30 lines
501 B
Rust
30 lines
501 B
Rust
// https://github.com/rust-lang/rust/issues/55380
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//@ run-pass
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#![feature(specialization)]
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//~^ WARN the feature `specialization` is incomplete
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pub trait Foo {
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fn abc() -> u32;
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fn def() -> u32;
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}
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pub trait Marker {}
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impl Marker for () {}
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impl<T> Foo for T {
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default fn abc() -> u32 { 16 }
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default fn def() -> u32 { 42 }
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}
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impl<T: Marker> Foo for T {
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fn def() -> u32 {
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Self::abc()
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}
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}
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fn main() {
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assert_eq!(<()>::def(), 16);
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assert_eq!(<i32>::def(), 42);
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}
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