Boost::spirit::karma generator bug

[yaoyuan1216@…]

I wanna save a generator so that I can call it anytime without writing duplicate codes. Here is my code:

#include<boost/spirit/include/karma.hpp> #include<boost/spirit/include/karma_format_attr.hpp> #include<list> #include<iostream>

auto par = '{' << -(boost::spirit::karma::int_ % ',') << '}';This would lead error! int main(){

using namespace std; namespace karma = boost::spirit::karma; list<int> l{1, 2, 4}; auto par = '{' << -(boost::spirit::karma::int_ % ',') << '}';This would not! cout<<karma::format(par, l)<<endl; return 0;

}

When I define par out of a functint would leads to runtime error. Does I used it generator in a wrong way or it is a bug? GCC version 4.6.3

[Hartmut Kaiser]

Use BOOST_AUTO instead (see here: ​http://boost-spirit.com/home/articles/qi-example/zero-to-60-mph-in-2-seconds/). The article explains the rationale as well.

[anonymous]

Replying to hkaiser:

Use BOOST_AUTO instead (see here: ​http://boost-spirit.com/home/articles/qi-example/zero-to-60-mph-in-2-seconds/). The article explains the rationale as well.

Excuse me! I've changed 'auto' to 'BOOST_AUTO', but it doesn't work! I got the same error as before. In addition, I used gcc4.6.3 which supports 'auto' keyword. Would you have any idea?

Code: #include<boost/spirit/include/karma.hpp> #include<boost/spirit/include/karma_format_attr.hpp> #include<list> #include<iostream>

BOOST_AUTO(par, '{' << -(boost::spirit::karma::int_ % ',') << '}');Define par here would lead to error! int main(){

using namespace std; namespace karma = boost::spirit::karma; list<int> l{1, 2, 4}; BOOST_AUTO(par, '{' << -(boost::spirit::karma::int_ % ',') << '}');Whils this would not! cout<<karma::format(par, l)<<endl; return 0;

}