New upstream version 1.64.0+dfsg1

[rustc.git] / compiler / rustc_trait_selection / src / traits / query / type_op / custom.rs

diff --git a/compiler/rustc_trait_selection/src/traits/query/type_op/custom.rs b/compiler/rustc_trait_selection/src/traits/query/type_op/custom.rs
index 605c9ace5ed06644c22ea0d0e5774a9aa74f0e3c..c99564936aad92298ec9d3c5f31896593fe32106 100644 (file)
--- a/compiler/rustc_trait_selection/src/traits/query/type_op/custom.rs
+++ b/compiler/rustc_trait_selection/src/traits/query/type_op/custom.rs
@@ -9,7 +9,6 @@ use rustc_infer::traits::TraitEngineExt as _;
 use rustc_span::source_map::DUMMY_SP;
 
 use std::fmt;
-use std::rc::Rc;
 
 pub struct CustomTypeOp<F, G> {
     closure: F,
@@ -95,7 +94,7 @@ pub fn scrape_region_constraints<'tcx, Op: super::TypeOp<'tcx, Output = R>, R>(
         infcx.tcx,
         region_obligations
             .iter()
-            .map(|(_, r_o)| (r_o.sup_type, r_o.sub_region))
+            .map(|r_o| (r_o.sup_type, r_o.sub_region))
             .map(|(ty, r)| (infcx.resolve_vars_if_possible(ty), r)),
         &region_constraint_data,
     );
@@ -109,7 +108,7 @@ pub fn scrape_region_constraints<'tcx, Op: super::TypeOp<'tcx, Output = R>, R>(
         Ok((
             TypeOpOutput {
                 output: value,
-                constraints: Some(Rc::new(region_constraints)),
+                constraints: Some(infcx.tcx.arena.alloc(region_constraints)),
                 error_info: None,
             },
             region_constraint_data,