Returning 0 from a generic async method triggers NullGuard

Here’s a simplified version of the situation where I noticed this happening:

public async Task<T> GetThing(Func<T> getThing)
{
    return getThing();
}

GetThing(() => 0);

I’m guessing this happens because you can’t compare the generic return value to null, since it may not be an object. So the generated code is probably comparing to default(T), but for struct types default(T) is not null, and is typically a perfectly legitimate value.

[j2jensen]

@tom-englert You, sir, are a hero.

[tom-englert]

I’ll take care of this