https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121919
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- N.B. the uniform random bit generator requirements extend the concept by requiring result_type (and require that that type is not bool, which isn't required by the concept). std::uniform_int_distribution meets the requirements of a random number distribution, and those requirements are only defined in terms of types which meet the uniform random bit generator requirements. So std::uniform_int_distribution is allowed to assume a URBG provides result_type. Which means that ranges algos can't use std::uniform_int_distribution, unless they wrap a generator in an adaptor that adds result_type (and ensures that the return type of g() is not bool). That seems like a defect.
