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From: Eric Blake <eblake@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Peter Maydell <peter.maydell@linaro.org>
Cc: Patch Tracking <patches@linaro.org>,
	Michael Roth <mdroth@linux.vnet.ibm.com>,
	QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH] qga/commands-posix.c: Use correct types with g_base64_decode()
Date: Tue, 14 Apr 2015 08:35:30 -0600	[thread overview]
Message-ID: <552D25B2.4010002@redhat.com> (raw)
In-Reply-To: <552D2451.5040403@redhat.com>

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On 04/14/2015 08:29 AM, Paolo Bonzini wrote:
> But you can: gsize is defined to be "An unsigned integer type of the
> result of the sizeof operator, corresponding to the size_t type defined
> in C99.

Good so far.

> This type is wide enough to hold the numeric value of a pointer,

Not true on platforms where size_t is 32 bits but pointers are 64 bits.
 Bug in glib documentation.

> 
> If anything, I would add a QEMU_BUILD_BUG_ON(sizeof(gsize) !=
> sizeof(size_t)) to catch the problem, since we've had many experienced
> developers caught unprepared.

That would be my preference as well.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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  reply	other threads:[~2015-04-14 14:35 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-08 20:02 [Qemu-devel] [PATCH] qga/commands-posix.c: Use correct types with g_base64_decode() Peter Maydell
2015-04-08 20:14 ` Michael Roth
2015-04-14 13:38 ` Thomas Huth
2015-04-14 13:41   ` Peter Maydell
2015-04-14 14:30     ` Paolo Bonzini
2015-04-14 13:42 ` Paolo Bonzini
2015-04-14 13:45   ` Peter Maydell
2015-04-14 14:29     ` Paolo Bonzini
2015-04-14 14:35       ` Eric Blake [this message]
2015-04-14 14:50         ` Paolo Bonzini
2015-04-14 15:12           ` Eric Blake
2015-04-14 14:36       ` Peter Maydell

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