[Mono-bugs] [Bug 568989] New: linq expression code causes mono_method_to_ir assertion

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=568989

http://bugzilla.novell.com/show_bug.cgi?id=568989#c0


           Summary: linq expression code causes mono_method_to_ir
                    assertion
    Classification: Mono
           Product: Mono: Runtime
           Version: 2.6.x
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: JIT
        AssignedTo: lupus at novell.com
        ReportedBy: ck at carlo-kok.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.7)
Gecko/20091221 Firefox/3.5.7

Code in "additional information" throws a runtime assertion (while on .net it
runs fine). 

Reproducible: Always

Steps to Reproduce:
1. compile the code in the additional info field
2. run it 

Actual Results:  
**
ERROR:method-to-ir.c:5426:mono_method_to_ir: assertion failed:
(sig->generic_par
am_count)

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.


Expected Results:  
1 Test One


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Linq.Expressions;
namespace ConsoleApplication98
{

    class MyTest
    {
        public int? ID { get; set; }
        public string Name { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            List<MyTest> t = new List<MyTest>();
            t.Add(new MyTest { ID = 1, Name = "Test One" });
            t.Add(new MyTest { ID = 2, Name = "Test Two" });


            ParameterExpression exp = Expression.Parameter(typeof(MyTest),
"T");
            Expression body = 
                Expression.Equal(
                Expression.Call(
                Expression.Property(exp, "ID"), "GetValueOrDefault", new
Type[0], Expression.Constant(-1)),
                Expression.Constant(1));
            var where = (Func<MyTest,
Boolean>)Expression.Lambda(typeof(Func<MyTest, Boolean>), body, exp).Compile();

            foreach (var r in Enumerable.Where(t,where))
            {
                Console.WriteLine(r.ID+" "+r.Name);
            }
        }
    }
}

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