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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH] Permit zero-sized qemu_malloc() & friends
Date: Mon, 7 Dec 2009 16:24:00 +0000
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Kevin Wolf <kwolf@redhat.com>, Avi Kivity <avi@redhat.com>, Markus Armbruster <armbru@redhat.com>, qemu-devel@nongnu.org

> type *qemu_new(type, n_types);
> type *qemu_new0(type, n_types);
> 
> type *qemu_renew(type, mem, n_types);
> type *qemu_renew0(type, mem, n_types);

It always annoys me having to specify element count for things that aren't 
arrays.

I suggestion a single object allocation function, and an array allocation 
function that allows zero length arrays. Possibly also a must-not-be-zero 
array form if we think it's important.

Note that conversion to object/type based allocation is not always 
straightforward because inheritance means we don't have the final object type 
when doing the allocation.

Paul