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Remove unused SelectionCandidate::PointerLikeCandidate #153798

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Merged
rust-bors merged 1 commit into from
Mar 13, 2026
+0 −28
Merged

Remove unused SelectionCandidate::PointerLikeCandidate #153798

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3 changes: 0 additions & 3 deletions compiler/rustc_middle/src/traits/select.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -163,9 +163,6 @@ pub enum SelectionCandidate<'tcx> {
/// types generated for a fn pointer type (e.g., `fn(int) -> int`)
FnPointerCandidate,

/// Builtin impl of the `PointerLike` trait.
PointerLikeCandidate,

TraitAliasCandidate,

/// Matching `dyn Trait` with a supertrait of `Trait`. The index is the
Expand Down
24 changes: 0 additions & 24 deletions compiler/rustc_trait_selection/src/traits/select/confirmation.rs
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Expand Up @@ -115,11 +115,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
ImplSource::Builtin(BuiltinImplSource::Misc, data)
}

PointerLikeCandidate => {
let data = self.confirm_pointer_like_candidate(obligation);
ImplSource::Builtin(BuiltinImplSource::Misc, data)
}

TraitAliasCandidate => {
let data = self.confirm_trait_alias_candidate(obligation);
ImplSource::Builtin(BuiltinImplSource::Misc, data)
Expand Down Expand Up @@ -638,25 +633,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
Ok(nested)
}

fn confirm_pointer_like_candidate(
&mut self,
obligation: &PolyTraitObligation<'tcx>,
) -> PredicateObligations<'tcx> {
debug!(?obligation, "confirm_pointer_like_candidate");
let placeholder_predicate = self.infcx.enter_forall_and_leak_universe(obligation.predicate);
let self_ty = self.infcx.shallow_resolve(placeholder_predicate.self_ty());
let ty::Pat(base, _) = *self_ty.kind() else { bug!() };
let cause = obligation.derived_cause(ObligationCauseCode::BuiltinDerived);

self.collect_predicates_for_types(
obligation.param_env,
cause,
obligation.recursion_depth + 1,
placeholder_predicate.def_id(),
vec![base],
)
}

fn confirm_trait_alias_candidate(
&mut self,
obligation: &PolyTraitObligation<'tcx>,
Expand Down
1 change: 0 additions & 1 deletion compiler/rustc_trait_selection/src/traits/select/mod.rs
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Expand Up @@ -2038,7 +2038,6 @@ impl<'tcx> SelectionContext<'_, 'tcx> {
| TraitUpcastingUnsizeCandidate(_)
| BuiltinObjectCandidate
| BuiltinUnsizeCandidate
| PointerLikeCandidate
| BikeshedGuaranteedNoDropCandidate => false,
// Non-global param candidates have already been handled, global
// where-bounds get ignored.
Expand Down
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