Migrate WebRequestRedirectByRegExAction to use RE2 and roll RE2 to revision 97:401ab4168e8e

third_party/re2/util/logging.h

 // Copyright 2009 The RE2 Authors.  All Rights Reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // Simplified version of Google's logging.
 
 #ifndef RE2_UTIL_LOGGING_H__
 #define RE2_UTIL_LOGGING_H__
 
 #ifndef WIN32
@@ skipping 35 matching lines @@
 #define LOG_DFATAL LOG_ERROR
 #else
 #define DEBUG_MODE 1
 #define LOG_DFATAL LOG_FATAL
 #endif
 
 #define LOG(severity) LOG_ ## severity.stream()
 
 class LogMessage {
  public:
-  LogMessage(const char* file, int line) {
+  LogMessage(const char* file, int line) : flushed_(false) {
     stream() << file << ":" << line << ": ";
   }
-  ~LogMessage() {
+  void Flush() {
     stream() << "\n";
     string s = str_.str();
     if(write(2, s.data(), s.size()) < 0) {}  // shut up gcc
+    flushed_ = true;
+  }
+  ~LogMessage() {
+    if (!flushed_) {
+      Flush();
+    }
   }
   ostream& stream() { return str_; }
  
  private:
+  bool flushed_;
   std::ostringstream str_;
   DISALLOW_EVIL_CONSTRUCTORS(LogMessage);
 };
 
 class LogMessageFatal : public LogMessage {
  public:
   LogMessageFatal(const char* file, int line)
     : LogMessage(file, line) { }
   ~LogMessageFatal() {
-    std::cerr << "\n";
+    Flush();
     abort();
   }
  private:
   DISALLOW_EVIL_CONSTRUCTORS(LogMessageFatal);
 };
 
 #endif  // RE2_UTIL_LOGGING_H__