error[E0080]: evaluation of ` as Unsigned>::MAX` failed --> $DIR/issue-50814.rs:15:21 | LL | const MAX: u8 = A::MAX + B::MAX; | ^^^^^^^^^^^^^^^ attempt to compute `u8::MAX + u8::MAX`, which would overflow note: erroneous constant used --> $DIR/issue-50814.rs:20:6 | LL | &Sum::::MAX | ^^^^^^^^^^^^^^^^^^ note: the above error was encountered while instantiating `fn foo::` --> $DIR/issue-50814.rs:25:5 | LL | foo(0); | ^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0080`.