made gii getManifest more robust against corrupt index file

extensions/debug/CHANGELOG.md

@@ -7,6 +7,7 @@ Yii Framework 2 debug extension Change Log
 - Bug #5402: Debugger was not loading when there were closures in asset classes (samdark)
 - Bug #5745: Gii and debug modules may cause 404 exception when the route contains dashes (qiangxue)
 - Enh #5600: Allow configuring debug panels in `yii\debug\Module::panels` as panel class name strings (qiangxue)
+- Enh: Made `DefaultController::getManifest()` more robust against corrupt files (cebe)
 
 
 2.0.0 October 12, 2014

extensions/debug/controllers/DefaultController.php

@@ -118,8 +118,8 @@ class DefaultController extends Controller
                 clearstatcache();
             }
             $indexFile = $this->module->dataPath . '/index.data';
-            if (is_file($indexFile) && is_readable($indexFile)) {
-                $this->_manifest = array_reverse(unserialize(file_get_contents($indexFile)), true);
+            if (is_file($indexFile) && is_readable($indexFile) && ($content = file_get_contents($indexFile)) !== false) {
+                $this->_manifest = array_reverse(unserialize($content), true);
             } else {
                 $this->_manifest = [];
             }