1 files changed, 2 insertions, 0 deletions
diff --git a/src/wasm.h b/src/wasm.h
index ba797d773..96c9271fe 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -1540,6 +1540,7 @@ public:
 
 class RefTest : public SpecificExpression<Expression::RefTestId> {
 public:
+  RefTest() = default;
   RefTest(MixedArena& allocator) {}
 
   Expression* ref;
@@ -1553,6 +1554,7 @@ public:
 
 class RefCast : public SpecificExpression<Expression::RefCastId> {
 public:
+  RefCast() = default;
   RefCast(MixedArena& allocator) {}
 
   Expression* ref;