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Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample app
From: |
Felipe Franciosi |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application |
Date: |
Thu, 2 Mar 2017 17:21:46 +0000 |
> On 2 Mar 2017, at 17:17, Daniel P. Berrange <address@hidden> wrote:
>
> On Thu, Mar 02, 2017 at 05:01:06PM +0000, Felipe Franciosi wrote:
>> Hi Eric,
>>
>> Ping on this?
>> http://lists.nongnu.org/archive/html/qemu-devel/2016-10/msg06169.html
>
> [snip]
>
>> CC contrib/ivshmem-client/main.o
>>
>> /var/tmp/patchew-tester-tmp-naxuy_ku/src/contrib/libvhost-user/libvhost-user.c:
>> In function ‘vu_panic’:
>>
>> /var/tmp/patchew-tester-tmp-naxuy_ku/src/contrib/libvhost-user/libvhost-user.c:84:5:
>> error: ignoring return value of ‘vasprintf’, declared with attribute
>> warn_unused_result [-Werror=unused-result]
>> (void)vasprintf(&buf, msg, ap);
>> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> cc1: all warnings being treated as errors
>
> You can side-step the issue entirely by simply not using the vasprintf
> function. Instead do 'buf = g_strdup_vprintf(msg, ap);' - glib does
> abort-on-oom, so there's no error scenario you need to handle.
Thanks for the pointer. That code is in libvhost-user already. I can send a
separate patch to fix that if you prefer.
Just think that for this kind of usage a simple ignore_value(vasprintf(...)) is
sufficient; that call is in a panic path already.
There were other cases where ignoring the return value seemed like the
preferred thing to do.
Felipe
>
> Regards,
> Daniel
> --
> |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
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- [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Felipe Franciosi, 2017/03/02
- [Qemu-devel] [PATCH v4 2/3] vus: Introduce vhost-user-scsi host device, Felipe Franciosi, 2017/03/02
- [Qemu-devel] [PATCH v4 1/3] vhost-scsi: create a vhost-scsi-common abstraction, Felipe Franciosi, 2017/03/02
- [Qemu-devel] [PATCH v4 3/3] vus: Introduce a vhost-user-scsi sample application, Felipe Franciosi, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, no-reply, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, no-reply, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, no-reply, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Felipe Franciosi, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Daniel P. Berrange, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application,
Felipe Franciosi <=
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Daniel P. Berrange, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Felipe Franciosi, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Paolo Bonzini, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Felipe Franciosi, 2017/03/02
- Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Eric Blake, 2017/03/02
Re: [Qemu-devel] [PATCH v4 0/3] Introduce vhost-user-scsi and sample application, Michael S. Tsirkin, 2017/03/29