Merge pull request #27 from chungongyu/dev-c++11

fix: coredump fixed

src/main.cpp

@@ -14,6 +14,10 @@
 static log4cxx::LoggerPtr logger(log4cxx::Logger::getLogger("arcs.main"));
 
 int main(int argc, char* argv[]) {
+ // Synchronizing iostreams with printf-style I/O can be costly. 
+ // std::cin and std::cout are by default synchronized with printf.
+ std::ios::sync_with_stdio(false);
+
  if (argc < 2) {
  return RunnerManager::get()->help(argc, argv);
  }

src/preprocess.cpp

@@ -68,7 +68,7 @@ class Preprocess : public Runner {
  }
 
  // process
- if (*out) {
+ if (out != NULL) {
  Statistics stats;
  if ((r = processReads(options, filelist, *out, stats)) == 0) {
  // report statistics