From ced60a7ff7c6bed7ad1972577deac3403e2c939f Mon Sep 17 00:00:00 2001
From: Fernandez Ludovic <ldez@users.noreply.github.com>
Date: Sat, 20 Apr 2024 01:06:26 +0200
Subject: [PATCH] fix: index out of range

---
 promlinter.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/promlinter.go b/promlinter.go
index 2ed4d60..2418d78 100644
--- a/promlinter.go
+++ b/promlinter.go
@@ -347,6 +347,10 @@ func (v *visitor) parseSendMetricChanExpr(chExpr *ast.SendStmt) ast.Visitor {
 		return v
 	}
 
+	if len(call.Args) == 0 {
+		return v
+	}
+
 	name, help := v.parseConstMetricOptsExpr(call.Args[0])
 	if name == nil {
 		return v