[pigeon] Map<int?, …> causes java.lang.TypeCastException in Kotlin

[yanshouwang]

Is there an existing issue for this?

• I have searched the existing package issues
• I have read the guide to filing a bug

What package does this bug report belong to?

pigeon

What target platforms are you seeing this bug on?

Android

Have you already upgraded your packages?

Yes

Dependency versions

pubspec.lock

# Generated by pub
# See https://dart.dev/tools/pub/glossary#lockfile
packages:
  _fe_analyzer_shared:
    dependency: transitive
    description:
      name: _fe_analyzer_shared
      sha256: ae92f5d747aee634b87f89d9946000c2de774be1d6ac3e58268224348cd0101a
      url: "https://pub.dev"
    source: hosted
    version: "61.0.0"
  analyzer:
    dependency: transitive
    description:
      name: analyzer
      sha256: ea3d8652bda62982addfd92fdc2d0214e5f82e43325104990d4f4c4a2a313562
      url: "https://pub.dev"
    source: hosted
    version: "5.13.0"
  args:
    dependency: transitive
    description:
      name: args
      sha256: eef6c46b622e0494a36c5a12d10d77fb4e855501a91c1b9ef9339326e58f0596
      url: "https://pub.dev"
    source: hosted
    version: "2.4.2"
  async:
    dependency: transitive
    description:
      name: async
      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
      url: "https://pub.dev"
    source: hosted
    version: "2.11.0"
  boolean_selector:
    dependency: transitive
    description:
      name: boolean_selector
      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
  characters:
    dependency: transitive
    description:
      name: characters
      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
      url: "https://pub.dev"
    source: hosted
    version: "1.3.0"
  clock:
    dependency: transitive
    description:
      name: clock
      sha256: cb6d7f03e1de671e34607e909a7213e31d7752be4fb66a86d29fe1eb14bfb5cf
      url: "https://pub.dev"
    source: hosted
    version: "1.1.1"
  collection:
    dependency: transitive
    description:
      name: collection
      sha256: f092b211a4319e98e5ff58223576de6c2803db36221657b46c82574721240687
      url: "https://pub.dev"
    source: hosted
    version: "1.17.2"
  convert:
    dependency: transitive
    description:
      name: convert
      sha256: "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592"
      url: "https://pub.dev"
    source: hosted
    version: "3.1.1"
  crypto:
    dependency: transitive
    description:
      name: crypto
      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
      url: "https://pub.dev"
    source: hosted
    version: "3.0.3"
  cupertino_icons:
    dependency: "direct main"
    description:
      name: cupertino_icons
      sha256: d57953e10f9f8327ce64a508a355f0b1ec902193f66288e8cb5070e7c47eeb2d
      url: "https://pub.dev"
    source: hosted
    version: "1.0.6"
  fake_async:
    dependency: transitive
    description:
      name: fake_async
      sha256: "511392330127add0b769b75a987850d136345d9227c6b94c96a04cf4a391bf78"
      url: "https://pub.dev"
    source: hosted
    version: "1.3.1"
  file:
    dependency: transitive
    description:
      name: file
      sha256: "5fc22d7c25582e38ad9a8515372cd9a93834027aacf1801cf01164dac0ffa08c"
      url: "https://pub.dev"
    source: hosted
    version: "7.0.0"
  flutter:
    dependency: "direct main"
    description: flutter
    source: sdk
    version: "0.0.0"
  flutter_lints:
    dependency: "direct dev"
    description:
      name: flutter_lints
      sha256: a25a15ebbdfc33ab1cd26c63a6ee519df92338a9c10f122adda92938253bef04
      url: "https://pub.dev"
    source: hosted
    version: "2.0.3"
  flutter_test:
    dependency: "direct dev"
    description: flutter
    source: sdk
    version: "0.0.0"
  glob:
    dependency: transitive
    description:
      name: glob
      sha256: "0e7014b3b7d4dac1ca4d6114f82bf1782ee86745b9b42a92c9289c23d8a0ab63"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.2"
  lints:
    dependency: transitive
    description:
      name: lints
      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
  matcher:
    dependency: transitive
    description:
      name: matcher
      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
      url: "https://pub.dev"
    source: hosted
    version: "0.12.16"
  material_color_utilities:
    dependency: transitive
    description:
      name: material_color_utilities
      sha256: "9528f2f296073ff54cb9fee677df673ace1218163c3bc7628093e7eed5203d41"
      url: "https://pub.dev"
    source: hosted
    version: "0.5.0"
  meta:
    dependency: transitive
    description:
      name: meta
      sha256: "3c74dbf8763d36539f114c799d8a2d87343b5067e9d796ca22b5eb8437090ee3"
      url: "https://pub.dev"
    source: hosted
    version: "1.9.1"
  package_config:
    dependency: transitive
    description:
      name: package_config
      sha256: "1c5b77ccc91e4823a5af61ee74e6b972db1ef98c2ff5a18d3161c982a55448bd"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.0"
  path:
    dependency: transitive
    description:
      name: path
      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
      url: "https://pub.dev"
    source: hosted
    version: "1.8.3"
  pigeon:
    dependency: "direct dev"
    description:
      name: pigeon
      sha256: "4a1457f3abeff9fb7111250ec16ad1410f3ddfdd0572b071766cbbbc0b49163b"
      url: "https://pub.dev"
    source: hosted
    version: "12.0.0"
  pub_semver:
    dependency: transitive
    description:
      name: pub_semver
      sha256: "40d3ab1bbd474c4c2328c91e3a7df8c6dd629b79ece4c4bd04bee496a224fb0c"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.4"
  sky_engine:
    dependency: transitive
    description: flutter
    source: sdk
    version: "0.0.99"
  source_span:
    dependency: transitive
    description:
      name: source_span
      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
      url: "https://pub.dev"
    source: hosted
    version: "1.10.0"
  stack_trace:
    dependency: transitive
    description:
      name: stack_trace
      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
      url: "https://pub.dev"
    source: hosted
    version: "1.11.0"
  stream_channel:
    dependency: transitive
    description:
      name: stream_channel
      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.1"
  string_scanner:
    dependency: transitive
    description:
      name: string_scanner
      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
      url: "https://pub.dev"
    source: hosted
    version: "1.2.0"
  term_glyph:
    dependency: transitive
    description:
      name: term_glyph
      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
      url: "https://pub.dev"
    source: hosted
    version: "1.2.1"
  test_api:
    dependency: transitive
    description:
      name: test_api
      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
      url: "https://pub.dev"
    source: hosted
    version: "0.6.0"
  typed_data:
    dependency: transitive
    description:
      name: typed_data
      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
      url: "https://pub.dev"
    source: hosted
    version: "1.3.2"
  vector_math:
    dependency: transitive
    description:
      name: vector_math
      sha256: "80b3257d1492ce4d091729e3a67a60407d227c27241d6927be0130c98e741803"
      url: "https://pub.dev"
    source: hosted
    version: "2.1.4"
  watcher:
    dependency: transitive
    description:
      name: watcher
      sha256: "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8"
      url: "https://pub.dev"
    source: hosted
    version: "1.1.0"
  web:
    dependency: transitive
    description:
      name: web
      sha256: dc8ccd225a2005c1be616fe02951e2e342092edf968cf0844220383757ef8f10
      url: "https://pub.dev"
    source: hosted
    version: "0.1.4-beta"
  yaml:
    dependency: transitive
    description:
      name: yaml
      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
      url: "https://pub.dev"
    source: hosted
    version: "3.1.2"
sdks:
  dart: ">=3.1.0 <4.0.0"

