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Re: [patch][rfc] Allow GDB to search for the right libthread_db.so.1
On Thu, Apr 30, 2009 at 11:55 AM, Joel Brobecker <email@example.com> wrote:
>> 1. If libthread_db_search_path is set, use it *before* trying to load
>> ? ?libthread_db from the same directory where libpthread was loaded in the
>> ? ?inferior.
> From my naive perspective (never really had a need for this feature),
> it seems better to check the path before checking the path that was
> used by the inferior. ?Otherwise, if the local host has a library
> at the same location but that's different from the library used
> by the inferior, we wouldn't be able to force the debugger to use
> a different library, would we?
Assume inferior is using remote:/a/b/c/libpthread.so.0.
If host has local:/a/b/c/libthread_db.so.0 which is incompatible with
will fail, and GDB will proceed to try other paths in
But I see your point: if local:/a/b/c/libthread_db.so.0 "agrees"
to work with the inferior (td_ta_new returns TD_OK), yet is the wrong one
to use for some reason, there is no way for the user to force GDB to use
an alternate libthread_db.
I'll invert the order of search, get rid of symbol lookup, and send an
updated patch shortly.