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From "Martin Sebor (JIRA)" <j...@apache.org>
Subject [jira] Created: (STDCXX-78) std::copy() doesn't detect overlapping ranges
Date Thu, 01 Dec 2005 00:39:30 GMT
std::copy() doesn't detect overlapping ranges
---------------------------------------------

         Key: STDCXX-78
         URL: http://issues.apache.org/jira/browse/STDCXX-78
     Project: STDCXX
        Type: Improvement
  Components: 25. Algorithms  
    Versions: 4.1.2    
 Environment: all
    Reporter: Martin Sebor
    Priority: Minor


Quoting from the response to the following post:
http://mail-archives.apache.org/mod_mbox/incubator-stdcxx-dev/200511.mbox/%3c4D6A8407B7AC6F4D95B0E55C4E7C4C6202EEFD7E@exmsk.moscow.vdiweb.com%3e

-------- Original Message --------
Subject: Re: questions about the lib.alg.copy test
Date: Wed, 30 Nov 2005 17:33:10 -0700
From: Martin Sebor <sebor@roguewave.com>
To: stdcxx-dev@incubator.apache.org
References: <4D6A8407B7AC6F4D95B0E55C4E7C4C6202EEFD7E@exmsk.moscow.vdiweb.com>

Anton Pevtsov wrote:
[...]
> 
> 2. The copy algorithm can work in case when the destination range
> overlaps the source range (of course, first position of the source range
> should not be contained in the destination range). Current version
> doesn't contain special test for this case, but I prefer to have such
> test. What do you think about it?

The requirement in 25.2.1, p3 is that "result shall not be in the
range [first, last)." The algorithm doesn't detect violations of
this requirement but it probably should in debug mode. This would
be a useful enhancement in general. Let me file an enhancement for
it.

Martin


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