id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
9544,gcc 4.9.0 -std=c++1y breakage,Peter A. Bigot <pab@…>,John Maddock,"The program below fails to compile with development gcc in C++1y mode; it works in C++11 mode.  I don't know whether this is a fault in gcc or in boost, but thought an early warning was worth providing.  This is with the current super-project master branch; I believe it also fails on develop.

{{{
llc[900]$ cat /tmp/bre.cc 
#include <boost/regex.hpp>

const boost::regex e(""AB"");

llc[901]$ g++ --version
g++ (GCC) 4.9.0 20140104 (experimental)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

llc[902]$ g++ -std=c++11 -I/opt/boost -c /tmp/bre.cc 
llc[903]$ g++ -std=c++1y -I/opt/boost -c /tmp/bre.cc 
In file included from /opt/boost/boost/regex/v4/regex.hpp:70:0,
                 from /opt/boost/boost/regex.hpp:31,
                 from /tmp/bre.cc:1:
/opt/boost/boost/regex/v4/basic_regex_creator.hpp: In member function ‘boost::re_detail::re_literal* boost::re_detail::basic_regex_creator<charT, traits>::append_literal(charT)’:
/opt/boost/boost/regex/v4/basic_regex_creator.hpp:347:24: error: lvalue required as increment operand
       ++(result->length);
                        ^
In file included from /opt/boost/boost/regex/v4/regex.hpp:73:0,
                 from /opt/boost/boost/regex.hpp:31,
                 from /tmp/bre.cc:1:
/opt/boost/boost/regex/v4/basic_regex_parser.hpp: In member function ‘bool boost::re_detail::basic_regex_parser<charT, traits>::parse_repeat(std::size_t, std::size_t)’:
/opt/boost/boost/regex/v4/basic_regex_parser.hpp:974:21: error: lvalue required as decrement operand
       --(lit->length);
}}}",Bugs,closed,To Be Determined,regex,Boost 1.55.0,Problem,worksforme,,