3 files changed, 12 insertions, 12 deletions
diff --git a/src/librustc/hir/map/mod.rs b/src/librustc/hir/map/mod.rs
index 1e348e3a31c..b88185c3154 100644
--- a/src/librustc/hir/map/mod.rs
+++ b/src/librustc/hir/map/mod.rs
@@ -32,7 +32,7 @@ use hir::print::Nested;
 use hir::svh::Svh;
 use util::nodemap::{DefIdMap, FxHashMap};
 
-use arena::TypedArena;
+use arena::SyncTypedArena;
 use std::io;
 use ty::TyCtxt;
 
@@ -219,7 +219,7 @@ impl<'hir> MapEntry<'hir> {
 pub struct Forest {
     krate: Crate,
     pub dep_graph: DepGraph,
-    inlined_bodies: TypedArena<Body>
+    inlined_bodies: SyncTypedArena<Body>
 }
 
 impl Forest {
@@ -227,7 +227,7 @@ impl Forest {
         Forest {
             krate,
             dep_graph: dep_graph.clone(),
-            inlined_bodies: TypedArena::new()
+            inlined_bodies: SyncTypedArena::new()
         }
     }
 
diff --git a/src/librustc/infer/mod.rs b/src/librustc/infer/mod.rs
index 84bf9cc84e7..40cc43c3ca6 100644
--- a/src/librustc/infer/mod.rs
+++ b/src/librustc/infer/mod.rs
@@ -37,7 +37,7 @@ use errors::DiagnosticBuilder;
 use syntax_pos::{self, Span};
 use syntax_pos::symbol::InternedString;
 use util::nodemap::FxHashMap;
-use arena::DroplessArena;
+use arena::SyncDroplessArena;
 
 use self::combine::CombineFields;
 use self::higher_ranked::HrMatchResult;
@@ -407,7 +407,7 @@ impl fmt::Display for FixupError {
 /// F: for<'b, 'tcx> where 'gcx: 'tcx FnOnce(InferCtxt<'b, 'gcx, 'tcx>).
 pub struct InferCtxtBuilder<'a, 'gcx: 'a+'tcx, 'tcx: 'a> {
     global_tcx: TyCtxt<'a, 'gcx, 'gcx>,
-    arena: DroplessArena,
+    arena: SyncDroplessArena,
     fresh_tables: Option<RefCell<ty::TypeckTables<'tcx>>>,
 }
 
@@ -415,7 +415,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'gcx> {
     pub fn infer_ctxt(self) -> InferCtxtBuilder<'a, 'gcx, 'tcx> {
         InferCtxtBuilder {
             global_tcx: self,
-            arena: DroplessArena::new(),
+            arena: SyncDroplessArena::new(),
             fresh_tables: None,
 
         }
diff --git a/src/librustc/ty/context.rs b/src/librustc/ty/context.rs
index 9da83199ec9..fea01725769 100644
--- a/src/librustc/ty/context.rs
+++ b/src/librustc/ty/context.rs
@@ -57,7 +57,7 @@ use rustc_data_structures::accumulate_vec::AccumulateVec;
 use rustc_data_structures::stable_hasher::{HashStable, hash_stable_hashmap,
                                            StableHasher, StableHasherResult,
                                            StableVec};
-use arena::{TypedArena, DroplessArena};
+use arena::{TypedArena, SyncDroplessArena};
 use rustc_data_structures::indexed_vec::IndexVec;
 use rustc_data_structures::sync::{Lrc, Lock};
 use std::any::Any;
@@ -82,14 +82,14 @@ use hir;
 
 pub struct AllArenas<'tcx> {
     pub global: GlobalArenas<'tcx>,
-    pub interner: DroplessArena,
+    pub interner: SyncDroplessArena,
 }
 
 impl<'tcx> AllArenas<'tcx> {
     pub fn new() -> Self {
         AllArenas {
             global: GlobalArenas::new(),
-            interner: DroplessArena::new(),
+            interner: SyncDroplessArena::new(),
         }
     }
 }
@@ -129,7 +129,7 @@ type InternedSet<'tcx, T> = Lock<FxHashSet<Interned<'tcx, T>>>;
 
 pub struct CtxtInterners<'tcx> {
     /// The arena that types, regions, etc are allocated from
-    arena: &'tcx DroplessArena,
+    arena: &'tcx SyncDroplessArena,
 
     /// Specifically use a speedy hash algorithm for these hash sets,
     /// they're accessed quite often.
@@ -146,7 +146,7 @@ pub struct CtxtInterners<'tcx> {
 }
 
 impl<'gcx: 'tcx, 'tcx> CtxtInterners<'tcx> {
-    fn new(arena: &'tcx DroplessArena) -> CtxtInterners<'tcx> {
+    fn new(arena: &'tcx SyncDroplessArena) -> CtxtInterners<'tcx> {
         CtxtInterners {
             arena,
             type_: Default::default(),
@@ -1554,7 +1554,7 @@ impl<'gcx: 'tcx, 'tcx> GlobalCtxt<'gcx> {
     /// Call the closure with a local `TyCtxt` using the given arena.
     pub fn enter_local<F, R>(
         &self,
-        arena: &'tcx DroplessArena,
+        arena: &'tcx SyncDroplessArena,
         f: F
     ) -> R
     where