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test-115.cs « tests « mcs - github.com/mono/mono.git - Unnamed repository; edit this file 'description' to name the repository.
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//
// This is a compile test, submitted by Joe.   We really need
// a more thorough set of tests for the user defined explicit
// conversions
//
using System;

class A {
	public static explicit operator X (A foo)
	{
		X myX = new X();

		return myX;
	}
}

class X {
}

class Y : X {
}

class blah {
	public static int Main ()
	{
		A testA = new A();
		
		X testX = (X) testA;

		try {
			Y testY = (Y) testA;
		} catch (InvalidCastException){
			return 0;
		}

		//
		// We should have thrown the exception above
		//
		return 1;
	}
}