27 lines
600 B
Rust
27 lines
600 B
Rust
// Regression test for #39618, shouldn't crash.
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// FIXME(JohnTitor): Centril pointed out this looks suspicions, we should revisit here.
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// More context: https://github.com/rust-lang/rust/pull/69192#discussion_r379846796
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#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
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trait Foo {
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fn foo(&self);
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}
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trait Bar {
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fn bar(&self);
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}
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impl<T> Bar for T where T: Foo {
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fn bar(&self) {}
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}
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impl<T> Foo for T where T: Bar {
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//~^ ERROR cycle detected when computing whether impls specialize one another
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fn foo(&self) {}
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}
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impl Foo for u64 {}
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fn main() {}
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