1 files changed, 5 insertions, 1 deletions
diff --git a/src/wasm/wasm-binary.cpp b/src/wasm/wasm-binary.cpp
index b20269f9b..13bcc5110 100644
--- a/src/wasm/wasm-binary.cpp
+++ b/src/wasm/wasm-binary.cpp
@@ -1989,7 +1989,11 @@ void WasmBinaryBuilder::readTypes() {
     }
   }
 
-  types = builder.build();
+  auto result = builder.build();
+  if (auto* err = result.getError()) {
+    Fatal() << "Invalid type: " << err->reason << " at index " << err->index;
+  }
+  types = *result;
 }
 
 Name WasmBinaryBuilder::getFunctionName(Index index) {