[RFA] Only try to load libthread_db when we load libpthread.

[Pedro Alves]

On Wednesday 05 October 2011 19:27:05, Doug Evans wrote:
> 2011-10-05  Doug Evans  <dje@google.com>
> 
>         * linux-thread-db.c (thread_db_new_objfile): Only try to load
>         libthread_db when we load libpthread.

Makes sense to me.

> No regressions in amd64-linux,
> but I can imagine it misses some cases.

Yeah.  I think we'll no longer activate thread_db when debugging core
files of static executables (e.g., a core of gdb.threads/staticthreads).
It works with live debugging since we call check_for_thread_db
from linux_child_post_attach/linux_child_post_startup_inferior.
Maybe moving that to an inferior_created observer in
linux-thread-db.c would work.

-- 
Pedro Alves