mirror of
https://github.com/rust-lang/rust
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29 lines
490 B
Rust
29 lines
490 B
Rust
// build-fail
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//~^ ERROR overflow evaluating the requirement `i32: Check`
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#![feature(specialization)]
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//~^ WARN the feature `specialization` is incomplete
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trait Iterate<'a> {
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type Ty: Valid;
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fn iterate(self);
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}
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impl<'a, T> Iterate<'a> for T
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where
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T: Check,
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{
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default type Ty = ();
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default fn iterate(self) {}
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}
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trait Check {}
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impl<'a, T> Check for T where <T as Iterate<'a>>::Ty: Valid {}
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trait Valid {}
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impl Valid for () {}
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fn main() {
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Iterate::iterate(0);
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}
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