Re: [Boost-bugs] [Boost C++ Libraries] #6160: support for (istream >> array < char >)

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6160: support for (istream >> array < char >)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-11-28 17:01:16

#6160: support for (istream >> array < char >)
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  Reporter:  giecrilj@…             |       Owner:  marshall
      Type:  Feature Requests       |      Status:  assigned
 Milestone:  To Be Determined       |   Component:  array   
   Version:  Boost 1.44.0           |    Severity:  Cosmetic
Resolution:                         |    Keywords:          
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Comment (by marshall):

 Replying to [comment:7 ne01026@…]:
 > Replying to [comment:6 marshall]:
 > > Replying to [comment:4 ne01026@…]:
 > > > `char []` has unknown length, `array < char >` has known length,
 therefore `>> array` is safer than `>> char []`, and my code, attached,
 q.v., uses this information to prevent buffer overflow.
 > >
 > > `char []` has known length - sizeof is your friend here.
 >
 > `sizeof (char [])` is undefined.

 Sorry - I was imprecise: char [N] has size N for all N > 0

 > > Do you know if this was considered for std::array?
 >
 > I do not know; however, given that std takes from boost and not the
 other way round, I decided to put it here first.  At least, the thing
 seems obvious and straighforward to me.  The standard library has special
 semantics for (native) character arrays, and so should we.
 >
 > I tried to discuss the matter at #boost and I was told to file an
 enhancement, so here it is.

 And I'm glad that you did - and now we are discussing it.

 BTW - if this were to become part of boost, it would be more complicated.
 You should be able to extract from std::wcin to a boost::array<wchar_t>,
 for example.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6160#comment:8>
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