Debugging sub-processes with gdb

Wed May 14 15:26:00 GMT 2014

On Wed, May 14, 2014 at 04:10:36PM +0100, Henry S. Thompson wrote:
>I'm trying to debug a problem with xemacs that involves the child
>process forked when you execute M-x shell.
>>None of the mechanisms in the gdb documentation for choosing to step
>into the child process (instead of the parent) after a fork() seem to
>work for me. That is, in particular, setting follow-for-mode to child
>still leaves me in the parent after stepping over a fork().
>>Setting detach-on-fork to 'off' also seems to have no effect.
>>Have I misunderstood something, or does this aspect of gdb just not
>work under cygwin (x86_64, 1.7.29-2)?

Debugging subprocesses doesn't work for Windows gdb. Sorry.
If you have control over the code you could have it print a pid, wait,
and then attach to it with gdb. That works.
cgf
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