Re: [Boost-users] [program_options] unsigned variables silently cast

Torrey Pines wrote:

Hi

With the current implementation, unsigned variables accept negative values, that get silently cast.

E.g. on my platform, if "--length" expects size_t, --length -32 assigns it a value 4294967264 without warnings or errors. This behavior surprised me, and I'm using a workaround (parsing an int, and checking its range manually).

However, is this an intended feature of the library?

Not that I indended it. The library uses lexical_cast to covert from "-32" to size_t, and I'm suprised you get what you get. I shall investigage, but would you please file a bug report about this so that I don't forget? Thanks, Volodya