Re: Avoid C stack overflow

[Paul Eggert]

Stefan Monnier wrote:
> Currently, "MAX_ALLOCA = 16 * 1024", so yes, Emacs is expected to
> occasionally allocate objects larger than your typical 4KB or 8KB
> guard page.

That's easily fixable by adjusting MAX_ALLOCA down to a bit less than 4 
KiB (which is what Gnulib code does) or by arranging for more guard 
pages than usual (more hassle, but eminently doable on most platforms).

Emacs already has a stack-overflow prevention mechanism, right?  And 
we're talking about what to do when the user deliberately disables it? 
So the simplest answer is "don't do that".