| From: | Matthew Kirkwood <matthew(at)hairy(dot)beasts(dot)org> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Gaetano Mendola <mendola(at)bigfoot(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Preventing stack-overflow crashes (improving on |
| Date: | 2003-12-31 17:49:49 |
| Message-ID: | Pine.LNX.4.58.0312311749190.13563@sphinx.mythic-beasts.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On Wed, 31 Dec 2003, Tom Lane wrote:
> > Is ABS enough on a 64-bit architecture ?
>
> That was pseudocode, I wasn't actually planning to rely on a function.
> Something more like
>
> long diff;
FWIW, ISO has a ptrdiff_t, which may be useful here.
Matthew.
> diff = stack_base_ptr - &stack_top_loc;
> if (diff < 0)
> diff = -diff;
> if (diff > max)
> elog ...
>
> regards, tom lane
>
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