From: Eric Blake <eblake@redhat.com>
To: Programmingkid <programmingkidx@gmail.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
qemu-devel qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] CMSG_SPACE() causing compile time error on Mac OS X
Date: Mon, 18 Jan 2016 10:45:54 -0700 [thread overview]
Message-ID: <569D24D2.3000800@redhat.com> (raw)
In-Reply-To: <1866CB23-7966-4F68-8925-2C3888753883@gmail.com>
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On 01/17/2016 04:45 PM, Programmingkid wrote:
>> What's the definition of the CMSG_SPACE macro under OS X?
>>
>> Paolo
>
> #define CMSG_SPACE(l) (__DARWIN_ALIGN32(sizeof(struct cmsghdr)) + __DARWIN_ALIGN32(l))
And the definition of __DARWIN_ALIGN32()?
It looks like the definition is not properly resulting in a compile-time
constant, and therefore the warning about the initializer is resulting
because you can't initialize a dynamically-sized array. But you still
haven't shown us why the headers are resulting in a non-constant size.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2016-01-18 17:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-17 22:23 [Qemu-devel] CMSG_SPACE() causing compile time error on Mac OS X Programmingkid
2016-01-17 23:22 ` Paolo Bonzini
2016-01-17 23:45 ` Programmingkid
2016-01-18 17:45 ` Eric Blake [this message]
2016-01-18 17:59 ` Peter Maydell
2016-01-18 19:46 ` Programmingkid
2016-01-18 19:50 ` Programmingkid
2016-01-18 20:49 ` Peter Maydell
2016-01-18 21:09 ` Programmingkid
2016-01-18 22:09 ` Peter Maydell
2016-01-19 1:23 ` Programmingkid
2016-01-19 23:49 ` Programmingkid
2016-01-18 9:58 ` Daniel P. Berrange
2016-01-18 14:36 ` Programmingkid
2016-01-19 14:06 ` Daniel P. Berrange
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