From 0838a2b3dfc4e3d71417a73b3619cc5e16f82824 Mon Sep 17 00:00:00 2001
From: zymeli <710055@qq.com>
Date: Mon, 4 Dec 2023 22:53:47 +0800
Subject: [PATCH] Fix #528: Fix `yii\debug\Panel::getTraceLine()` to handle
 backtrace for internal PHP functions

---
 CHANGELOG.md                | 2 +-
 src/Panel.php               | 8 ++++++++
 src/views/default/index.php | 2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index be3b8c253..fce95457a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ Yii Framework 2 debug extension Change Log
 2.1.26 under development
 ------------------------
 
-- no changes in this release.
+- Bug #528: Fix `yii\debug\Panel::getTraceLine()` to handle backtrace for internal PHP functions (zymeli)
 
 
 2.1.25 September 26, 2023
diff --git a/src/Panel.php b/src/Panel.php
index a38abcb4e..d2857781c 100644
--- a/src/Panel.php
+++ b/src/Panel.php
@@ -131,6 +131,14 @@ public function getUrl($additionalParams = null)
      */
     public function getTraceLine($options)
     {
+        /**
+         * If an internal PHP function, such as `call_user_func`, in the backtrace, the 'file' and 'line' not be available.
+         * @see https://www.php.net/manual/en/function.debug-backtrace.php#59713
+         */
+        if (!isset($options['file'])) {
+            return VarDumper::dumpAsString($options);
+        }
+
         if (!isset($options['text'])) {
             $options['text'] = "{$options['file']}:{$options['line']}";
         }
diff --git a/src/views/default/index.php b/src/views/default/index.php
index e092b0dfb..7f5a70a8f 100644
--- a/src/views/default/index.php
+++ b/src/views/default/index.php
@@ -17,7 +17,7 @@
     <div id="yii-debug-toolbar" class="yii-debug-toolbar yii-debug-toolbar_position_top" style="display: none;">
         <div class="yii-debug-toolbar__bar">
             <div class="yii-debug-toolbar__block yii-debug-toolbar__title">
-                <a href="#">
+                <a href="<?= Url::to(['index']) ?>">
                     <img width="30" height="30" alt="" src="<?= \yii\debug\Module::getYiiLogo() ?>">
                 </a>
             </div>