| // See https://github.com/rust-lang/rust/issues/88442 |
| //@ run-rustfix |
| //@ edition:2018 |
| //@ check-pass |
| #![allow(unused)] |
| #![warn(rust_2021_prelude_collisions)] |
| |
| trait AnnotatableTryInto { |
| fn try_into<T>(self) -> Result<T, Self::Error> |
| where Self: std::convert::TryInto<T> { |
| std::convert::TryInto::try_into(self) |
| } |
| } |
| |
| impl<T> AnnotatableTryInto for T where T: From<u8> {} |
| |
| fn main() -> Result<(), &'static str> { |
| let x: u64 = 1; |
| AnnotatableTryInto::try_into::<usize>(x).or(Err("foo"))?.checked_sub(1); |
| //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021 |
| //~| WARNING this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! |
| |
| AnnotatableTryInto::try_into::<usize>(x).or(Err("foo"))?; |
| //~^ WARNING trait method `try_into` will become ambiguous in Rust 2021 |
| //~| WARNING this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! |
| |
| Ok(()) |
| } |
