[Process] Fix bug which wiped or mangled env vars

pjcdawkins · fabpot · commit 9439237c8130 · 2017-03-27T11:07:02.000-07:00
diff --git a/src/Symfony/Component/Process/Process.php b/src/Symfony/Component/Process/Process.php
@@ -277,7 +277,7 @@ public function start(callable $callback = null)
             }
 
             foreach ($env as $k => $v) {
-                $envBackup[$k] = getenv($v);
+                $envBackup[$k] = getenv($k);
                 putenv(false === $v || null === $v ? $k : "$k=$v");
             }
             $env = null;
diff --git a/src/Symfony/Component/Process/Tests/ProcessTest.php b/src/Symfony/Component/Process/Tests/ProcessTest.php
@@ -1403,6 +1403,20 @@ public function testSetBadEnv()
         $this->assertSame('', $process->getErrorOutput());
     }
 
+    public function testEnvBackupDoesNotDeleteExistingVars()
+    {
+        putenv('existing_var=foo');
+        $process = $this->getProcess('php -r "echo getenv(\'new_test_var\');"');
+        $process->setEnv(array('existing_var' => 'bar', 'new_test_var' => 'foo'));
+        $process->inheritEnvironmentVariables();
+
+        $process->run();
+
+        $this->assertSame('foo', $process->getOutput());
+        $this->assertSame('foo', getenv('existing_var'));
+        $this->assertFalse(getenv('new_test_var'));
+    }
+
     public function testInheritEnvEnabled()
     {
         $process = $this->getProcess(self::$phpBin.' -r '.escapeshellarg('echo serialize($_SERVER);'), null, array('BAR' => 'BAZ'));

Original file line number	Diff line number	Diff line change
`@@ -277,7 +277,7 @@ public function start(callable $callback = null)`
`277`	`277`	`}`
`278`	`278`
`279`	`279`	`foreach ($env as $k => $v) {`
`280`		`- $envBackup[$k] = getenv($v);`
	`280`	`+ $envBackup[$k] = getenv($k);`
`281`	`281`	`putenv(false === $v \|\| null === $v ? $k : "$k=$v");`
`282`	`282`	`}`
`283`	`283`	`$env = null;`