1 files changed, 15 insertions, 0 deletions
diff --git a/src/wasm/wasm-binary.cpp b/src/wasm/wasm-binary.cpp
index b3f085b36..fc14510e9 100644
--- a/src/wasm/wasm-binary.cpp
+++ b/src/wasm/wasm-binary.cpp
@@ -3046,6 +3046,12 @@ BinaryConsts::ASTNodes WasmBinaryBuilder::readExpression(Expression*& curr) {
       if (maybeVisitArrayLen(curr, opcode)) {
         break;
       }
+      if (opcode == BinaryConsts::RefIsFunc ||
+          opcode == BinaryConsts::RefIsData ||
+          opcode == BinaryConsts::RefIsI31) {
+        visitRefIs((curr = allocator.alloc<RefIs>())->cast<RefIs>(), opcode);
+        break;
+      }
       throwError("invalid code after GC prefix: " + std::to_string(opcode));
       break;
     }
@@ -5534,6 +5540,15 @@ void WasmBinaryBuilder::visitRefIs(RefIs* curr, uint8_t code) {
     case BinaryConsts::RefIsNull:
       curr->op = RefIsNull;
       break;
+    case BinaryConsts::RefIsFunc:
+      curr->op = RefIsFunc;
+      break;
+    case BinaryConsts::RefIsData:
+      curr->op = RefIsData;
+      break;
+    case BinaryConsts::RefIsI31:
+      curr->op = RefIsI31;
+      break;
     default:
       WASM_UNREACHABLE("invalid code for ref.is_*");
   }