In pure perl (except for possible bugs in the interpreter) there is no way to get buffer overflows: the interpreter manages the memory for its variables without any direct intervention from the language and will just allocate more memory if you try to extend a string, hash or array. This might fail, ofcourse, but that will just shut down the interpreter with an out of memory error.

In C/XS extensions, there is just as much possibility for buffer overflows as in pure C, because they are basically written in C (give or take a few hundred macros and some other preprocessing).

In other words, it seems to me you're asking for the impossible or the obvious. See perlxs for the obvious answer.

update: to find the top of the perl stack (which is not really where the environment variables are kept) see caller

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Finding stack addresses by Joost
in thread Finding stack addresses by perianmellon

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