26 lines
575 B
Rust
26 lines
575 B
Rust
// run-pass
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#![allow(unused_mut)]
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// Test that when instantiating trait default methods, typeck handles
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// lifetime parameters defined on the method bound correctly.
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pub trait Foo {
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fn bar<'a, I: Iterator<Item=&'a ()>>(&self, it: I) -> usize {
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let mut xs = it.filter(|_| true);
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xs.count()
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}
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}
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pub struct Baz;
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impl Foo for Baz {
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// When instantiating `Foo::bar` for `Baz` here, typeck used to
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// ICE due to the lifetime parameter of `bar`.
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}
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fn main() {
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let x = Baz;
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let y = vec![(), (), ()];
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assert_eq!(x.bar(y.iter()), 3);
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}
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