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Rollup merge of #106970 - kylematsuda:earlybinder-item-bounds, r=lcnr

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Switch to `EarlyBinder` for `item_bounds` query

Part of the work to finish #105779 (also see https://github.com/rust-lang/types-team/issues/78).

Several queries `X` have a `bound_X` variant that wraps the output in `EarlyBinder`. This adds `EarlyBinder` to the return type of the `item_bounds` query and removes `bound_item_bounds`.

r? `@lcnr`
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Matthias Krüger 2023-01-17 20:21:28 +01:00 • committed by GitHub
commit 3d7677d91a
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9 changed files with 16 additions and 20 deletions
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compiler/rustc_trait_selection/src/traits/project.rs
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@ -1375,7 +1375,7 @@ fn assemble_candidates_from_trait_def<'cx, 'tcx>(
// Check whether the self-type is itself a projection.
// If so, extract what we know from the trait and try to come up with a good answer.
let bounds = match *obligation.predicate.self_ty().kind() {
ty::Alias(_, ref data) => tcx.bound_item_bounds(data.def_id).subst(tcx, data.substs),
ty::Alias(_, ref data) => tcx.item_bounds(data.def_id).subst(tcx, data.substs),
ty::Infer(ty::TyVar(_)) => {
// If the self-type is an inference variable, then it MAY wind up
// being a projected type, so induce an ambiguity.