symfony
diff --git a/‎src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+1-1Lines changed: 1 addition & 1 deletion b/‎src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Session/Storage/NativeSessionStorage.php
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
+21-2Lines changed: 21 additions & 2 deletions b/‎src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpFoundation/Tests/Session/Storage/NativeSessionStorageTest.php
+21-2Lines changed: 21 additions & 2 deletions
@@ -153,7 +153,7 @@ public function start()
         }
 
         $sessionId = $_COOKIE[session_name()] ?? null;
-        if ($sessionId && !preg_match('/^[a-zA-Z0-9,-]{22,}$/', $sessionId)) {
+        if ($sessionId && $this->saveHandler instanceof AbstractProxy && 'files' === $this->saveHandler->getSaveHandlerName() && !preg_match('/^[a-zA-Z0-9,-]{22,}$/', $sessionId)) {
             // the session ID in the header is invalid, create a new one
             session_id(session_create_id());
         }
 
@@ -294,12 +294,31 @@ public function testGetBagsOnceSessionStartedIsIgnored()
         $this->assertEquals($storage->getBag('flashes'), $bag);
     }
 
-    public function testRegenerateInvalidSessionId()
+    public function testRegenerateInvalidSessionIdForNativeFileSessionHandler()
     {
         $_COOKIE[session_name()] = '&~[';
-        $started = (new NativeSessionStorage())->start();
+        session_id('&~[');
+        $storage = new NativeSessionStorage([], new NativeFileSessionHandler());
+        $started = $storage->start();
 
         $this->assertTrue($started);
         $this->assertMatchesRegularExpression('/^[a-zA-Z0-9,-]{22,}$/', session_id());
+        $storage->save();
+
+        $_COOKIE[session_name()] = '&~[';
+        session_id('&~[');
+        $storage = new NativeSessionStorage([], new SessionHandlerProxy(new NativeFileSessionHandler()));
+        $started = $storage->start();
+
+        $this->assertTrue($started);
+        $this->assertMatchesRegularExpression('/^[a-zA-Z0-9,-]{22,}$/', session_id());
+        $storage->save();
+
+        $_COOKIE[session_name()] = '&~[';
+        session_id('&~[');
+        $storage = new NativeSessionStorage([], new NullSessionHandler());
+        $started = $storage->start();
+        $this->assertTrue($started);
+        $this->assertSame('&~[', session_id());
     }
 }
Original file line number	Diff line number	Diff line change
`@@ -153,7 +153,7 @@ public function start()`
`153`	`153`	`}`
`154`	`154`
`155`	`155`	`$sessionId = $_COOKIE[session_name()] ?? null;`
`156`		`- if ($sessionId && !preg_match('/^[a-zA-Z0-9,-]{22,}$/', $sessionId)) {`
	`156`	`+ if ($sessionId && $this->saveHandler instanceof AbstractProxy && 'files' === $this->saveHandler->getSaveHandlerName() && !preg_match('/^[a-zA-Z0-9,-]{22,}$/', $sessionId)) {`
`157`	`157`	`// the session ID in the header is invalid, create a new one`
`158`	`158`	`session_id(session_create_id());`
`159`	`159`	`}`