Re: [Boost-bugs] [Boost C++ Libraries] #7630: Range adaptors do not play nicely with range-based for loops

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7630: Range adaptors do not play nicely with range-based for loops
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-01-30 16:58:14

#7630: Range adaptors do not play nicely with range-based for loops
-------------------------------+------------------------
  Reporter:  gromer@…          |      Owner:  neilgroves
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  range
   Version:  Boost 1.51.0      |   Severity:  Problem
Resolution:                    |   Keywords:  range
-------------------------------+------------------------

Comment (by Igor Lubashev <ilubashe@…>):

 See #9578 for a related issue, related to BOOST_FOREACH and adaptors.

 I view comment:2 regarding the documented types as a very minor issue.
 Since the application of adaptors to r-values has previously resulted in
 undefined behavior, changing the data type returned for the application of
 adaptors to r-values should not break almost any properly working code
 that is relying on this documentation.

 The only kind of working code that could rely on this would be something
 like `foo(map<int,int>() | map_keys)`.  In such cases, I would expect that
 `foo` is actually declared as a template that automatically captures the
 range type, so no harm done.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7630#comment:10>
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