Re: [Boost-bugs] [Boost C++ Libraries] #4421: fix for #4400

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4421: fix for #4400
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-05-18 20:50:40

#4421: fix for #4400
--------------------------------------+---------------------------
  Reporter:  Wolf Lammen <ookami1@…>  |      Owner:  no-maintainer
      Type:  Patches                  |     Status:  new
 Milestone:  Boost 1.44.0             |  Component:  preprocessor
   Version:  Boost 1.44.0             |   Severity:  Problem
Resolution:                           |   Keywords:
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Comment (by eldiener):

 Fixed in the latest preprocessor code in the 'develop' branch.

 While I appreciate the patches I did not use them. It is an undefined
 result to call BOOST_PP_SEQ_REST_N with an 'n' which is equal to the size
 of the 'seq'. The fact that this returns nothing is an implementation
 detail, since a seq cannot be empty and BOOST_PP_SEQ_REST_N clearly states
 that it expands to a seq. I will update the documentation accordingly. I
 am not willing to change BOOST_PP_SEQ_REST_N to accomodate a situation
 which should be undefined.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4421#comment:9>
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