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Date: Tue, 08 Oct 2013 17:36:00 -0000
From: Andrew Haley <aph@redhat.com>
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To: Anthony Green <green@moxielogic.com>
CC: Igor Bogomazov <ygrex@ygrex.ru>,        "libffi-discuss@sourceware.org" <libffi-discuss@sourceware.org>
Subject: Re: return value buffer malloc()'ed vs alloca()'ed
References: <20131008101354.43baeeeb@ygrex-mac> <CACxje58LTEpBiaUHQn6Bp=Puvmz-Sg7gReGrWfz2Nz-diZG4GA@mail.gmail.com>
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On 10/08/2013 06:30 PM, Anthony Green wrote:
> The result
> buffer needs to be the largest native integral type on your system.
> Use a 64 bit long for rc instead of mallocing the exact return type
> size.  You can pass it into ffi_call as &rc and simply cast it to an
> int at the end.   I just checked the docs and it's definitely not
> clear

Hmmmmm.  It's not so much unclear as completely wrong.

Andrew.