id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
3610,boost::format copy constructor can create format object in unexpected state.,David Ward <davidjward30@…>,Samuel Krempp,"If I copy construct a new boost::format object, I expect it to be in a (re)useable state. However, the following code throws a boost::io::too_many_args exception

{
	boost::format f(""%d"");

	std::cout << f % 10 << std::endl;
	std::cout << f % 10 << std::endl;  // format object can be reused

	boost::format f2(f);
	std::cout << f2 % 10 << std::endl; // exception raised - new format is not in a valid state for formatting
}


On inspection of the code, the copy constructor always sets the dumped_ member to false, yet it copies the cur_arg_ from the rhs object. It's hard to see how this behaviour might be desirable.
",Bugs,closed,Boost 1.41.0,format,Boost 1.37.0,Problem,fixed,,