mirror of https://github.com/rust-lang/rust
46 lines
623 B
Rust
46 lines
623 B
Rust
//@ run-pass
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#![allow(dead_code)]
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// Test that we are handle to correctly handle a projection type
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// that appears in a supertrait bound. Issue #20559.
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trait A
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{
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type TA;
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fn dummy(&self) { }
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}
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trait B<TB>
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{
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fn foo (&self, t : TB) -> String;
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}
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trait C<TC : A> : B<<TC as A>::TA> { }
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struct X;
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impl A for X
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{
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type TA = i32;
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}
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struct Y;
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impl C<X> for Y { }
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// Both of these impls are required for successful compilation
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impl B<i32> for Y
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{
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fn foo (&self, t : i32) -> String
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{
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format!("First {}", t)
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}
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}
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fn main ()
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{
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let y = Y;
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assert_eq!(y.foo(5), format!("First 5"));
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}
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