How to generate stackdump & dumped register when an app crashes in gcc

[vlc_chowdary]

When my c++ app crashes I would like to generate stackdump and display dumped register values.

My app runs on Fedora Linux 2.6 .

I would like my program to be able to generate stackdump and display dumped register values when it crashes and the next time the user run's it, it will ask them if it is ok to send these to me so I can track down the problem. I can handle the stacktrace info but I don't know how to generate these two things. Any ideas?

Advance thanks to all repliers

Thank you vlc

[Rubberman]

You need to enable your system to dump core files when a crash occurs. From the 'core' man page:

   Piping core dumps to a program
       Since kernel 2.6.19, Linux supports an alternate syntax for the  /proc/sys/kernel/core_pattern  file.   If  the
       first  character  of this file is a pipe symbol (|), then the remainder of the line is interpreted as a program
       to be executed.  Instead of being written to a disk file, the core dump is given as standard input to the  pro-
       gram.  Note the following points:

       *  The  program must be specified using an absolute pathname (or a pathname relative to the root directory, /),
          and must immediately follow the ’|’ character.

       *  The process created to run the program runs as user and group root.

       *  Command-line arguments can be supplied to the program (since kernel 2.6.24), delimited by white space (up to
          a total line length of 128 bytes).

       *  The  command-line  arguments can include any of the % specifiers listed above.  For example, to pass the PID
          of the process that is being dumped, specify %p in an argument.