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From: Stefan Hajnoczi <stefanha@gmail.com>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: John Snow <jsnow@redhat.com>,
	xen-devel@lists.xenproject.org, qemu-s390x@nongnu.org,
	"qemu-ppc@nongnu.org list:PowerPC" <qemu-ppc@nongnu.org>,
	qemu-devel <qemu-devel@nongnu.org>,
	Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] compiler: add a sizeof_field() macro
Date: Fri, 15 Jun 2018 08:59:34 +0100	[thread overview]
Message-ID: <CAJSP0QU2BLvBVgtwSmNzip-7Kf=LzsrvbBjv87D9FLiswH=o0g@mail.gmail.com> (raw)
In-Reply-To: <c5c1f362-d51d-df1e-c1dd-f57b64c3f1a1@amsat.org>

On Thu, Jun 14, 2018 at 9:33 PM, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> On 06/14/2018 04:17 PM, John Snow wrote:
>> On 06/14/2018 12:44 PM, Stefan Hajnoczi wrote:
>>> Determining the size of a field is useful when you don't have a struct
>>> variable handy.  Open-coding this is ugly.
>>>
>>> This patch adds the sizeof_field() macro, which is similar to
>>> typeof_field().  Existing instances are updated to use the macro.
>>>
>>> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
>>
>> How'd you find all the existing instances?
>
> This works:
>
> $ git grep -E 'sizeof.*)0)->'

Yes, I used a similar grep command-line.

I also checked for "sizeof.*)NULL" but nothing uses that syntax.

Stefan

WARNING: multiple messages have this Message-ID (diff)
From: Stefan Hajnoczi <stefanha@gmail.com>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Cc: qemu-devel <qemu-devel@nongnu.org>,
	qemu-s390x@nongnu.org,
	"qemu-ppc@nongnu.org list:PowerPC" <qemu-ppc@nongnu.org>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	xen-devel@lists.xenproject.org, John Snow <jsnow@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] compiler: add a sizeof_field() macro
Date: Fri, 15 Jun 2018 08:59:34 +0100	[thread overview]
Message-ID: <CAJSP0QU2BLvBVgtwSmNzip-7Kf=LzsrvbBjv87D9FLiswH=o0g@mail.gmail.com> (raw)
In-Reply-To: <c5c1f362-d51d-df1e-c1dd-f57b64c3f1a1@amsat.org>

On Thu, Jun 14, 2018 at 9:33 PM, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> On 06/14/2018 04:17 PM, John Snow wrote:
>> On 06/14/2018 12:44 PM, Stefan Hajnoczi wrote:
>>> Determining the size of a field is useful when you don't have a struct
>>> variable handy.  Open-coding this is ugly.
>>>
>>> This patch adds the sizeof_field() macro, which is similar to
>>> typeof_field().  Existing instances are updated to use the macro.
>>>
>>> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
>>
>> How'd you find all the existing instances?
>
> This works:
>
> $ git grep -E 'sizeof.*)0)->'

Yes, I used a similar grep command-line.

I also checked for "sizeof.*)NULL" but nothing uses that syntax.

Stefan

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  reply	other threads:[~2018-06-15  7:59 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-14 16:44 [Qemu-devel] [PATCH] compiler: add a sizeof_field() macro Stefan Hajnoczi
2018-06-14 19:17 ` John Snow
2018-06-14 19:17   ` John Snow
2018-06-14 20:33   ` Philippe Mathieu-Daudé
2018-06-14 20:33     ` Philippe Mathieu-Daudé
2018-06-15  7:59     ` Stefan Hajnoczi [this message]
2018-06-15  7:59       ` Stefan Hajnoczi
2018-06-18 13:53 ` Stefan Hajnoczi
2018-06-18 13:53   ` Stefan Hajnoczi

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