Re: [rfa] Include the LWP in thread-db's PTIDs

[Andrew Cagney <cagney@gnu.org>]

> I hadn't thought about the core issue; I'll do some pondering. However,
> I don't think your comment is quite right.  Thread_db can not be
> layered over core files, we've already decided that - it's too iffy to
> find the right thread_db, not to mention cross-debugging issues.  And
> similarly we can't use it for remote thread debugging.  Thread_db only
> makes any sense on top of local, running, native threads.

"we"'ve definitly not decided this.

Long ago you committed a hack to stop GDB layering thread-db over core 
files.  It was to stop GDB barfing on native GNU/Linux core files.  It 
had the side effect of breaking threads on all other systems, namely 
solaris.  What keeps being pointing out is that thread-db should be 
loaded over a core file, and not doing it is broken.

If we try it and it barfs, we've a bug.  But what we've not got is an 
excuse for hobble native support (just because embedeed debuging is "iffy").

Andrew