[Boost-users] [program_options] crash on application exit

From: ope (ope-devel_at_[hidden])
Date: 2008-01-22 13:53:14

Hi,

to get the main() more clean, I moved the command line options parser to 
an own class (some stuff missing):

---8---
     class CommandLineOptions
     {
     public:
         CommandLineOptions( int argc, char** argv );

     private:
         po::options_description generic_options;
         po::options_description qt4_common;
#if defined( Q_OS_UNIX ) || defined( Q_OS_MAC )
         po::options_description qt4_x11;
#endif
#if defined( Q_OS_WIN )
         po::options_description qt4_win;
#endif
#if defined DEBUG
         po::options_description qt4_dbg;
#endif
         po::options_description hidden_options;
         po::options_description usage_options;
         po::options_description cmdline_options;
         po::positional_options_description pos_options;
         po::variables_map vm;
     };
--->8---

with

---8<---
CommandLineOptions::CommandLineOptions( int argc, char** argv )
     : generic_options("Generic options"),
       qt4_common("Qt options"),
#if defined( Q_OS_UNIX ) || defined( Q_OS_MAC )
       qt4_x11( "Qt X11 specific options" ),
#endif
#if defined( Q_OS_WIN )
       qt4_win( "Qt Windows specific options" ),
#endif
#if defined( DEBUG )
       qt4_dbg( "Qt debug options" ),
#endif
       hidden_options("Hidden options")
{
     generic_options.add_options()
         ( "version,v", "print version string")
         ( "help,h", "produce help message")
         ;

     hidden_options.add_options()(...);

     qt4_common.add_options()(...
#if defined( Q_OS_UNIX ) || defined( Q_OS_MAC )
     qt4_x11.add_options()(...
#if defined( Q_OS_WIN )
     qt4_win.add_options()(...
#if defined( DEBUG )(...

     usage_options
         .add( generic_options )
         .add( qt4_common )
#if defined( Q_OS_UNIX ) || defined( Q_OS_MAC )
         .add( qt4_x11 )
#elif defined( Q_OS_WIN )
         .add( qt4_win )
#endif
#if defined( DEBUG )
         .add( qt4_dbg )
#endif
         ;

     cmdline_options.add( usage_options ).add( hidden_options );

     pos_options.add( "input-file", -1 );

     po::store(po::command_line_parser(argc, argv).
               options(cmdline_options).positional(pos_options).run(), vm);
     po::notify(vm);

     if (vm.count( "version" )) {
         std::cout << Version() << "\n";
     }
     ...
}

--->8---

and the main():

---8<---
int main( int argc, char **argv )
{
     try {

         logging::init();

         CommandLineOptions cmdline( argc, argv );
         QT_REQUIRE_VERSION( argc, argv, QT_VERSION_STR );

         Q_INIT_RESOURCE( workbench );

         QApplication app( argc, argv );

         QMainWindow wb;
         wb.show();

          // using boost.logging v2
         L_ << "execute application.";

         return app.exec();
     ...
--->8---

It works fine until the app exits. My gdb session wasn't very useful to me:

(gdb) target exec ./edas
(gdb) run
Starting program: /.../edas2/edas
Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb70506c0 (LWP 13445)]
[New Thread 0xb6aa5b90 (LWP 13450)]
28:31 [1] execute application.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb70506c0 (LWP 13445)]
0x08051980 in ?? ()
(gdb) backtrace
#0  0x08051980 in ?? ()

If I comment out my CommandLineOptions class instance it works.

Thanks,
Olaf