Re: another bug: zsh_directory_name

[Peter Stephenson <pws@csr.com>]

Oliver Kiddle wrote:
> Peter Stephenson wrote:
> > so the problem is that the max function depth is too large on those
> > systems (or, equivalently, the resource limits are too small).
> 
> Probably so but it should be noted that I get the seg fault on systems
> with 4.3.9 where older versions of zsh print the "maximum nested function
> level reached" message. Has some change meant that more stack space is
> being used than before when calling functions recursively?

The function stack debugging information is now larger.

It also runs a dupstring() at each level to save the name of the file
from which the function was loaded; although this doesn't affect the
stack, it is quite inefficent, but I think the "shfunc" structure can be
removed at any time so it's not easy to do better.

We can reduce the maximum function depth if it's getting flaky on too
many systems.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070