DebuggingProgramCrash

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= DebuggingProgramCrash =
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  a. Install the development scripts: {{{
sudo apt-get install devscripts
}}}
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DEB_BUILD_OPTIONS="nostrip noopt" sudo apt-get source -b <package> export DEB_BUILD_OPTIONS="nostrip noopt"
sudo apt-get source -b <package>
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sudo dpkg --install <package.deb> sudo debi <package*.changes>
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 1. Start the program under control of `gdb`: {{{
gdb <program>
(gdb) run <arguments, if any>
}}}
 1. The program will start. Perform any actions necessary to reproduce the crash
 1. Retrieve a backtrace of the crash: {{{
(gdb) thread apply all bt full }}}

 1. Include the complete output from gdb in your bug report		  1. Now you make a ["Backtrace"].
 1. You can also run ["Valgrind"], if the program crashes with a "Segmentation fault" or "Bus error".
 1. Optionally, you may be asked to produce an ["Strace"].
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CategoryDocumentation

  1. Check if the package has a debugging version available. In general, debugging packages will be named with a -dbg suffix

  2. If not, you can generally* build one this way:

    1. Install the development scripts: 

      sudo apt-get install devscripts

    2. Install the build-time dependencies for the package: 

      sudo apt-get build-dep <package>

    3. Build .debs for debugging: 

      export DEB_BUILD_OPTIONS="nostrip noopt"
sudo apt-get source -b <package>

    4. Install the needed .debs (they will be in the current working directory if the build succeeded): 

      sudo debi <package*.changes>
  3. Now you make a ["Backtrace"].
  4. You can also run ["Valgrind"], if the program crashes with a "Segmentation fault" or "Bus error".
  5. Optionally, you may be asked to produce an ["Strace"].

* most of the packages support the build of debugging version in this way. If that doesn't work for a package you can open a bug against it.

CategoryDocumentation

DebuggingProgramCrash (last edited 2026-01-27 15:38:17 by sombrafam)