Status of Language preview feature Null-checking parameters !!

sgmoore

Not sure if this is a bug or just because it is a preview feature but the following throws a System.NullReferenceException when compiling

void Main()
{
    System.Environment.Version.Dump();
    Test(null); 
}

private void Test(string x!!)
{
    x.Dump(); 
}

'Enable C#/F# Preview Features' in preferences is checked.

JoeAlbahari

Yes, I've noticed this, too - it's an issue in Roslyn 7.1. If all goes to plan, I'll soon be releasing a Roslyn Daily build option soon, so you won't have to wait for 7.2.

JoeAlbahari

Try now: -the Roslyn Daily option is back in Edit | Preferences > Query.

sgmoore

Thanks.