[Bug middle-end/13182] -fstack-check probes too distant when allocating on stack

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13182

--- Comment #7 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #6)
> That's as expected: the probing mechanism maintains a protection area so the
> program can recover from a stack overflow condition by raising an exception.
> That's why it always probes a few pages ahead but, once the first few pages
> are skipped at the entry point, every subsequent page is probed.

I'm not sure if the the probing offset is large enough for this purpose because
the kernel keeps pushing more and more data onto the stack during signal
handling:

  https://sourceware.org/bugzilla/show_bug.cgi?id=20305