Re: [RFA] Don't use thread_db on corefiles

[Andrew Cagney <ac131313@cygnus.com>]

> This only works if you're debugging on a very similar host to the one
> the core was dumped on.  If you've got, say, a glibc 2.1.3 host and are
> looking at a glibc 2.2.3 core... well, you can provide target libraries
> and make GDB use those, but there's no way to provide a cross
> libthread_db.


Yep.


> Are we really comfortable with that?  This'll probably cause GDB to
> misbehave in arbitrarily unpredictable ways in that circumstance.  And
> we've no way to detect it that I can see.


By misbehave I guess you mean exibit non-deterministic behavour.  Using 
the current source base, either the GDB build is native and thread-db is 
included (and full thread support in core files is available) XOR GDB is 
a cross, thread-db is not included, and full thread support of core 
files is not available.  I think this is pretty deterministic.

As far as I know, these limitations are exactly the same as for GDB and 
shared libraries.  It just so happens that, for shared libraries, things 
are a little (lot) further down the road of getting the technical 
problems fixed.

Andrew