Re: [Boost-users] program_options requires non-const argv

Merrill Cornish wrote:

Steve,

I ran into the same problem. Once I thought about it, I realized I had _never_ seen a C or C++ main() function prototype defined with a const second argument.

I think I remember that one of the traditional C getopt() function variants actually munges the argument list by removing that arguments it recognizes, leaving anything else for direct processing by the program.

I'm guessing program_options is therefore tacitly assuming the second argument is non-const also.

Simply, the standard says second argument of main is non-const. Using const version is strictly speaking, invalid, and in practice I recall there were some problems making both consts and non-const to work. - Volodya