Unable to weave async/await

[arontsang]

Fody 4.2.1
Ionad.Fody 1.0.2
MsBuild 15
VS2017

Trying to weave

public static TaskRx
{
public Task Delay(int delay)
{
return Observerable.Timer(delay, RxApp.BackgroundThreadScheduler).ToTask();
}
}

Possibly because I was trying to weave this inside a lambda, will try to create a SSCCE tomorrow at work.

[Simon Cropp]

can u try with the latest version

[arontsang]

As promised, here is a SSCCE. Unfortunately I do not have access to VS2019, so 4.2.1 is the best I can get access to.

    class Program
    {
        static async Task<int> Main(string[] args)
        {
            var ret = Observable.Create<string>(async (observer, cancellation) =>
            {
                await Task.Delay(100, cancellation);
                observer.OnNext("Hello World!");
            });
            using(ret.Subscribe(Console.WriteLine))
            {
                await Task.Delay(100000);
            }
            return 0;
        }
    }

    [StaticReplacement(typeof(Task))]
    public static class TaskRx
    {
        public static Task Delay(int delay, CancellationToken cancellationToken)
        {
            return Observable.Timer(TimeSpan.FromMilliseconds(delay)).ToTask(cancellationToken);
        }

        public static Task Delay(int delay)
        {
            return Observable.Timer(TimeSpan.FromMilliseconds(delay)).ToTask();
        }

    }

This program throws a System.InvalidProgramException in System.Private.CoreLib.dll

Exist persists with
VS2019
MSBuild 16
Fody 5
Ionad 2

[arontsang]

Closing because issue has nothing to do with async/await, and is completely to do with method overloading.