From 2f5a0bd72f8f606230aac3920ed810f206884ad9 Mon Sep 17 00:00:00 2001
From: Christian Flothmann <christian.flothmann@sensiolabs.de>
Date: Fri, 13 Oct 2017 16:04:01 +0200
Subject: [PATCH] fix serialized deprecations handling

---
 .../Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php       | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
index 166c44a3f8..4d9b48dfc7 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/SymfonyTestsListenerTrait.php
@@ -260,7 +260,9 @@ class SymfonyTestsListenerTrait
         }
 
         if ($this->runsInSeparateProcess) {
-            foreach (unserialize(file_get_contents($this->runsInSeparateProcess)) as $deprecation) {
+            $deprecations = file_get_contents($this->runsInSeparateProcess);
+            unlink($this->runsInSeparateProcess);
+            foreach ($deprecations ? unserialize($deprecations) : array() as $deprecation) {
                 if ($deprecation[0]) {
                     trigger_error($deprecation[1], E_USER_DEPRECATED);
                 } else {