the captured string.
 String GetCapturedStderr() { return GetCapturedStream(&g_captured_stderr); }
 
-#endif  // GTEST_HAS_STREAM_REDIRECTION_
+#endif  // GTEST_HAS_STREAM_REDIRECTION
 
 #if GTEST_HAS_DEATH_TEST
 
@@ -619,7 +619,7 @@ static String FlagToEnvVar(const char* flag) {
 
   Message env_var;
   for (size_t i = 0; i != full_flag.length(); i++) {
-    env_var << static_cast<char>(toupper(full_flag.c_str()[i]));
+    env_var << ToUpper(full_flag.c_str()[i]);
   }
 
   return env_var.GetString();
diff --git a/src/gtest-typed-test.cc b/src/gtest-typed-test.cc
index 3cc4b5d..f70043e 100644
--- a/src/gtest-typed-test.cc
+++ b/src/gtest-typed-test.cc
@@ -40,7 +40,7 @@ namespace internal {
 // Skips to the first non-space char in str. Returns an empty string if str
 // contains only whitespace characters.
 static const char* SkipSpaces(const char* str) {
-  while (isspace(*str))
+  while (IsSpace(*str))
     str++;
   return str;
 }
diff --git a/src/gtest.cc b/src/gtest.cc
index 93ab6a8..287ca88 100644
--- a/src/gtest.cc
+++ b/src/gtest.cc
@@ -501,7 +501,7 @@ bool UnitTestOptions::FilterMatchesTest(const String &test_case_name,
           !MatchesFilter(full_name, negative.c_str()));
 }
 
-#if GTEST_OS_WINDOWS
+#if GTEST_HAS_SEH
 // Returns EXCEPTION_EXECUTE_HANDLER if Google Test should handle the
 // given SEH exception, or EXCEPTION_CONTINUE_SEARCH otherwise.
 // This function is useful as an __except condition.
@@ -527,7 +527,7 @@ int UnitTestOptions::GTestShouldProcessSEH(DWORD exception_code) {
 
   return should_handle ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
 }
-#endif  // GTEST_OS_WINDOWS
+#endif  // GTEST_HAS_SEH
 
 }  // namespace internal
 
@@ -1362,7 +1362,7 @@ AssertionResult HRESULTFailureHelper(const char* expr,
                                           kBufSize,  // buf size
                                           NULL);  // no arguments for inserts
   // Trims tailing white space (FormatMessage leaves a trailing cr-lf)
-  for (; message_length && isspace(error_text[message_length - 1]);
+  for (; message_length && IsSpace(error_text[message_length - 1]);
           --message_length) {
     error_text[message_length - 1] = '\0';
   }
@@ -1620,9 +1620,9 @@ bool String::CaseInsensitiveCStringEquals(const char * lhs, const char * rhs) {
   // current locale.
 bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                               const wchar_t* rhs) {
-  if ( lhs == NULL ) return rhs == NULL;
+  if (lhs == NULL) return rhs == NULL;
 
-  if ( rhs == NULL ) return false;
+  if (rhs == NULL) return false;
 
