Scope, memory usage and goto

[Erendar]

Well i tried something else

Console.WriteLine("a");
            goto test;
                int i;
                i = 23;
            test:
            i = 54;
            Console.WriteLine(i.ToString());
            Console.ReadKey(true);

I told myself this should raise an exception as i'm putting 54 in i while i is not declared/initalized.

And what happens is that my console actually prints 54 !

I decompiled the IL (with ILSpy) and found that :

Console.WriteLine("a");
			Console.WriteLine(54.ToString());
			Console.ReadKey(true);

How the compiler figured out that ? I didn't compiled in relase, i was in debug. Could someone explains me to what extent the compiler actually interprets the code ?