From 87b0a15f1ee60c02dbb45bbcac75e7d3312a8cd0 Mon Sep 17 00:00:00 2001
From: RW <rene@gofiber.io>
Date: Mon, 25 Oct 2021 07:25:31 +0200
Subject: [PATCH] Fix - prevent panic on GetTrimmedParam (#1593)

Close #1587
---
 path.go      | 2 +-
 path_test.go | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/path.go b/path.go
index 77f4d974..f4889115 100644
--- a/path.go
+++ b/path.go
@@ -350,7 +350,7 @@ func GetTrimmedParam(param string) string {
 	start := 0
 	end := len(param)
 
-	if param[start] != paramStarterChar { // is not a param
+	if end == 0 || param[start] != paramStarterChar { // is not a param
 		return param
 	}
 	start++
diff --git a/path_test.go b/path_test.go
index 3b492936..f4a0ca6e 100644
--- a/path_test.go
+++ b/path_test.go
@@ -420,7 +420,9 @@ func Test_Path_matchParams(t *testing.T) {
 
 func Test_Utils_GetTrimmedParam(t *testing.T) {
 	t.Parallel()
-	res := GetTrimmedParam("*")
+	res := GetTrimmedParam("")
+	utils.AssertEqual(t, "", res)
+	res = GetTrimmedParam("*")
 	utils.AssertEqual(t, "*", res)
 	res = GetTrimmedParam(":param")
 	utils.AssertEqual(t, "param", res)