87 lines
1.0 KiB
C#
87 lines
1.0 KiB
C#
using System;
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public struct Foo
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{
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public readonly long Value;
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public Foo (long value)
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{
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this.Value = value;
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}
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public static implicit operator Foo (long value)
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{
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return new Foo (value);
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}
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}
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public struct Bar
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{
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public readonly Foo Foo;
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public Bar (Foo foo)
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{
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this.Foo = foo;
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}
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public static implicit operator Bar (Foo foo)
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{
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return new Bar (foo);
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}
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}
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public struct Baz
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{
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public readonly Foo Foo;
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public Baz (Foo foo)
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{
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this.Foo = foo;
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}
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public static explicit operator Baz (Foo foo)
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{
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return new Baz (foo);
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}
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}
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struct S
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{
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public static implicit operator bool?(S arg)
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{
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throw new ApplicationException ("should not be called");
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}
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}
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class X
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{
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public static int Main ()
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{
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int a = 3;
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int? b = a;
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int? b0 = null;
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Foo? f1 = a;
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Foo? f2 = b;
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Foo? f3 = b0;
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Foo f4 = (Foo) b;
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Bar? b1 = f1;
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Bar? b2 = f2;
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Bar? b3 = f3;
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Bar b4 = (Bar) f2;
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Baz? z1 = (Baz?) f1;
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Baz? z2 = (Baz?) f2;
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Baz? z3 = (Baz?) f3;
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Baz z4 = (Baz) f2;
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S? s = null;
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bool? g = s;
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if (g != null)
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return 1;
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return 0;
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}
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}
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