[ddc] Generic callable leads to "NoSuchMethodError"

[srujzs]

Originally reported here: #54342 (comment)

class CallableObject {
  const CallableObject();

  void call() {
    print("CallableObject called");
  }
}

class ValueContainer<T> {
  ValueContainer(this.value);
  final T value;
  final value2 = const CallableObject();
}

void main() {
  final b = ValueContainer(const CallableObject());
  b.value2(); // Runs correctly and calls the "call" function
  b.value.call(); // Also runs correctly
  b.value(); // NoSuchMethodError: tried to call a non-function, such as null: 'b.value'
}

It looks like DDC interprets b.value() as a method call and not a property get + call. This passes in dart2js.

[joranmulderij]

Sorry it was late when I finally debugged my way to this isolated case, and when I saw the issue where I posted the comment, I did not fully read the issue. Thanks for looking at it and creating a new issue.

I figured it was probably interpreting b.value() as a method call.

This issue does not occur in flutter builds to windows in debug mode, but does occur in both web-debug and web-release.

What might also be interesting to know that in trying to debug this and come up with the isolated example above I also figured out that b.value() executed from the debugger also results in an error.