From 81daa7f89527e4bf8cf7ee4fdcec3f642ae508da Mon Sep 17 00:00:00 2001
From: Li Jin <dragon-fly@qq.com>
Date: Thu, 25 Dec 2025 08:51:41 +0800
Subject: Fixed a format crash issue.

---
 src/yuescript/yue_ast.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/yuescript/yue_ast.cpp b/src/yuescript/yue_ast.cpp
index 55b5d03..d85e32e 100644
--- a/src/yuescript/yue_ast.cpp
+++ b/src/yuescript/yue_ast.cpp
@@ -83,7 +83,11 @@ std::string VarArg_t::to_string(void*) const {
 	return "..."s;
 }
 std::string VarArgDef_t::to_string(void* ud) const {
-	return "..."s + name->to_string(ud);
+	if (name) {
+		return "..."s + name->to_string(ud);
+	} else {
+		return "..."s;
+	}
 }
 std::string Seperator_t::to_string(void*) const {
 	return {};
-- 
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