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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 18:49:19 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.4) Gecko/20120422 Thunderbird/10.0.4 |
On 06/06/12 18:14, Michael Roth wrote:
> On Wed, Jun 06, 2012 at 05:30:03PM +0200, Laszlo Ersek wrote:
>> value < 0
>
> I think this last one will cause problems though, since uint64_t's
> within the valid range for visit_type_uint64() will fail due to being
> interpreted as < 0 when cast to int64_t. With the others we can detect
> these cases since the max unsigned value doesn't exceed the max signed
> value of the intermediate type we're storing to.
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. If a visitor genuinely wants to parse and store
2^63 for example, it should implement the "type_uint64" interface.
Anyway I've been called "inflexible" before. I can send a v2 if you wish.
Thanks,
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, Laszlo Ersek, 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, 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 <=
- 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, 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