Re: [Boost-bugs] [Boost C++ Libraries] #4146: [patch] ./boost/property_tree/detail/xml_parser_read_rapidxml.hpp:117: error: non-constant `(((int)f_c) | 3072)' cannot be used as template argument

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4146: [patch] ./boost/property_tree/detail/xml_parser_read_rapidxml.hpp:117: error: non-constant `(((int)f_c) | 3072)' cannot be used as template argument
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-03-20 18:14:11

#4146: [patch] ./boost/property_tree/detail/xml_parser_read_rapidxml.hpp:117:
error: non-constant `(((int)f_c) | 3072)' cannot be used as template
argument
---------------------------------------------------+------------------------
  Reporter:  Jan-Hein Bührman <buhrman@…>          |       Owner:  cornedbee                                              
      Type:  Bugs                                  |      Status:  closed                                                 
 Milestone:                                        |   Component:  property_tree                                          
   Version:  Boost Development Trunk               |    Severity:  Showstopper                                            
Resolution:  fixed                                 |    Keywords:  property_tree xml_parser non-constant template argument
---------------------------------------------------+------------------------

Comment (by Leonid Gershanovich <gleonid@…>):

 please consider previous attachments.
 essentially I propose to use enums instead of const int:

 {{{

 --           const int f_tws = parse_normalize_whitespace
 --                            | parse_trim_whitespace;
 +            enum {    f_tws = parse_normalize_whitespace
 +                            | parse_trim_whitespace };

 }}}

 This should work with any compiler as '''enum''' is a compile time
 constant, while '''const int''' is a run time constant.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4146#comment:4>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.