1 files changed, 1 insertions, 3 deletions
diff --git a/src/wasm-binary.h b/src/wasm-binary.h
index 747f9a2ce..954521365 100644
--- a/src/wasm-binary.h
+++ b/src/wasm-binary.h
@@ -456,9 +456,7 @@ class WasmBinaryWriter : public Visitor<WasmBinaryWriter, void> {
   }
 
 public:
-  WasmBinaryWriter(Module* input, BufferWithRandomAccess& o, bool debug) : o(o), debug(debug) {
-    wasm = allocator.alloc<Module>();
-    *wasm = *input; // simple shallow copy; we won't be modifying any internals, just adding some function types, so this is fine
+  WasmBinaryWriter(Module* input, BufferWithRandomAccess& o, bool debug) : wasm(input), o(o), debug(debug) {
     prepare();
   }