From: Laszlo Ersek <lersek@redhat.com>
To: Michael Roth <mdroth@linux.vnet.ibm.com>
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Andreas Färber" <afaerber@suse.de>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing
Date: Wed, 06 Jun 2012 19:05:58 +0200 [thread overview]
Message-ID: <4FCF8DF6.8050502@redhat.com> (raw)
In-Reply-To: <4FCF8A0F.3020306@redhat.com>
On 06/06/12 18:49, Laszlo Ersek wrote:
> The fallback (*v->type_int)() call stores an int64_t, according to its
> prototype ("interface contract"). IMHO it shouldn't try to communicate a
> mathematical value outside of [INT64_MIN, INT64_MAX]; it should report
> an error in this case.
Suppose the v->type_int() call fails and stores a parse error (and that
correspondingly it doesn't modify "value").
Suppose the subsequent range check fails too. In this case the current
code leaks the first Error object.
I didn't try to fix this here because my series starts with a patch from
Paolo that fixes this leak: once an error is pending, further errors are
thrown away (= not formatted / released). With that fix in place, it
doesn't matter if we enter the (value < 0) branch or not: as long as
type_int keeps error setting and value changing mutually exclusive,
we'll keep the first (= type_int) error and keep the value of *obj too.
Laszlo
next prev parent reply other threads:[~2012-06-06 18:06 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 10:45 [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing Laszlo Ersek
2012-05-22 10:45 ` [Qemu-devel] [PATCH 01/16] qapi: fix error propagation Laszlo Ersek
2012-05-22 10:45 ` [Qemu-devel] [PATCH 02/16] qapi: introduce "size" type Laszlo Ersek
2012-06-05 20:39 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 03/16] expose QemuOpt and QemuOpts struct definitions to interested parties Laszlo Ersek
2012-06-05 20:40 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 04/16] qapi: introduce OptsVisitor Laszlo Ersek
2012-06-05 21:12 ` Paolo Bonzini
2012-06-06 11:12 ` Laszlo Ersek
2012-06-06 12:02 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 05/16] qapi schema: remove trailing whitespace Laszlo Ersek
2012-06-05 20:40 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 06/16] qapi schema: add Netdev types Laszlo Ersek
2012-06-05 21:08 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 07/16] hw, net: "net_client_type" -> "NetClientOptionsKind" (qapi-generated) Laszlo Ersek
2012-06-05 20:41 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 08/16] convert net_client_init() to OptsVisitor Laszlo Ersek
2012-06-05 20:46 ` Paolo Bonzini
2012-06-05 21:07 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 09/16] convert net_init_nic() to NetClientOptions Laszlo Ersek
2012-06-05 20:50 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 10/16] convert net_init_dump() " Laszlo Ersek
2012-06-05 20:51 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 11/16] convert net_init_slirp() " Laszlo Ersek
2012-06-05 20:53 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 12/16] convert net_init_socket() " Laszlo Ersek
2012-06-05 21:02 ` Paolo Bonzini
2012-06-05 21:14 ` Eric Blake
2012-06-05 21:27 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 13/16] convert net_init_vde() " Laszlo Ersek
2012-06-05 21:04 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 14/16] convert net_init_tap() " Laszlo Ersek
2012-05-22 10:45 ` [Qemu-devel] [PATCH 15/16] convert net_init_bridge() " Laszlo Ersek
2012-06-05 21:05 ` Paolo Bonzini
2012-06-06 12:16 ` Laszlo Ersek
2012-06-06 14:13 ` Paolo Bonzini
2012-05-22 10:45 ` [Qemu-devel] [PATCH 16/16] remove unused QemuOpts parameter from net init functions Laszlo Ersek
2012-06-05 21:06 ` Paolo Bonzini
2012-06-05 21:13 ` [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing Paolo Bonzini
2012-06-06 13:03 ` Laszlo Ersek
2012-06-06 13:31 ` Andreas Färber
2012-06-06 14:10 ` Paolo Bonzini
2012-06-06 14:34 ` Andreas Färber
2012-06-06 14:43 ` Paolo Bonzini
2012-06-06 15:16 ` Michael Roth
2012-06-06 15:30 ` Laszlo Ersek
2012-06-06 15:58 ` Michael Roth
2012-06-06 16:14 ` Michael Roth
2012-06-06 16:47 ` Paolo Bonzini
2012-06-06 16:49 ` Laszlo Ersek
2012-06-06 17:05 ` Laszlo Ersek [this message]
2012-06-06 20:09 ` Michael Roth
2012-06-06 20:59 ` Andreas Färber
2012-06-07 11:32 ` Laszlo Ersek
2012-06-07 12:17 ` Andreas Färber
2012-06-07 11:29 ` Laszlo Ersek
2012-06-07 15:29 ` Michael Roth
2012-06-07 15:46 ` Paolo Bonzini
2012-06-09 11:21 ` Laszlo Ersek
2012-06-06 15:31 ` Michael Roth
2012-06-06 14:09 ` Paolo Bonzini
2012-06-09 15:30 ` Laszlo Ersek
2012-06-11 7:06 ` Paolo Bonzini
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