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31 lines
716 B
Rust
31 lines
716 B
Rust
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// See https://github.com/rust-lang/rust/issues/88470
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//@ run-rustfix
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//@ edition:2018
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//@ check-pass
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#![warn(rust_2021_prelude_collisions)]
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#![allow(dead_code)]
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#![allow(unused_imports)]
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pub trait PyTryFrom<'v, T>: Sized {
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fn try_from<V>(value: V) -> Result<&'v Self, T>;
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}
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pub trait PyTryInto<T>: Sized {
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fn try_into(&self) -> Result<&T, i32>;
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}
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struct Foo;
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impl<U> PyTryInto<U> for Foo
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where
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U: for<'v> PyTryFrom<'v, i32>,
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{
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fn try_into(&self) -> Result<&U, i32> {
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<U as PyTryFrom<'_, _>>::try_from(self)
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//~^ WARNING trait-associated function `try_from` will become ambiguous in Rust 2021
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//~| this is accepted in the current edition (Rust 2018)
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}
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}
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fn main() {}
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