16 lines
253 B
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// CS0019: Operator `==' cannot be applied to operands of type `U' and `null'
// Line: 13
abstract class A<T>
{
public abstract bool Foo<U> (U arg) where U : T;
}
class B : A<byte>
{
public override bool Foo<U> (U arg)
{
return arg == null;
}
}