[ox/mc] Prevent reading array length of absent array

(synced from d7b5f51fdc)
2020-03-30 23:59:01 -05:00
parent a4073e0676
commit afd829a7d7
2 changed files with 13 additions and 10 deletions
@@ -199,10 +199,13 @@ Error MetalClawReader::field(const char*, Handler handler) {

 template<typename T>
 Error MetalClawReader::field(const char* name, ox::Vector<T> *val) {
-	const auto [len, err] = arrayLength(false);
-	oxReturnError(err);
-	val->resize(len);
-	return field(name, val->data(), val->size());
+	if (m_fieldPresence.get(m_field)) {
+		const auto [len, err] = arrayLength(false);
+		oxReturnError(err);
+		val->resize(len);
+		return field(name, val->data(), val->size());
+	}
+	return OxError(0);
 }

 template<typename T>