Steps to reproduce

1. Write a method with an arguments which contains a Map<int?, Uint8List?> field in my_api.dart.
2. Run dart run pigeon --input my_api.dart
3. Implement the method
4. Run the app, the app will throw TypeCastException when call the method.

Expected results

print the arguments on the console when call the testTypeCastError method.

Actual results

throws ClassCastException when call the testTypeCastError method.

Code sample

Code sample

I have created a example project here:
https://github.com/yanshouwang/errors/tree/master/type_cast_error

Screenshots or Videos

Screenshots / Video demonstration

[Upload media here]

Logs

Logs

PlatformException (PlatformException(ClassCastException, java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long, Cause: null, Stacktrace: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
	at dev.yanshouwang.type_cast_error.MyApi.testTypeCastError(MyApi.kt:13)
	at dev.yanshouwang.type_cast_error.MyHostApi$Companion.setUp$lambda-1$lambda-0(MyApi.g.kt:107)
	at dev.yanshouwang.type_cast_error.MyHostApi$Companion.$r8$lambda$n7x4kB29w_fyXQToYeCQWY7GaqI(Unknown Source:0)
	at dev.yanshouwang.type_cast_error.MyHostApi$Companion$$ExternalSyntheticLambda0.onMessage(Unknown Source:2)
	at io.flutter.plugin.common.BasicMessageChannel$IncomingMessageHandler.onMessage(BasicMessageChannel.java:219)
	at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
	at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:322)
	at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
	at android.os.Handler.handleCallback(Handler.java:942)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loopOnce(Looper.java:240)
	at android.os.Looper.loop(Looper.java:351)
	at android.app.ActivityThread.main(ActivityThread.java:8427)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:584)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1013)
, null))

Flutter Doctor output

Doctor output

PS C:\Users\yanshouwang> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.13.0, on Microsoft Windows [版本 10.0.19045.3448], locale zh-CN)
[✓] Windows Version (Installed version of Windows is version 10 or higher)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Chrome - develop for the web
[✓] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.7.2)
[✓] Android Studio (version 2022.3)
[✓] VS Code, 64-bit edition (version 1.82.2)
[✓] Proxy Configuration
[✓] Connected device (4 available)
[✓] Network resources

• No issues found!

