bug#55672: 29.0.50; Emacs crashes when calling start-process-shell-command xdg-open with process-connection-type set to nil

[Po Lu]

Ihor Radchenko <yantar92@gmail.com> writes:

> However, I tried to play around with alternative ways to pass
> parameters. Using run -q -xrm '...' appears to work.

The problem is a process filter causing `x_clear_frame' to be called on
a frame whose GCs have not yet been realized.  That should actually be
impossible.

Can you evaluate the following lines in that gdb session, and show the
output?

  up 6
  p *f->output_data.x

Thanks.