bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation.

[Dmitry Antipov]

On 09/05/2014 10:08 AM, Paul Eggert wrote:

> Attached is a patch to fix the unbounded alloca calls that I found when 
> auditing the Emacs source.
> I'm sending this to bug-gnu-emacs to give Eli a heads-up, as some of the fixes 
> affect Windows code.
> This patch is relative to Emacs trunk bzr 117822.

If __GNUC__, can't we use __attribute__ ((cleanup (freeing_function))) for 
implicit calls
to SAFE_FREE, similar to destructors in C++?

Dmitry