Field 'bridge' has not been initialized

[Zverik]

I just got this exception and it is not immediately obvious what happened. I have a class PluginBase subclassed in a plugin as FunctionPlugin.

One thing out of common is that the class does not have a default contructor: there is a single required argument.

E/flutter (30537): [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: dart_eval runtime exception: LateInitializationError: Field 'bridge' has not been initialized.
E/flutter (30537): #0      BridgeSuperShim.bridge (package:dart_eval/src/eval/bridge/runtime_bridge.dart)
E/flutter (30537): #1      BridgeSuperShim.$getProperty (package:dart_eval/src/eval/bridge/runtime_bridge.dart:69:57)
E/flutter (30537): #2      PushObjectProperty.run (package:dart_eval/src/eval/runtime/ops/objects.dart:282:45)
E/flutter (30537): at FunctionPlugin.()
E/flutter (30537): at setup()
E/flutter (30537): 
E/flutter (30537): RUNTIME STATE
E/flutter (30537): =============
E/flutter (30537): Program offset: 34318
E/flutter (30537): Stack sample: [L0: Instance of '$PluginContext', L1: Instance of 'BridgeSuperShim', L2: Instance of '$InstanceImpl', L3: Instance of '$IconData', L4: null, L5: Instance of '$Random', *L6: null, L7: null, L8: null, L9: null]
E/flutter (30537): Args sample: []
E/flutter (30537): Call stack: [0, -1, 34332]
E/flutter (30537): TRACE:
E/flutter (30537): 34312: SetObjectPropertyImpl (L2[0] = L3)
E/flutter (30537): 34313: PushNull ()
E/flutter (30537): 34314: PushArg (L4)
E/flutter (30537): 34315: InvokeExternal (Ex#361)
E/flutter (30537): 34316: PushReturnValue ()
E/flutter (30537): 34317: SetObjectPropertyImpl (L2[1] = L5)
E/flutter (30537): 34318: PushObjectProperty (L2.C5)  <<< EXCEPTION
E/flutter (30537): 34319: PushReturnValue ()
E/flutter (30537): 34320: PushObjectProperty (L2.C3)
E/flutter (30537): 34321: PushReturnValue ()
E/flutter (30537): 
E/flutter (30537): #0      Runtime.execute (package:dart_eval/src/eval/runtime/runtime.dart:876:7)
E/flutter (30537): #1      Runtime.executeLib (package:dart_eval/src/eval/runtime/runtime.dart:854:12)

[Zverik]

Continuing debugging: looks like the constructor body is invoked earlier than building a bridge. If I remove all assignments in constructor contents, it runs normally. Contents in question:

class FunctionPlugin extends PluginBase {
  FunctionPlugin(PluginContext context) : super(context) {
    super.initial = 1;
  }
}

Trace:

E/flutter (31753): 34315: InvokeExternal (Ex#361)
E/flutter (31753): 34316: PushReturnValue ()
E/flutter (31753): 34317: SetObjectPropertyImpl (L2[1] = L5)
E/flutter (31753): 34318: PushSuper (L2.super)
E/flutter (31753): 34319: PushConstantInt (1)
E/flutter (31753): 34320: BoxInt (L7)
E/flutter (31753): 34321: SetObjectProperty (L6.initial = L7)  <<< EXCEPTION
E/flutter (31753): 34322: Pop (2)
E/flutter (31753): 34323: PushNull ()

Replacing this with a getter int get initial => 1 works. Very weird.

[Zverik]

Probably fixed in #206?..