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Re: [PATCH] manual: Update alloca and variable length array documentation

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Florian Weimer <fweimer at redhat dot com>
Cc: GNU C Library <libc-alpha at sourceware dot org>
Date: Fri, 11 Aug 2017 11:28:16 -0700
Subject: Re: [PATCH] manual: Update alloca and variable length array documentation
Authentication-results: sourceware.org; auth=none
References: <63922f93-860a-249a-c14c-7efea3a3189b@redhat.com>

Thanks, this looks good, with one quibble:

+Compared to @code{malloc}, variable length arrays share the same+advantages and disadvantages as @code{alloca}.  In particular, there is+no error checking (and security vulnerabilities can result from large+allocation requests), and some @nongnusystems{} do not support variable+length arrays because they only support earlier versions of ISO C which+do not include variable length arrays.

The last 2 lines are obsolete. Although C99 required VLAs, a standardC11 implementation that defines __STDC_NO_VLA__ need not support VLAs. Isuggest removing " because they only support earlier versions of ISO Cwhich do not include variable length arrays".

References:
- [PATCH] manual: Update alloca and variable length array documentation
  - From: Florian Weimer

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