# Gdb and stopping at assert or segmentation faults

Kris Thielemans kris.thielemans@csc.mrc.ac.uk
Wed Jun 29 19:06:00 GMT 2005

Hi Brian

> You need to set the 'error_start' parameter of the CYGWIN
> environment variable to the (windows) path of gdb.
>

I think what you're saying is that if I do this, it will launch gdb on the
crash? Ok.

However, what I was saying is that I would like to be able to backtrace when
I launch a program from within gdb:

Gdb myprog
Run
<assert or segmentation fault>
Info stack

> You can also call cygwin_internal (CW_DEBUG_SELF,
> "c:\\path\\to\\gdb.exe") in your code to force a fault.
>
Ok. That's useful as well. Thanks!

Kris

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