Re: Problem with threaded program

[Andrew Cagney <ac131313@cygnus.com>]

> Daniel,
> 
> I don't know what the division of labor is between gdb and the kernel for situations like this, so I can't comment on that.  I can report, however, that the problem doesn't occur with gdb-4.18.  I had previously tested with an old copy of gdb-4.18.  To remove one possible difference, I have tested for the problem using copies of both gdb-4.18 and gdb-5.1 built today under the 2.4.16 kernel.  gdb-4.18 works properly and gdb-5.1 shows the problem.  If the problem is in the kernel, then 4.18 and 5.1 must be using different capabilities ...
> 

Yes, very, very different:

>> The apparent 4.18 -> 5.0 ``breakage'' would have occured because GDB
>> switched to using the thread-db/kernel interface.

best way to describe this is, unfortunatly, is ``radical surgery''. 
While the new implementation is significantly better and definitly worth 
the effort. however, it is showing up a few teathing problems.  Just 
make certain that your kernel/glibc are recent.

sigh,
Andrew