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20 lines
583 B
Rust
20 lines
583 B
Rust
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//@ compile-flags: -Znext-solver
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#![feature(lazy_type_alias)]
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//~^ WARN the feature `lazy_type_alias` is incomplete
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trait Foo {}
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type A<T: Foo> = T;
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struct W<T>(T);
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// For `W<A<usize>>` to be WF, `A<usize>: Sized` must hold. However, when assembling
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// alias bounds for `A<usize>`, we try to normalize it, but it doesn't hold because
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// `usize: Foo` doesn't hold. Therefore we ICE, because we don't expect to still
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// encounter weak types in `assemble_alias_bound_candidates_recur`.
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fn hello(_: W<A<usize>>) {}
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//~^ ERROR the type `W<A<usize>>` is not well-formed
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fn main() {}
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