Question

When I try to implement a get-set-property with a body and use that set, it always exits with a SIGSEGV — a segmentation fault. I’m running Mono 2.10.9 + MonoDevelop 3.0.3.5 all under Mac OS X Mountain Lion (10.8). Here’s the minimum amount of code I can get it to do this with:

public class MainClass {
    public static int Main(string[] args) {
        Foo foo = new Foo();
        foo.Bar = 42;        // Never makes it past this line
        return 0;
    }
}

public class Foo {
    public int Bar {
        get { return Bar; }
        set { Bar = value; }
    }
}

Am I doing something wrong, or is this a Mono bug?

Answer 1

Try changing your code to this:

public class Foo {
    public int Bar { get; set; }
}

OR this:

public class Foo {
    private int _bar;
    public int Bar {
       get { return _bar; }
       set { _bar = value; }
    }
}

You don’t have a backing store. You either need to add one, or use an auto property. The way your code is written you are recursively calling get/set when you are accessing those properties.