Re: [Boost-bugs] [Boost C++ Libraries] #786: bug in iostreams/copy.hpp line 81

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #786: bug in iostreams/copy.hpp line 81
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-07-07 03:47:16

#786: bug in iostreams/copy.hpp line 81
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  Reporter:  nobody  |       Owner:  turkanis
      Type:  Bugs    |      Status:  assigned
 Milestone:          |   Component:  None    
   Version:  None    |    Severity:          
Resolution:  None    |    Keywords:          
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Comment (by qbowater_at_[hidden]):

 Replying to [comment:1 alexis_wilke]:
 > Mathieu,
 >
 > Actually, the copy operator will test if(_first < _last) <do the copy>
 and if amt is -1 that condition will be false. Yet I agree that your way
 we would avoid one call and one variable ('done' in the original loop).
 I'm not part of boost so I cannot decide whether to apply the change. But
 this is only an optimization.
 > Alexis

 In VC8 DEBUG mode,it will assert in std::copy because "first > last". It
 make difficult to debug program.I think it should be repaired necessarily.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/786#comment:4>
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