warning: type qualifiers ignored on function return type

[Yang Zhang <yang.boostbugs@…>]

Sample source:

#include <boost/program_options.hpp>
namespace po = boost::program_options;
int main() {
  int x;
  po::options_description desc("");
  desc.add_options()("x,x", po::value<int>(&x)->default_value(2), "x");
  return 0;
}

Building with -Wignored-qualifiers on g++ 4.3.2 on Ubuntu 8.10 x86_64.

/home/yang/work/boost/boost/any.hpp: In member function âvoid boost::program_options::typed_value<T, charT>::notify(const boost::any&) const [with T = int, charT = char]â:
boost_program_options_warning.cc:8:   instantiated from here
/home/yang/work/boost/boost/any.hpp:200: warning: type qualifiers ignored on function return type

[Yang Zhang <yang.boostbugs@…>]

Whoops, I meant to mark this as a bug in svn trunk.

[Vladimir Prus]

This is problem with boost::any, not program_options, so I'm changing component. Note that IIUC, boost::any is not actively maintained, so I'm not sure if this will be fixed soon. Note also that I don't have any opinion whether this warning is a actual problem with boost::any, or a bogus warning.

[Sascha Ochsenknecht <s.ochsenknecht@…>]

Sorry,

but I think it is a problem in program_options, solution can be found in here: ​#3603

[Sascha Ochsenknecht]

(In [57800]) remove compile warnings, Fixes #2562