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Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netde
From: |
Laszlo Ersek |
Subject: |
Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing |
Date: |
Wed, 06 Jun 2012 19:05:58 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.4) Gecko/20120422 Thunderbird/10.0.4 |
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
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, (continued)
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Andreas Färber, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Laszlo Ersek, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Paolo Bonzini, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Laszlo Ersek, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing,
Laszlo Ersek <=
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Andreas Färber, 2012/06/06
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Laszlo Ersek, 2012/06/07
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Andreas Färber, 2012/06/07
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Laszlo Ersek, 2012/06/07
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/07
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Paolo Bonzini, 2012/06/07
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Laszlo Ersek, 2012/06/09
- Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Michael Roth, 2012/06/06
Re: [Qemu-devel] [PATCH 00/16] introduce OptsVisitor, rebase -net/-netdev parsing, Paolo Bonzini, 2012/06/06