push and pop

[JD Smith <jdsmith@as.arizona.edu>]

The macros "push" and "pop" in `subr' don't do the same thing as the push
and pop in `cl'.  This means that if you use:

 (eval-when-compile (require 'cl))

in your code, the behavior will change depending on whether the compiled
version is loaded (cl version), or you are interactively debugging (subr
version).  An example of a semantic which will fail with the subr version
but not the cl version:

 (setq ov (pop (cdr ov-list)))

which requires a list argument to pop, instead of the cdr of a list.

Any suggestions on how to work around this (other than the obvious "don't
do that")?

Thanks,

JD