class Stuff
{
	private static void Foo(out int y, int x)
	{
		int z;
		Foo(out z, z); // error CS0165: Use of unassigned local variable 'z'
		y = z;
	}
}

12.3.3.21 Invocation expressions and object creation expressions
If the variable v is passed as an out argument (i.e., an argument of the form "out v") in any of the
arguments, then the state of v after expr is definitely assigned. Otherwise, the state of v after expr is the
same as the state of v after argn.



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