35 lines
605 B
Rust
35 lines
605 B
Rust
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// Test that `impl MyTrait for Foo<'_>` works.
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// run-pass
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#![allow(warnings)]
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trait MyTrait { }
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struct Foo<'a> { x: &'a u32 }
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impl MyTrait for Foo<'_> {
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}
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fn impls_my_trait<T: MyTrait>() { }
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fn impls_my_trait_val<T: MyTrait>(_: T) {
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impls_my_trait::<T>();
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}
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fn random_where_clause()
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where for<'a> Foo<'a>: MyTrait { }
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fn main() {
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let x = 22;
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let f = Foo { x: &x };
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// This type is `Foo<'x>` for a local lifetime `'x`; so the impl
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// must apply to any lifetime to apply to this.
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impls_my_trait_val(f);
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impls_my_trait::<Foo<'static>>();
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random_where_clause();
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}
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