Note array.into_iter() specifically in method probing

rust-lang · Apr 21, 2021 · 2a97c69 · 2a97c69
1 parent c020367
commit 2a97c69
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/compiler/rustc_typeck/src/check/method/probe.rs b/compiler/rustc_typeck/src/check/method/probe.rs
@@ -1463,6 +1463,7 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> {
                 TraitCandidate(trait_ref) => {
                     if let Some(method_name) = self.method_name {
                         // Some trait methods are excluded for arrays before 2021.
+                        // (`array.into_iter()` wants a slice iterator for compatibility.)
                         if self_ty.is_array() && !method_name.span.rust_2021() {
                             let trait_def = self.tcx.trait_def(trait_ref.def_id);
                             if trait_def.skip_array_during_method_dispatch {