I confirm that it works with gdb 2003-05-30 19:00:00 UTC, and does not work with gdb 2003-05-30 20:00:00 UTC. That's the same point where the other backtrace PR's broke (gdb/1250, gdb/1253, gdb/1255), with the big frame changeover. I don't have time to expectify it tonight either, but I may get to it tomorrow if no one beats me to it. Michael C