23 lines
509 B
Rust
23 lines
509 B
Rust
// compile-flags: -Ztrait-solver=next
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#![feature(specialization)]
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//~^ WARN the feature `specialization` is incomplete
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// Do not treat the RHS of a projection-goal as an unconstrained `Certainty::Yes` response
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// if the impl is still further specializable.
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trait Default {
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type Id;
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}
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impl<T> Default for T {
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default type Id = T; //~ ERROR type annotations needed
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}
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fn test<T: Default<Id = U>, U>() {}
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fn main() {
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test::<u32, ()>();
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//~^ ERROR cannot satisfy `<u32 as Default>::Id == ()`
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}
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