1 files changed, 6 insertions, 2 deletions
diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs
index 718dbaaafcc..461952ac4b4 100644
--- a/compiler/rustc_interface/src/passes.rs
+++ b/compiler/rustc_interface/src/passes.rs
@@ -775,12 +775,16 @@ fn analysis(tcx: TyCtxt<'_>, (): ()) -> Result<()> {
     rustc_hir_analysis::check_crate(tcx)?;
 
     sess.time("MIR_borrow_checking", || {
-        tcx.hir().par_body_owners(|def_id| tcx.ensure().mir_borrowck(def_id));
+        tcx.hir().par_body_owners(|def_id| {
+            // Run THIR unsafety check because it's responsible for stealing
+            // and deallocating THIR when enabled.
+            tcx.ensure().thir_check_unsafety(def_id);
+            tcx.ensure().mir_borrowck(def_id)
+        });
     });
 
     sess.time("MIR_effect_checking", || {
         for def_id in tcx.hir().body_owners() {
-            tcx.ensure().thir_check_unsafety(def_id);
             if !tcx.sess.opts.unstable_opts.thir_unsafeck {
                 rustc_mir_transform::check_unsafety::check_unsafety(tcx, def_id);
             }