43 lines
448 B
C#
43 lines
448 B
C#
|
using System;
|
||
|
|
|
||
|
|
class R<T, U>
|
||
|
|
where T : System.IDisposable
|
||
|
|
where U : T
|
||
|
|
{
|
||
|
|
public void M (U u)
|
||
|
|
{
|
||
|
|
using (u) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct S<T, U>
|
||
|
|
where T : System.IDisposable
|
||
|
|
where U : struct, T
|
||
|
|
{
|
||
|
|
public void M (U u)
|
||
|
|
{
|
||
|
|
using (u) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class X : IDisposable
|
||
|
|
{
|
||
|
|
public void Dispose ()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void Main ()
|
||
|
|
{
|
||
|
|
new R<X, X> ().M (new X ());
|
||
|
|
new S<Y, Y> ().M (new Y ());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct Y : IDisposable
|
||
|
|
{
|
||
|
|
public void Dispose ()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
}
|