From 291c73a2909a59c9986cc197b003e0a30ec4a9c2 Mon Sep 17 00:00:00 2001
From: Matthias Althaus <matthias.althaus@iserv.eu>
Date: Thu, 11 Apr 2019 13:28:50 +0200
Subject: [PATCH] Catch empty deprecation.log silently (fixes #31050)

---
 .../HttpKernel/DataCollector/LoggerDataCollector.php        | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
index 1d95b8b566a5..a8dda9f671d1 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
@@ -126,9 +126,13 @@ private function getContainerDeprecationLogs()
             return [];
         }
 
+        if ('' === $logContent = trim(file_get_contents($file))) {
+            return [];
+        }
+
         $bootTime = filemtime($file);
         $logs = [];
-        foreach (unserialize(file_get_contents($file)) as $log) {
+        foreach (unserialize($logContent) as $log) {
             $log['context'] = ['exception' => new SilencedErrorContext($log['type'], $log['file'], $log['line'], $log['trace'], $log['count'])];
             $log['timestamp'] = $bootTime;
             $log['priority'] = 100;