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Rollup merge of rust-lang#62240 - arielb1:resolve-wf-fields, r=pnkfelix
wfcheck: resolve the type-vars in `AdtField` types Normalization can leave some type-vars unresolved in its return type. Make sure to resolve them so we have an infcx-independent type that can be used with `needs_drop`. Fixes rust-lang#61402. Closes rust-lang#62212 - this PR fixes the root cause.
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src/test/run-pass/packed/packed-with-inference-vars-issue-61402.rs
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// If a struct is packed and its last field has drop glue, then that | ||
// field needs to be Sized (to allow it to be destroyed out-of-place). | ||
// | ||
// This is checked by the compiler during wfcheck. That check used | ||
// to have problems with associated types in the last field - test | ||
// that this doesn't ICE. | ||
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#![allow(unused_imports, dead_code)] | ||
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pub struct S; | ||
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pub trait Trait<R> { type Assoc; } | ||
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impl<X> Trait<X> for S { type Assoc = X; } | ||
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#[repr(C, packed)] | ||
struct PackedAssocSized { | ||
pos: Box<<S as Trait<usize>>::Assoc>, | ||
} | ||
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fn main() { println!("Hello, world!"); } |