From b33b9a6ad91703f6ec6997aa16943cc9ffe19851 Mon Sep 17 00:00:00 2001
From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Mon, 2 Dec 2019 15:08:02 +0100
Subject: [PATCH] [DI] Fix making the container path-independent when the app
 is in /app

---
 .../Component/DependencyInjection/Dumper/PhpDumper.php      | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 7596b9953b..4dd4475cbe 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -173,14 +173,14 @@ class PhpDumper extends Dumper
         if (!empty($options['file']) && is_dir($dir = \dirname($options['file']))) {
             // Build a regexp where the first root dirs are mandatory,
             // but every other sub-dir is optional up to the full path in $dir
-            // Mandate at least 2 root dirs and not more that 5 optional dirs.
+            // Mandate at least 1 root dir and not more than 5 optional dirs.
 
             $dir = explode(\DIRECTORY_SEPARATOR, realpath($dir));
             $i = \count($dir);
 
-            if (3 <= $i) {
+            if (2 + (int) ('\\' === \DIRECTORY_SEPARATOR) <= $i) {
                 $regex = '';
-                $lastOptionalDir = $i > 8 ? $i - 5 : 3;
+                $lastOptionalDir = $i > 8 ? $i - 5 : (2 + (int) ('\\' === \DIRECTORY_SEPARATOR));
                 $this->targetDirMaxMatches = $i - $lastOptionalDir;
 
                 while (--$i >= $lastOptionalDir) {