using System;
public class Test
{
public static void Main()
{
A();
Console.WriteLine("Hello world");
}
public static unsafe void A()
{
string s = string.Intern("Hello world");
fixed (char* p = s)
{
p[6] = 'b'; p[7] = 'u'; p[8] = 'g'; p[9] = 's'; p[10] = '!';
}
}
}
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