tests/ui/rust-2021/future-prelude-collision-generic-trait.rs

   1 // See https://github.com/rust-lang/rust/issues/88470
   2 // run-rustfix
   3 // edition:2018
   4 // check-pass
   5 #![warn(rust_2021_prelude_collisions)]
   6 #![allow(dead_code)]
   7 #![allow(unused_imports)]
   8
   9 pub trait PyTryFrom<'v, T>: Sized {
  10     fn try_from<V>(value: V) -> Result<&'v Self, T>;
  11 }
  12
  13 pub trait PyTryInto<T>: Sized {
  14     fn try_into(&self) -> Result<&T, i32>;
  15 }
  16
  17 struct Foo;
  18
  19 impl<U> PyTryInto<U> for Foo
  20 where
  21     U: for<'v> PyTryFrom<'v, i32>,
  22 {
  23     fn try_into(&self) -> Result<&U, i32> {
  24         U::try_from(self)
  25         //~^ WARNING trait-associated function `try_from` will become ambiguous in Rust 2021
  26         //~| this is accepted in the current edition (Rust 2018)
  27     }
  28 }
  29
  30 fn main() {}