Re: GDB 15/16 crashing in add_thread_silent()

[Paul Smith via Gdb <gdb@sourceware.org>]

On Tue, 2025-11-18 at 11:33 -0700, Tom Tromey wrote:
> > > > > > "Paul" == Paul Smith via Gdb <gdb@sourceware.org> writes:
> 
> [...]
> Paul> So, there appears to be some difference in binutils where it can't
> Paul> parse this core file properly...?
> 
> Yes, interesting find.
> Unfortunately the next step is probably to bisect binutils to find
> the offending patch.  Or I guess debug and try to find what's going
> wrong.

Yeah.  Unfortunately I will need to gird myself for that and I have a
lot of other things happening.  Bisecting will be a big job since we're
jumping from binutils 2.30 (known to work) to binutils 2.43 (known to
not work).

It's probably worthwhile making some effort at debugging, to try to
narrow down the locations in the code to consider during bisecting.  It
looks like somehow we cannot determine the PID / TID properly in this
core file in newer binutils, while the older binutils can still dig it
out.  Unfortunately I've never looked at any of this code before but
hopefully it will be tractable.

Maybe this weekend I can spend a bit of time on this.