building on tumbleweed. generated_bridge.dart differ from the one of debian and throw Type errors #3109

grummbeer · 2023-02-07T17:45:19Z

grummbeer
Feb 7, 2023

I have no clue whats going on here, maybe some one can explain me what is going wrong.

Tumbleweed and Ubuntu 22.04, same setup on both machines

latest rustup via script,
flutter/dart (using master)
vcpkg (using master)

Flutter 3.8.0-5.0.pre • channel master • https://github.com/flutter/flutter.git
Framework • revision 40b5e4cb5e (vor 24 Stunden) • 2023-02-06 21:45:39 +0500
Engine • revision 2a104cdfcd
Tools • Dart 3.0.0 (build 3.0.0-204.0.dev) • DevTools 2.21.1
cargo 1.67.0 (8ecd4f20a 2023-01-10)
rustc 1.67.0 (fc594f156 2023-01-24)

Now, when run ./run.sh, Ubuntu launch the app but on tumbleweed a lot of "Type" errors are thrown.

ERROR: lib/models/model.dart:275:22: Error: The argument type 'bool' can't be assigned to the parameter type 'NativeFunction<Int Function(Pointer<Int>)>?'.
ERROR:  - 'NativeFunction' is from 'dart:ffi'.
ERROR:  - 'Int' is from 'dart:ffi'.
ERROR:  - 'Pointer' is from 'dart:ffi'.
ERROR:           hasCancel: false);

The reason is, that the generated_bridge.dart from tumbleweed is different from the ubuntu one. Copy the ubuntu one to the tumbleweed machine works.

Some examples:

// ubuntu
typedef DartPostCObjectFnType = ffi.Pointer<ffi.NativeFunction<ffi.Bool Function(DartPort, ffi.Pointer<ffi.Void>)>>;
typedef DartPort = ffi.Int64;
//      ^^^^^^^^^^^^^^^^^^^^  not present on tumbleweed

// tumbleweed defines a type "bool" what is an "int"?
typedef bool = ffi.NativeFunction<ffi.Int Function(ffi.Pointer<ffi.Int>)>;
     // ^^^^        bool vs. int?     ^^^                          ^^^

// ubuntu
  void store_dart_post_cobject(
    DartPostCObjectFnType ptr,
    ^^^^^^^^^^^^^^^^^^^^^ bool? ffi.Pointer<ffi.NativeFunction<ffi.Bool Function(DartPort, ffi.Pointer<ffi.Void>)>>;
  ) {
    return _store_dart_post_cobject(
      ptr,
    );
  }

  late final _store_dart_post_cobjectPtr = _lookup<ffi.NativeFunction<ffi.Void Function(DartPostCObjectFnType)>>('store_dart_post_cobject');
                                                                                    //  ^^^^^^^^^^^^^^^^^^^^^ bool?
  late final _store_dart_post_cobject = _store_dart_post_cobjectPtr.asFunction<void Function(DartPostCObjectFnType)>();
                                                                                        //  ^^^^^^^^^^^^^^^^^^^^^ bool?      

// tumbleweed
  void store_dart_post_cobject(
    int ptr,
    ^^^
  ) {
    return _store_dart_post_cobject(
      ptr,
    );
  }

  late final _store_dart_post_cobjectPtr = _lookup<ffi.NativeFunction<ffi.Void Function(ffi.Int)>>('store_dart_post_cobject');
                                                                                         // ^^^ int?
  late final _store_dart_post_cobject = _store_dart_post_cobjectPtr.asFunction<void Function(int)>();
                                                                                          // ^^^ int?

 // ubuntu
  bool rustdesk_core_main() {
  ^^^^
    return _rustdesk_core_main();
  }

  late final _rustdesk_core_mainPtr = _lookup<ffi.NativeFunction<ffi.Bool Function()>>('rustdesk_core_main');
                                                                  // ^^^^
  late final _rustdesk_core_main = _rustdesk_core_mainPtr.asFunction<bool Function()>();
                                                                  // ^^^^

 // tumbleweed
  int rustdesk_core_main() {
  ^^^
    return _rustdesk_core_main();
  }

  late final _rustdesk_core_mainPtr = _lookup<ffi.NativeFunction<ffi.Int Function()>>('rustdesk_core_main');
                                                                  // ^^^
  late final _rustdesk_core_main = _rustdesk_core_mainPtr.asFunction<int Function()>();
                                                                  // ^^^