reverse_iterator doesn't properly forward value_type, so in cases where the underlying range's value_type is not simply uncvref_t<reference>, views::reverse will end up destroying that information - which is especially problematic if you're reverseing a zip and then do some work that relies on the value_type not having reference semantics.
reverse_iteratordoesn't properly forwardvalue_type, so in cases where the underlying range'svalue_typeis not simplyuncvref_t<reference>,views::reversewill end up destroying that information - which is especially problematic if you'rereverseing azipand then do some work that relies on thevalue_typenot having reference semantics.