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From: Kevin Wolf <kwolf@redhat.com>
To: jcd@tribudubois.net
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] use qemu_malloc and friends consistently
Date: Fri, 29 May 2009 11:38:11 +0200	[thread overview]
Message-ID: <4A1FAD03.9080901@redhat.com> (raw)
In-Reply-To: <20380459.68691243589283394.JavaMail.root@srv-05.w4a.fr>

jcd@tribudubois.net schrieb:
> Thanks for pointing this. I guess it just sounds strange to me that somebody would want to alloc 0 bytes. But why not ...

Yes, this is a corner case. Not useful, but currently allowed and
definitely shouldn't crash the process.

> I guess that if pattern_count/count is set to 0 we can just avoid the all processing of malloc/memset/memcmp/free anyway.
> 
> Would you be ok with something like:
> 
> if (Pflag && pattern_count) {
> 
> instead of: 
> 
> if (Pflag) {

To be honest, the whole point of my mail was to provoke answers like
Anthony's and get qemu_malloc fixed. ;-)

But sure, the change you propose in qemu-io is fine and will make things
work even with current qemu_malloc.

Kevin

  reply	other threads:[~2009-05-29  9:39 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-29  5:58 [Qemu-devel] [PATCH] use qemu_malloc and friends consistently Jean-Christophe Dubois
2009-05-29  8:42 ` Kevin Wolf
2009-05-29  9:05   ` Anthony Liguori
2009-05-29  9:51     ` malc
2009-05-29 10:05       ` Kevin Wolf
2009-05-29 10:23         ` malc
2009-05-29 10:34           ` Kevin Wolf
2009-05-29 10:40             ` malc
2009-05-29 10:49               ` Kevin Wolf
2009-05-29 10:56                 ` Anthony Liguori
2009-05-29 11:06                 ` malc
2009-05-29 11:14                   ` Kevin Wolf
2009-05-29 10:53       ` Anthony Liguori
2009-05-29 11:24         ` malc
2009-05-29 12:36           ` Gerd Hoffmann
2009-05-29 13:07             ` Paul Brook
2009-05-29 13:46               ` Gerd Hoffmann
2009-05-29 13:59               ` Glauber Costa
2009-05-29 14:34               ` Anthony Liguori
2009-05-29 15:06                 ` malc
2009-05-29 17:17               ` Julian Seward
2009-05-29 18:41                 ` Gerd Hoffmann
2009-05-29 21:12                 ` David Turner
2009-05-29 21:13                   ` David Turner
2009-06-02  7:26                   ` Gerd Hoffmann
2009-06-02  7:47                     ` Anthony Liguori
2009-06-02  8:58                       ` Daniel P. Berrange
2009-06-02 18:03                         ` David Turner
2009-06-02  8:48                     ` Avi Kivity
2009-06-02 18:02                     ` David Turner
2009-06-02 18:13                       ` Paul Brook
2009-06-02 19:49                         ` David Turner
2009-06-02 20:04                           ` Paul Brook
2009-06-02 20:42                             ` David Turner
2009-06-02 20:45                               ` Gerd Hoffmann
2009-06-02 20:48                               ` Gerd Hoffmann
2009-06-02 20:58                               ` Paul Brook
2009-06-02 21:19                                 ` David Turner
2009-06-02 19:03                       ` Avi Kivity
2009-05-29 12:51           ` Markus Armbruster
2009-05-29 10:57       ` Gerd Hoffmann
2009-05-29 11:28         ` malc
2009-05-29  9:28   ` jcd
2009-05-29  9:38     ` Kevin Wolf [this message]
2009-06-01 11:59     ` Jamie Lokier
     [not found] <18212122.68761243590277678.JavaMail.root@srv-05.w4a.fr>
2009-05-29 10:00 ` jcd
2009-05-29 10:10   ` Kevin Wolf
     [not found] <2171027.69001243598252547.JavaMail.root@srv-05.w4a.fr>
2009-05-29 12:00 ` jcd
2009-05-29 12:05   ` Kevin Wolf
2009-05-29 12:13     ` jcd
2009-05-29 12:32   ` Markus Armbruster
2009-05-29 12:38     ` jcd
     [not found] <28932640.69341243603994530.JavaMail.root@srv-05.w4a.fr>
2009-05-29 13:35 ` jcd
     [not found] <28912134.69441243608238156.JavaMail.root@srv-05.w4a.fr>
2009-05-29 14:46 ` jcd
     [not found] <33383337.69831243610071896.JavaMail.root@srv-05.w4a.fr>
2009-05-29 15:15 ` jcd
     [not found] <1758936.71791243858884274.JavaMail.root@srv-05.w4a.fr>
2009-06-01 12:24 ` jcd
2009-06-01 23:46   ` Jamie Lokier

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