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Re: Strange warning in C++11 range based for loop

From: Marc Glisse <marc dot glisse at inria dot fr>
To: Ian Lance Taylor <iant at google dot com>
Cc: Jonathan Wakely <jwakely dot gcc at gmail dot com>, Pavel Dzhioev <dzhioev at gmail dot com>, gcc-help at gcc dot gnu dot org
Date: Tue, 30 Aug 2011 18:59:45 +0200 (CEST)
Subject: Re: Strange warning in C++11 range based for loop
References: <CAFQpGzL5si2A1z_HubHAH_niX+1xh2tMLEiG=HTqAzPibZpFUw@mail.gmail.com> <CAH6eHdRbbc7C5JHtwkAvkOPXb4TaC9ogOVKu=fNE5MJPpeQKVw@mail.gmail.com> <mcraaaqvowf.fsf@coign.corp.google.com>
Reply-to: gcc-help at gcc dot gnu dot org

On Tue, 30 Aug 2011, Ian Lance Taylor wrote:

Jonathan Wakely <jwakely.gcc@gmail.com> writes:

You could file an enhancement request in Bugzilla requesting that the
warning is disabled for the variable in the for-range-declaration.


Personally I think this is the way to go.  The variable is implicitly
used, and the warning should reflect that.

If C++ had allowed for(int:range) in addition to for(int i:range), like you can abstain from naming function arguments, the warning would have made more sense. As it is, I agree the warning should go, although I don't know why you say the variable is implicitly used.

--
Marc Glisse

Follow-Ups:
- Re: Strange warning in C++11 range based for loop
  - From: Ian Lance Taylor

References:
- Strange warning in C++11 range based for loop
  - From: Pavel Dzhioev
- Re: Strange warning in C++11 range based for loop
  - From: Jonathan Wakely
- Re: Strange warning in C++11 range based for loop
  - From: Ian Lance Taylor

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