From 8eaae9f50a953a4a7f38c9571e3925ddfadff05d Mon Sep 17 00:00:00 2001
From: Ben Beckford <beckford@gmail.com>
Date: Tue, 26 Jan 2021 20:48:19 +0000
Subject: [PATCH 1/2] Suppress error when chdir($oldWorkingDir); unsuccessful

resolves #9649
---
 src/Composer/Console/Application.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Composer/Console/Application.php b/src/Composer/Console/Application.php
index 76629d9c4..8684ea3ed 100644
--- a/src/Composer/Console/Application.php
+++ b/src/Composer/Console/Application.php
@@ -309,8 +309,11 @@ class Application extends BaseApplication
 
             $result = parent::doRun($input, $output);
 
+            // chdir back to $oldWorkingDir if set
             if (isset($oldWorkingDir)) {
-                chdir($oldWorkingDir);
+                Silencer::call(function () use ($oldWorkingDir) {
+                    chdir($oldWorkingDir);
+                });
             }
 
             if (isset($startTime)) {

From 4e0b8c108618ea5e260a61ab13108829e6792413 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Wed, 27 Jan 2021 09:17:25 +0100
Subject: [PATCH 2/2] Update src/Composer/Console/Application.php

---
 src/Composer/Console/Application.php | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/Composer/Console/Application.php b/src/Composer/Console/Application.php
index 8684ea3ed..9d3557e27 100644
--- a/src/Composer/Console/Application.php
+++ b/src/Composer/Console/Application.php
@@ -311,9 +311,7 @@ class Application extends BaseApplication
 
             // chdir back to $oldWorkingDir if set
             if (isset($oldWorkingDir)) {
-                Silencer::call(function () use ($oldWorkingDir) {
-                    chdir($oldWorkingDir);
-                });
+                Silencer::call('chdir', $oldWorkingDir);
             }
 
             if (isset($startTime)) {