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using System;
struct S
{
}
class C
{
public static int ConversionCalled;
public static implicit operator S (C c)
{
++ConversionCalled;
return new S ();
}
}
class Program
{
static C field;
static int Main ()
{
C c = new C ();
var x = c ?? new S ();
if (C.ConversionCalled != 1)
return 1;
c = null;
x = c ?? new S ();
if (C.ConversionCalled != 1)
return 2;
x = field ?? new S ();
if (C.ConversionCalled != 1)
return 3;
return 0;
}
}
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