I'm trying to debug a segmentation fault (11) from drush. I have xdebug installed. The command it's giving the error is the pm-disable.
$ drush dis "module" --debug --verbose: ...
Calling hook drush_pm_disable [11.17 sec, 84.08 MB] [debug] Segmentation fault: 11
I think the issue is when it is calculating the dependencies, as I was also getting this on features/create, but disabling the dependencies checkbox in the features settings makes the features/create work well.