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Re: [Qemu-devel] [PATCH V3 1/7] monitor: discard global variable *cur_mo
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH V3 1/7] monitor: discard global variable *cur_mon in completion functions |
Date: |
Fri, 28 Jun 2013 07:42:05 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 |
On 06/27/2013 08:25 PM, Wenchao Xia wrote:
>>> + readline_add_completion(mon->rs, file);
>>> }
>>> }
>>> closedir(ffs);
>>
>> Oops, I started reviewing that before noticing you posted a v3. At any
>> rate, my review of v2 still stands on this patch. Meanwhile, I just
>> barely noticed that this pre-existing code might cause a -Wshadow
>> warning in the future if <strings.h> is ever included. I'm not sure
>> what qemu's policy is on being clean against -Wshadow warnings, but I
>> personally tend to avoid local variables whose name might conflict with
>> global functions.
>>
> Thanks for reviewing. I'll fix what you mentioned in v2.
>
> For the -Wshadow warning, I guess you mean "file" right?
No, I meant ffs. ffs() is a global function, in scope if <strings.h> is
included; so using it as a local variable name will trigger -Wshadow
warnings from (at least some versions of) gcc.
> It would
> be a bit hard to check this warning for new patch, since this warning
> now exist in many code. In my opinion, it would be better to have a
> separate series to clean up this warnings first, then check new patches
> for this issue.
Agreed that the issue (of using ffs as a local variable name) is
pre-existing, and therefore cleanups for -Wshadow are not related to
this series and not something you need to necessarily worry about.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- [Qemu-devel] [PATCH V3 0/7] monitor: support sub command group in auto completion and help, Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 2/7] monitor: discard global variable *mon_cmds, Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 3/7] monitor: discard global variable *info_cmds in help functions, Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 4/7] monitor: code move for parse_cmdline(), Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 5/7] monitor: support sub commands in auto completion, Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 6/7] monitor: improve "help" in auto completion for sub command, Wenchao Xia, 2013/06/26
- [Qemu-devel] [PATCH V3 7/7] monitor: improve "help" to allow show tip of single command in sub group, Wenchao Xia, 2013/06/26