quadratic slowdown in 'where' command

[Tom Tromey]

>>>>> "Paul" == Paul Pluzhnikov <ppluzhnikov@google.com> writes:

Paul> While debugging something else, I noticed extreme slowdown of
Paul> 'where' command for a deeply recursive stack trace, and was able
Paul> to reproduce it on a small example (below).

FWIW, I'm able to reproduce this as well.

Paul> The results are also rather interesting: running 'where' by hand
Paul> shows that GDB prints all levels except the last one rather fast,
Paul> but then 'freezes' for a long time printing the last level.

I wasn't able to reproduce this.  That is, I ran the test a number of
times, and sometimes I saw this effect, but sometimes I did not.

Could you file this in bugzilla?

Tom