Example parse_config_file missing template parameter

[olafvdspek@…]

store(parse_config_file("example.cfg", desc), vm);

parse_config_file needs a template parameter in this case.

http://www.boost.org/doc/libs/1_46_1/doc/html/program_options/overview.html#id2218686

[Dominic Amann <dominic.amann@…>]

parse_config_file appears to require an open istream object (instead of the filename). I think this is a documentation error?

[Olaf van der Spek <olafvdspek@…>]

Both overloads are available.

[Dominic Amann <dominic.amann@…>]

Ah - perhaps this is a bug in 4.2? The "const char*" overload does not resolve on my system - boost1.42-all-dev on Ubuntu Lucid using g++ 4.4.3.

[Olaf van der Spek <olafvdspek@…>]

4.2? Try 1.47.

[Dominic Amann <dominic.amann@…>]

Replying to Olaf van der Spek <olafvdspek@…>:

4.2? Try 1.47.

Sorry - I meant 1.42, but 1.47 is not readily available for me (as in not packaged in backports), and since the workaraound is acceptable, and the project late (as ever), I won't get around to this I am afraid. I can confirm that it does not work with an extra (true or false) template parameter either. But I guess bugs for 1.42 are somewhat irrelevant at this stage.

[Olaf van der Spek <olafvdspek@…>]

Maybe (probably) this feature was added after 1.42.

[Dominic Amann <dominic.amann@…>]

It is declared in the header I have.

    template<class charT>
#if ! BOOST_WORKAROUND(__ICL, BOOST_TESTED_AT(700))
    BOOST_PROGRAM_OPTIONS_DECL
#endif
    basic_parsed_options<charT>
    parse_config_file(const char* filename, const options_description&,
                      bool allow_unregistered = false);

[Olaf van der Spek <olafvdspek@…>]

So what error msg do you get when you try the example?

[Dominic Amann <dominic.amann@…>]

Replying to Olaf van der Spek <olafvdspek@…>:

So what error msg do you get when you try the example?

../src/main.cpp:56: error: no matching function for call to ‘parse_config_file(const char [20], boost::program_options::options_description&)’

[anonymous]

Was that fixed or is there any workaround? Got same error with boost 1.47 and GCC 4.6.2.

[anonymous]

Replying to anonymous:

Was that fixed or is there any workaround? Got same error with boost 1.47 and GCC 4.6.2.

Write: parse_config_file<char>(......); and it works.

[Victor Tseng <palatis@…>]

shouldn't this function be declared as

    template<class charT>
#if ! BOOST_WORKAROUND(__ICL, BOOST_TESTED_AT(700))
    BOOST_PROGRAM_OPTIONS_DECL
#endif
    basic_parsed_options<charT>
    parse_config_file(const charT* filename, const options_description&,
                      bool allow_unregistered = false);

and just ignore those people who tries to pass an int* or double* or whatever* to it?