id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
13125,parse_config_file silently ignores IO errors,Johannes Spangenberg <johannes.spangenberg@…>,Vladimir Prus,"The function `parse_config_file` silently ignores I/O errors while reading the configuration file.

A easy way to reproduce the bug is to specify a directory as configuration file. On Linux, `open` will succeed but subsequent calls to `read` will fail with `EISDIR`.

---

Minimal and complete program to reproduce the problem:

{{{#!c++
#include <cerrno>
#include <iostream>

#include <boost/program_options.hpp>

using namespace boost::program_options;


int main(int argc, char *argv[])
{
    if (argc != 2) {
        std::cerr << ""Invalid amount of arguments"" << std::endl;
        return 1;
    }

    try {
        options_description desc(""Desc"");
        variables_map vm;
        store(parse_config_file<char>(argv[1], desc), vm);
        notify(vm);
    } catch (error &e) {
        std::cerr << ""Error: "" << e.what() << std::endl;
        return 1;
    }
    std::cerr << ""Everything fine"" << std::endl;
    return 0;
}
}}}
{{{
$ ./a.out some-non-existent-file
Error: can not read options configuration file 'some-non-existent-file'
$ ./a.out .
Everything fine
}}}",Bugs,new,To Be Determined,program_options,Boost Release Branch,Problem,,,