[danagbemava-nc]

Reproducible using the code sample provided above.

flutter doctor -v

[!] Flutter (Channel stable, 3.13.6, on macOS 14.0 23A344 darwin-arm64, locale en-GB)
    • Flutter version 3.13.6 on channel stable at /Users/nexus/dev/sdks/flutter
    ! Warning: `flutter` on your path resolves to /Users/nexus/dev/sdks/flutters/bin/flutter, which is not inside your current Flutter SDK checkout at /Users/nexus/dev/sdks/flutter. Consider adding /Users/nexus/dev/sdks/flutter/bin to the front of your path.
    ! Warning: `dart` on your path resolves to /Users/nexus/dev/sdks/flutters/bin/dart, which is not inside your current Flutter SDK checkout at /Users/nexus/dev/sdks/flutter. Consider adding /Users/nexus/dev/sdks/flutter/bin to the front of your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision ead455963c (12 days ago), 2023-09-26 18:28:17 -0700
    • Engine revision a794cf2681
    • Dart version 3.1.3
    • DevTools version 2.25.0
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-33, build-tools 33.0.1
    • Java binary at: /Users/nexus/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
    • Xcode at /Applications/Xcode-15.0.0-Release.Candidate.app/Contents/Developer
    • Build 15A240d
    • CocoaPods version 1.13.0

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.3)
    • Android Studio at /Users/nexus/Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)

[✓] IntelliJ IDEA Ultimate Edition (version 2023.2.2)
    • IntelliJ at /Users/nexus/Applications/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 75.1.4
    • Dart plugin version 232.9559.10

[✓] VS Code (version 1.83.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.74.0

[✓] Connected device (4 available)
    • 28291FDH2001SA (mobile) • 28291FDH2001SA            • android-arm    • Android null (API null)
    • Nexus (mobile)          • 00008020-001875E83A38002E • ios            • iOS 17.0.3 21A360
    • macOS (desktop)         • macos                     • darwin-arm64   • macOS 14.0 23A344 darwin-arm64
    • Chrome (web)            • chrome                    • web-javascript • Google Chrome 117.0.5938.149
    ! Error: Browsing on the local area network for Dean’s iPad. Ensure the device is unlocked and attached with a cable or associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 1 category.

[✓] Flutter (Channel master, 3.16.0-6.0.pre.39, on macOS 14.0 23A344 darwin-arm64, locale en-GB)
    • Flutter version 3.16.0-6.0.pre.39 on channel master at /Users/nexus/dev/sdks/flutters
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision e27dc0a3f5 (5 hours ago), 2023-10-08 22:51:26 -0400
    • Engine revision e58a9b3c54
    • Dart version 3.3.0 (build 3.3.0-1.0.dev)
    • DevTools version 2.28.1

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-33, build-tools 33.0.1
    • Java binary at: /Users/nexus/Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
    • Xcode at /Applications/Xcode-15.0.0-Release.Candidate.app/Contents/Developer
    • Build 15A240d
    • CocoaPods version 1.13.0

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2022.3)
    • Android Studio at /Users/nexus/Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)

[✓] IntelliJ IDEA Ultimate Edition (version 2023.2.2)
    • IntelliJ at /Users/nexus/Applications/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 75.1.4
    • Dart plugin version 232.9559.10

[✓] VS Code (version 1.83.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.74.0

[✓] Connected device (4 available)
    • 28291FDH2001SA (mobile) • 28291FDH2001SA            • android-arm    • Android null (API null)
    • Nexus (mobile)          • 00008020-001875E83A38002E • ios            • iOS 17.0.3 21A360
    • macOS (desktop)         • macos                     • darwin-arm64   • macOS 14.0 23A344 darwin-arm64
    • Chrome (web)            • chrome                    • web-javascript • Google Chrome 117.0.5938.149
    ! Error: Browsing on the local area network for Dean’s iPad. Ensure the device is unlocked and attached with a cable or associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources
    • All expected network resources are available.

• No issues found!