1 files changed, 1 insertions, 0 deletions
diff --git a/src/wasm.h b/src/wasm.h
index 451039d45..366aa7302 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -1522,6 +1522,7 @@ public:
 // 'throw_ref' from the new EH proposal
 class ThrowRef : public SpecificExpression<Expression::ThrowRefId> {
 public:
+  ThrowRef() = default;
   ThrowRef(MixedArena& allocator) {}
 
   Expression* exnref;