1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/rustc_mir_transform/src/validate.rs b/compiler/rustc_mir_transform/src/validate.rs
index b62e34ac08d..026923ad786 100644
--- a/compiler/rustc_mir_transform/src/validate.rs
+++ b/compiler/rustc_mir_transform/src/validate.rs
@@ -91,6 +91,10 @@ impl<'tcx> crate::MirPass<'tcx> for Validator {
             }
         }
     }
+
+    fn is_required(&self) -> bool {
+        true
+    }
 }
 
 struct CfgChecker<'a, 'tcx> {