30 lines
626 B
Rust
30 lines
626 B
Rust
//@ run-pass
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#![allow(dead_code)]
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// Testing that this impl turns A into a Quux, because
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// A is already a Foo Bar Baz
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impl<T:Foo + Bar + Baz> Quux for T { }
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trait Foo { fn f(&self) -> isize; }
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trait Bar { fn g(&self) -> isize; }
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trait Baz { fn h(&self) -> isize; }
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trait Quux: Foo + Bar + Baz { }
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struct A { x: isize }
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impl Foo for A { fn f(&self) -> isize { 10 } }
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impl Bar for A { fn g(&self) -> isize { 20 } }
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impl Baz for A { fn h(&self) -> isize { 30 } }
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fn f<T:Quux>(a: &T) {
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assert_eq!(a.f(), 10);
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assert_eq!(a.g(), 20);
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assert_eq!(a.h(), 30);
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}
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pub fn main() {
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let a = &A { x: 3 };
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f(a);
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}
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