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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re: block variables
Message-ID: <6692@brl-smoke.ARPA>
Date: Wed, 18-Nov-87 09:48:31 EST
Article-I.D.: brl-smok.6692
Posted: Wed Nov 18 09:48:31 1987
Date-Received: Sat, 21-Nov-87 04:41:29 EST
References: <189@dalcsug.UUCP> <102600020@datacube>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 9

In article <102600020@datacube> ftw@datacube.UUCP writes:
>Space for "k" is alloctaed when the block under the "for" loop is entered,
>and de-allocated on the way out, rather than being re-allocated for each
>iteration of your loop.

Actually, most reasonable compilers allocate enough space for the
deepest contained block at entry to a function, then when execution
enters the block, the preallocated space is simply used without
having to perform any explicit allocation at that point.