program_options parse_config_file() set iostream failbit even if the parse result is ok

[anonymous]

program_options::parse_config_file() reads data from an ifstream instance. It updates the failbit value of this stream when the file reads are ok.

Test case is attached :

$ ./foo
ios failure: failbit: 1 - badbit: 0
perror() value : test.cfg: No such file or directory
$ touch test.cfg
$ ./foo
opening test.cfg: failbit: 0 - badbit: 0
let s call parse_config_file()...
ios failure: failbit: 1 - badbit: 0
perror() value : test.cfg: Success

[anonymous]

wrong attachment. Here is the good one.

[Vladimir Prus]

Why is that a problem?

[Vladimir Prus]

Because I was not advised why is this a problem, I am closing this issue. Feel free to reopen should you have more details.