Detecting a Nullable Type via reflection

Question

Surprisingly the following code fails the Assert:

int? wtf = 0;
Assert.IsType>(wtf);

So just out curiosity, how c

Answer 1

int? i = 0;
var type = TypedReference.GetTargetType(__makeref(i));
var isNullable = type.IsGenericType &&
    type.GetGenericTypeDefinition() == typeof(Nullable<>);