From 18d426871e8854123063ff56dc3046fe1bd365ca Mon Sep 17 00:00:00 2001
From: Thomas Calvet <calvet.thomas@gmail.com>
Date: Fri, 22 Jan 2021 09:23:15 +0100
Subject: [PATCH] [Console][Command] Fix Closure code binding when it is a
 static anonymous function

---
 src/Symfony/Component/Console/Command/Command.php    |  9 ++++++++-
 .../Component/Console/Tests/Command/CommandTest.php  | 12 ++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/Console/Command/Command.php b/src/Symfony/Component/Console/Command/Command.php
index c2b1f4c7e9..71ad4a49e9 100644
--- a/src/Symfony/Component/Console/Command/Command.php
+++ b/src/Symfony/Component/Console/Command/Command.php
@@ -281,7 +281,14 @@ class Command
         if ($code instanceof \Closure) {
             $r = new \ReflectionFunction($code);
             if (null === $r->getClosureThis()) {
-                $code = \Closure::bind($code, $this);
+                set_error_handler(static function () {});
+                try {
+                    if ($c = \Closure::bind($code, $this)) {
+                        $code = $c;
+                    }
+                } finally {
+                    restore_error_handler();
+                }
             }
         }
 
diff --git a/src/Symfony/Component/Console/Tests/Command/CommandTest.php b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
index 34156f7b52..9e1ae05eb1 100644
--- a/src/Symfony/Component/Console/Tests/Command/CommandTest.php
+++ b/src/Symfony/Component/Console/Tests/Command/CommandTest.php
@@ -398,6 +398,18 @@ class CommandTest extends TestCase
     {
         $output->writeln('from the code...');
     }
+
+    public function testSetCodeWithStaticAnonymousFunction()
+    {
+        $command = new \TestCommand();
+        $command->setCode(static function (InputInterface $input, OutputInterface $output) {
+            $output->writeln(isset($this) ? 'bound' : 'not bound');
+        });
+        $tester = new CommandTester($command);
+        $tester->execute([]);
+
+        $this->assertEquals('interact called'.\PHP_EOL.'not bound'.\PHP_EOL, $tester->getDisplay());
+    }
 }
 
 // In order to get an unbound closure, we should create it outside a class