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


From: Stefan Monnier
Subject: bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation.
Date: Fri, 05 Sep 2014 13:22:21 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

>> Lisp_Object result = unbind_to (count, Fsome_func ());
>> can always be written
>> Lisp_Object result = Fsome_func ();
>> unbind_to (count, Qnil);
> Only if the result is already protected, since unbind_to can GC.

Indeed, if you need GCPRO, then it's not necessarily true any more.


        Stefan





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