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Re: [Qemu-devel] [PATCH 1/8] qapi: fix NULL pointer dereference

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 1/8] qapi: fix NULL pointer dereference
Date: Fri, 16 Dec 2011 16:03:48 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20110930 Thunderbird/7.0.1

On 12/16/2011 03:56 PM, Anthony Liguori wrote:
I'd really prefer to stick to non-nullable strings as there is no
obvious way to specify NULL in command line options.

We can leave it as the default. A property with a non-null default is implicitly not nullable, which actually makes some sense. We can model this in get_string/set_string too.

What are the uses of null in qdev string properties?  I know you can't
set a string to null since parse() doesn't have a null syntax.  So we're
really just talking about an uninitialized state, right?

Yes.  No ROM BAR is an example of a NULL string property.


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