irange doesn't end iteration properly when step_size is 2 or more

[hotwatermorning]

The code

std::cout << boost::irange(0, 9, 2) << std::endl;

prints "0246" instead of "02468".

[hotwatermorning]

patch for irange.hpp

[Neil Groves]

Thanks for the defect report. Additional tests have been created, and a fix put into the code for boost trunk. The supplied patch would introduce a number of regressions, hence a different solution was employed.

[Akira Takahashi(faithandbrave@…]

This is broken change. It is necessary to write in a history document clearly.