[Mono-bugs] [Bug 395845] New: gmcs fails to compile nullable user defined unary operators

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=395845


           Summary: gmcs fails to compile nullable user defined unary
                    operators
           Product: Mono: Compilers
           Version: SVN
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: C#
        AssignedTo: msafar at novell.com
        ReportedBy: jbevain at novell.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


The following test case compiles with csc and should print OK:

>>>>>>>>>>>>>>>>>>>>
using System;

struct Foo {

        public int Value;

        public Foo (int value)
        {
                this.Value = value;
        }

        public static Foo operator - (Foo? f)
        {
                if (f.HasValue)
                        return new Foo (-f.Value.Value);

                return new Foo (42);
        }
}

struct Bar {

        public int Value;

        public Bar (int value)
        {
                this.Value = value;
        }

        public static Bar? operator - (Bar? b)
        {
                if (b.HasValue)
                        return new Bar (-b.Value.Value);

                return b;
        }
}

class Test {

        static Foo NegateFoo (Foo f)
        {
                return -f;
        }

        static Foo NegateFooNullable (Foo? f)
        {
                return -f;
        }

        static Bar? NegateBarNullable (Bar? b)
        {
                return -b;
        }

        static Bar? NegateBar (Bar b)
        {
                return -b;
        }

        static int Main ()
        {
                if (NegateFooNullable (null).Value != 42)
                        return 1;

                if (NegateFoo (new Foo (2)).Value != -2)
                        return 2;

                if (NegateBarNullable (null) != null)
                        return 3;

                if (NegateBar (new Bar (2)).Value.Value != -2)
                        return 4;

                Console.WriteLine ("OK");
                return 0;
        }
}
<<<<<<<<<<<<<<<<<


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