Automated rollback of commit f9863dfd3c98278e703be0e3c19ded2d09e60fde.

php/ext/google/protobuf/message.c

@@ -65,7 +65,6 @@ static zend_object* Message_create(zend_class_entry* class_type) {
   Message_SuppressDefaultProperties(class_type);
   zend_object_std_init(&intern->std, class_type);
   intern->std.handlers = &message_object_handlers;
-  intern->desc = NULL;
   Arena_Init(&intern->arena);
   return &intern->std;
 }
@@ -90,15 +89,6 @@ static void Message_dtor(zend_object* obj) {
  * Helper function to look up a field given a member name (as a string).
  */
 static const upb_FieldDef* get_field(Message* msg, zend_string* member) {
-  if (!msg || !msg->desc || !msg->desc->msgdef) {
-    zend_throw_exception_ex(NULL, 0,
-                            "Couldn't find descriptor. "
-                            "The message constructor was likely bypassed, "
-                            "resulting in an uninitialized descriptor.");
-
-    return NULL;
-  }
-
   const upb_MessageDef* m = msg->desc->msgdef;
   const upb_FieldDef* f = upb_MessageDef_FindFieldByNameWithSize(
       m, ZSTR_VAL(member), ZSTR_LEN(member));

php/tests/GeneratedClassTest.php

@@ -21,27 +21,12 @@
 use Php\Test\TestNamespace;
 
 # This is not allowed, but we at least shouldn't crash.
-class C extends \Google\Protobuf\Internal\Message
-{
-    public function __construct($data = null)
-    {
+class C extends \Google\Protobuf\Internal\Message {
+    public function __construct($data = null) {
         parent::__construct($data);
     }
 }
 
-# This is not allowed, but we at least shouldn't crash.
-class TestMessageMockProxy extends TestMessage
-{
-    public $_proxy_data = null;
-
-    public function __construct($data = null)
-    {
-        $this->_proxy_data = $data;
-        // bypass parent constructor
-        // This is common behavior by phpunit ond other mock/proxy libraries
-    }
-}
-
 class GeneratedClassTest extends TestBase
 {
 
@@ -1917,38 +1902,6 @@ public function testNoSegfaultWithError()
         new TestMessage(['optional_int32' => $this->throwIntendedException()]);
     }
 
-    public function testNoSegfaultWithContructorBypass()
-    {
-        if (!extension_loaded('protobuf')) {
-            $this->markTestSkipped('PHP Protobuf extension is not loaded');
-        }
-
-        $this->expectException(Exception::class);
-        $this->expectExceptionMessage(
-            "Couldn't find descriptor. " .
-            "The message constructor was likely bypassed, resulting in an uninitialized descriptor."
-        );
-
-        $m = new TestMessageMockProxy(['optional_int32' => 123]);
-
-        /**
-         * At this point the message constructor was bypassed and the descriptor is not initialized.
-         * This is a common PHP pattern where a proxy/mock class extends a concrete class,
-         * frequently used in frameworks like PHPUnit, phpspec, and Mockery.
-         *
-         * When this happens, the message's internal descriptor is never initialized.
-         *
-         * Without proper handling, accessing properties via getters (like $this->getOptionalInt32())
-         * would cause the C extension to segfault when trying to access the uninitialized descriptor.
-         *
-         * Instead of segfaulting, we now detect this uninitialized state and throw an exception.
-         *
-         * See: https://github.com/protocolbuffers/protobuf/issues/19978
-         */
-
-        $m->getOptionalInt32();
-    }
-
     public function testNoExceptionWithVarDump()
     {
         $m = new Sub(['a' => 1]);