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Date: Wed, 14 Oct 2009 15:14:33 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: [Qemu-devel] Re: [PATCH 5/9] monitor: QError support
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To: Markus Armbruster <armbru@redhat.com>
Cc: aliguori@us.ibm.com, kraxel@redhat.com, qemu-devel@nongnu.org, Luiz Capitulino <lcapitulino@redhat.com>

On 10/13/2009 11:59 PM, Markus Armbruster wrote:
>> >  +void qemu_error_structed(QErrorCode code, const char *fmt, ...);
> Needs __attribute__((format(printf, 2, 3))).

If I read the code correctly, qemu_object_from_va is what in the end 
processes the valist and it is not exactly compatible with printf 
syntax.  For example, in patch 7/9 you have

      qemu_error_structed(QERR_QDEV_NFOUND, "{ s: s }", "name", driver);

Paolo