Closed
Description
Description
Calling Environment.StackTrace from a default interface method of a generic interface causes a crash in the Mono runtime.
Reproduction Steps
Compile and run the following program with the Mono runtime...
using System;
namespace DefItf
{
public interface IPublisher<out TData>
{
event Action<TData> OnPublish;
}
public interface ISubscriber<T>
{
void OnReceiveSubscription(T data);
void Subscribe(IPublisher<T> publisher)
{
InternalSubscribe(this, publisher);
}
void Unsubscribe(IPublisher<T> publisher)
{
InternalUnsubscribe(this, publisher);
}
protected static void InternalSubscribe(ISubscriber<T> subscriber, IPublisher<T> publisher)
{
publisher.OnPublish += subscriber.OnReceiveSubscription;
Console.WriteLine(Environment.StackTrace.ToString());
}
protected static void InternalUnsubscribe(ISubscriber<T> subscriber, IPublisher<T> publisher)
{
publisher.OnPublish -= subscriber.OnReceiveSubscription;
Console.WriteLine(Environment.StackTrace.ToString());
}
}
public class PubTest :IPublisher<InputData>
{
public event Action<InputData> OnPublish;
public void Call() => OnPublish?.Invoke(new InputData());
}
public class InputData
{
public int i;
}
public class Program : ISubscriber<InputData>
{
static void Main(string[] args)
{
new Program().Start();
}
// Start is called before the first frame update
public void Start()
{
var pub = new PubTest();
var sub = (ISubscriber<InputData>)this;
sub.Subscribe(pub);
pub.Call();
sub.Unsubscribe(pub);
}
public void Subscribe(IPublisher<InputData> publisher)
{
ISubscriber<InputData>.InternalSubscribe(this, publisher);
}
public void OnReceiveSubscription(InputData data)
{
Console.WriteLine($"do something");
}
}
}
Expected behavior
Program completes without crashing and the output is written to the screen.
Actual behavior
Program crashes.
Regression?
Not a regression
Known Workarounds
No known workarounds.
Configuration
- Tested with Mono runtime build from code, main branch 56d807d.
- Verified on Windows and Linux x64
Other information
No response