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Delegation: fix ICE on wrong instantiation

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This commit is contained in:
Bryanskiy 2024-03-26 18:59:03 +03:00
parent 10a7aa14fe
commit 0cd9708de6
21 changed files with 238 additions and 179 deletions
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11
compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs
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@ -2212,6 +2212,17 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
try_emit("delegation with early bound generics");
}
// There is no way to instantiate `Self` param for caller if
// 1. callee is a trait method
// 2. delegation item isn't an associative item
if let DefKind::AssocFn = self.tcx().def_kind(sig_id)
&& let DefKind::Fn = self.tcx().def_kind(self.item_def_id())
&& self.tcx().associated_item(sig_id).container
== ty::AssocItemContainer::TraitContainer
{
try_emit("delegation to a trait method from a free function");
}
if self.tcx().asyncness(sig_id) == ty::Asyncness::Yes {
try_emit("delegation to async functions");
}