mirror of https://github.com/rust-lang/rust
19 lines
408 B
Rust
19 lines
408 B
Rust
//@ check-pass
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//@ run-rustfix
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//@ edition 2018
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#![warn(rust_2021_prelude_collisions)]
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trait MyTrait<A> {
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fn from_iter(x: Option<A>);
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}
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impl<T> MyTrait<()> for Vec<T> {
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fn from_iter(_: Option<()>) {}
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}
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fn main() {
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<Vec<i32>>::from_iter(None);
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//~^ WARNING trait-associated function `from_iter` will become ambiguous in Rust 2021
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//~^^ WARNING this is accepted in the current edition
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}
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