Whitelisting scala.Tuple1 fails to compile.

[nicolasstucki]

The error message is:

19 |case class Tuple1[@specialized(Int, Long, Double) +T1](_1: T1)
   |                                                       ^
   |                                                       value _1 is already defined as method _1: => T1

The same happens with all the 22 tuples.

[odersky]

Yes, dotty will use _1, _2, automatically for getters. So one needs to use a different name for the field. Or else special case in case class desugarings.