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17 lines
306 B
Rust
17 lines
306 B
Rust
#![feature(type_alias_impl_trait)]
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type A = impl Foo; //~ ERROR unconstrained opaque type
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type B = impl Foo;
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trait Foo {}
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fn muh(x: A) -> B {
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x // B's hidden type is A (opaquely)
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//~^ ERROR opaque type's hidden type cannot be another opaque type
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}
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struct Bar;
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impl Foo for Bar {}
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fn main() {}
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