[PATCH] Remove stale breakpoint step-over information

[Pedro Alves]

On 10/19/19 8:10 PM, Maciej W. Rozycki wrote:

> Correct the issue by making a call to clear global breakpoint step-over 
> information from `exit_inferior_1', which is where we already do all 
> kinds of similar clean-ups, e.g. `delete_thread' called from there 
> clears per-thread step-over information.
> 

This looks like a fragile place to clear this, considering
multiprocess.  I.e., what if we're calling exit_inferior for some
inferior other than the one that was stepping.

The step over information is associated with a thread.
I think it'd be better to clear the step over information
when the corresponding thread is deleted.

So something like adding a thread_info parameter to
clear_step_over_info, and then calling clear_step_over_info
from clear_thread_inferior_resources.  clear_step_over_info
would only clear the info if the thread matched, or if NULL
is passed.  Would that work?

Thanks,
Pedro Alves