1 files changed, 1 insertions, 0 deletions
diff --git a/src/wasm.h b/src/wasm.h
index dbedc05f4..47cc047bb 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -1760,6 +1760,7 @@ public:
 
 class RefAs : public SpecificExpression<Expression::RefAsId> {
 public:
+  RefAs() = default;
   RefAs(MixedArena& allocator) {}
 
   RefAsOp op;