diff --git a/mlir/lib/IR/MLIRContext.cpp b/mlir/lib/IR/MLIRContext.cpp
--- a/mlir/lib/IR/MLIRContext.cpp
+++ b/mlir/lib/IR/MLIRContext.cpp
@@ -331,6 +331,12 @@
 
 public:
   MLIRContextImpl() : identifiers(identifierAllocator) {}
+  ~MLIRContextImpl() {
+    for (auto typeMapping : registeredTypes)
+      typeMapping.second->~AbstractType();
+    for (auto attrMapping : registeredAttributes)
+      attrMapping.second->~AbstractAttribute();
+  }
 };
 } // end namespace mlir