Hi Rhys,
I would think the workaround would be the one mentioned in the ticket you reference, use the trunk version of boost.
Mike
Responding to my own question...
> program_options does not accept NaN or Inf as valid double input.
>
> 1) Does this count as a bug?
It seems yes as the root cause appears to be a (now fixed for 1.48)
bug in lexical_cast (https://svn.boost.org/trac/boost/ticket/5689). I
have filed https://svn.boost.org/trac/boost/ticket/5776 against
program_options with a milestone matching the lexical_cast bug.
> 2) Can anyone suggest a workaround (shy of using string-based parameters and
> calling strtod myself)?