X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_trait_selection%2Fsrc%2Ftraits%2Foutlives_bounds.rs;h=e1092a788e32b5df96786eb40146d485a096a43f;hb=2cd2070af7643ad88d280a4933bc4fb60451e521;hp=108dae092cfe7f922fb1eeda952d5bded82d32f3;hpb=18431b66ce68a58d3dde2c7143a6e6bfb08cae60;p=rust.git

diff --git a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
index 108dae092cf..e1092a788e3 100644
--- a/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
+++ b/compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
@@ -1,8 +1,8 @@
 use crate::infer::InferCtxt;
 use crate::traits::query::type_op::{self, TypeOp, TypeOpOutput};
 use crate::traits::query::NoSolution;
-use crate::traits::{ObligationCause, TraitEngine, TraitEngineExt};
-use rustc_data_structures::fx::FxHashSet;
+use crate::traits::ObligationCause;
+use rustc_data_structures::fx::FxIndexSet;
 use rustc_hir as hir;
 use rustc_hir::HirId;
 use rustc_middle::ty::{self, ParamEnv, Ty};
@@ -22,7 +22,7 @@ fn implied_bounds_tys(
         &'a self,
         param_env: ty::ParamEnv<'tcx>,
         body_id: hir::HirId,
-        tys: FxHashSet<Ty<'tcx>>,
+        tys: FxIndexSet<Ty<'tcx>>,
     ) -> Bounds<'a, 'tcx>;
 }
 
@@ -74,20 +74,20 @@ fn implied_outlives_bounds(
             debug!(?constraints);
             // Instantiation may have produced new inference variables and constraints on those
             // variables. Process these constraints.
-            let mut fulfill_cx = <dyn TraitEngine<'tcx>>::new(self.tcx);
             let cause = ObligationCause::misc(span, body_id);
-            for &constraint in &constraints.outlives {
-                let obligation = self.query_outlives_constraint_to_obligation(
-                    constraint,
-                    cause.clone(),
-                    param_env,
-                );
-                fulfill_cx.register_predicate_obligation(self, obligation);
-            }
+            let errors = super::fully_solve_obligations(
+                self,
+                constraints.outlives.iter().map(|constraint| {
+                    self.query_outlives_constraint_to_obligation(
+                        *constraint,
+                        cause.clone(),
+                        param_env,
+                    )
+                }),
+            );
             if !constraints.member_constraints.is_empty() {
                 span_bug!(span, "{:#?}", constraints.member_constraints);
             }
-            let errors = fulfill_cx.select_all_or_error(self);
             if !errors.is_empty() {
                 self.tcx.sess.delay_span_bug(
                     span,
@@ -103,7 +103,7 @@ fn implied_bounds_tys(
         &'a self,
         param_env: ParamEnv<'tcx>,
         body_id: HirId,
-        tys: FxHashSet<Ty<'tcx>>,
+        tys: FxIndexSet<Ty<'tcx>>,
     ) -> Bounds<'a, 'tcx> {
         tys.into_iter()
             .map(move |ty| {