 #if GTEST_OS_WINDOWS
   return _wcsicmp(lhs, rhs) == 0;
@@ -2096,26 +2096,53 @@ static Result HandleSehExceptionsInMethodIfSupported(
 template <class T, typename Result>
 static Result HandleExceptionsInMethodIfSupported(
     T* object, Result (T::*method)(), const char* location) {
+  // NOTE: The user code can affect the way in which Google Test handles
+  // exceptions by setting GTEST_FLAG(catch_exceptions), but only before
+  // RUN_ALL_TESTS() starts. It is technically possible to check the flag
+  // after the exception is caught and either report or re-throw the
+  // exception based on the flag's value:
+  //
+  // try {
+  //   // Perform the test method.
+  // } catch (...) {
+  //   if (GTEST_FLAG(catch_exceptions))
+  //     // Report the exception as failure.
+  //   else
+  //     throw;  // Re-throws the original exception.
+  // }
+  //
+  // However, the purpose of this flag is to allow the program to drop into
+  // the debugger when the exception is thrown. On most platforms, once the
+  // control enters the catch block, the exception origin information is
+  // lost and the debugger will stop the program at the point of the
+  // re-throw in this function -- instead of at the point of the original
+  // throw statement in the code under test.  For this reason, we perform
+  // the check early, sacrificing the ability to affect Google Test's
+  // exception handling in the method where the exception is thrown.
+  if (internal::GetUnitTestImpl()->catch_exceptions()) {
 #if GTEST_HAS_EXCEPTIONS
-  try {
-    return HandleSehExceptionsInMethodIfSupported(object, method, location);
-  } catch (const GoogleTestFailureException&) {  // NOLINT
-    // This exception doesn't originate in code under test. It makes no
-    // sense to report it as a test failure.
-    throw;
-  } catch (const std::exception& e) {  // NOLINT
-    internal::ReportFailureInUnknownLocation(
-        TestPartResult::kFatalFailure,
-        FormatCxxExceptionMessage(e.what(), location));
-  } catch (...) {  // NOLINT
-    internal::ReportFailureInUnknownLocation(
-        TestPartResult::kFatalFailure,
-        FormatCxxExceptionMessage(NULL, location));
-  }
-  return static_cast<Result>(0);
+    try {
+      return HandleSehExceptionsInMethodIfSupported(object, method, location);
+    } catch (const GoogleTestFailureException&) {  // NOLINT
+      // This exception doesn't originate in code under test. It makes no
+      // sense to report it as a test failure.
+      throw;
+    } catch (const std::exception& e) {  // NOLINT
+      internal::ReportFailureInUnknownLocation(
+          TestPartResult::kFatalFailure,
+          FormatCxxExceptionMessage(e.what(), location));
+    } catch (...) {  // NOLINT
+      internal::ReportFailureInUnknownLocation(
+          TestPartResult::kFatalFailure,
+          FormatCxxExceptionMessage(NULL, location));
+    }
+    return static_cast<Result>(0);
 #else
-  return HandleSehExceptionsInMethodIfSupported(object, method, location);
+    return HandleSehExceptionsInMethodIfSupported(object, method, location);
 #endif  // GTEST_HAS_EXCEPTIONS
+  } else {
+    return (object->*method)();
+  }
 }
 
 // Runs the test and updates the test result.
@@ -3773,17 +3800,19 @@ void UnitTest::RecordPropertyForCurrentTest(const char* key,
 // We don't protect this under mutex_, as we only support calling it
 // from the main thread.
 int UnitTest::Run() {
-#if GTEST_HAS_SEH
-  // Catch SEH-style exceptions.
+  // Captures the value of GTEST_FLAG(catch_exceptions).  This value will be
+  // used for the duration of the program.
+  impl()->set_catch_exceptions(GTEST_FLAG(catch_exceptions));
 
+#if GTEST_HAS_SEH
   const bool in_death_test_child_process =
       internal::GTEST_FLAG(internal_run_death_test).length() > 0;
 
   // Either the user wants Google Test to catch exceptions thrown by the
   // tests or this is executing in the context of death test child
   // process. In either case the user does not want to see pop-up dialogs
-  // about crashes - they are expected..
-  if (GTEST_FLAG(catch_exceptions) || in_death_test_child_process) {
+  // about crashes - they are expected.
+  if (impl()->catch_exceptions() || in_death_test_child_process) {
 #if !GTEST_OS_WINDOWS_MOBILE
     // SetErrorMode doesn't exist on CE.
     SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOALIGNMENTFAULTEXCEPT |
@@ -3818,7 +3847,7 @@ int UnitTest::Run() {
 #endif  // GTEST_HAS_SEH
 
   return HandleExceptionsInMethodIfSupported(
-      impl_,
+      impl(),
       &internal::UnitTestImpl::RunAllTests,
       "auxiliary test code (environments or event listeners)") ? 0 : 1;
 }
@@ -3914,13 +3943,13 @@ UnitTestImpl::UnitTestImpl(UnitTest* parent)
       post_flag_parse_init_performed_(false),
       random_seed_(0),  // Will be overridden by the flag before first use.
       random_(0),  // Will be reseeded before first use.
-#if GTEST_HAS_DEATH_TEST
       elapsed_time_(0),
+#if GTEST_HAS_DEATH_TEST
       internal_run_death_test_flag_(NULL),
-      death_test_factory_(new DefaultDeathTestFactory) {
-#else
-      elapsed_time_(0) {
-#endif  // GTEST_HAS_DEATH_TEST
+      death_test_factory_(new DefaultDeathTestFactory),
+#endif
+      // Will be overridden by the flag before first use.
+      catch_exceptions_(false) {
   listeners()->SetDefaultResultPrinter(new PrettyUnitTestResultPrinter);
 }