java/core/src/test/proto/com/google/protobuf/map_initialization_order_test.proto

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

// Regression test for a map initialization order bug. The bug only manifests
// when:
//   1. A message contains map fields and is also extendable.
//   2. There is a file-level extension defined in the same file referencing
//      the above message as the extension type.
//   3. The program executes in the following order:
//        a. getDescriptor() is called on another message in the same file.
//        b. use protobuf reflection to access the map field.
// The symptom is a NullPointerException being thrown.
edition = "2023";

package map_test;

option features.utf8_validation = NONE;
option java_package = "map_test";
option java_outer_classname = "MapInitializationOrderTest";
option java_multiple_files = true;

// Mirrors the structure of
// javatests/com/google/cloud/common/logging/logging_test.proto.

message Message1 {
  map<string, bool> map_field = 1;

  extensions 1000 to max;
}

extend Message1 {
  Message1 recursive_extension = 1001;
}

message RedactAllTypes {}