[Mono-bugs] [Bug 536637] New: Expression.Call() can't find Queryable.Select()

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http://bugzilla.novell.com/show_bug.cgi?id=536637


           Summary: Expression.Call() can't find Queryable.Select()
    Classification: Mono
           Product: Mono: Class Libraries
           Version: unspecified
          Platform: x86-64
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Core
        AssignedTo: jbevain at novell.com
        ReportedBy: jpryor at novell.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


System.Linq.Expressions.Expression.Call() can't find
System.Linq.Queryable.Select().

To reproduce, compile and run the following code:

  using System;
  using System.Linq;
  using System.Linq.Expressions;

  class Test {
    public static void Main ()
    {
      var param = Expression.Parameter(typeof(string), "s");
      var sel = Expression.Property(param, 
          typeof(string).GetProperty("Length"));
      var pred = Expression.Lambda(sel, param);
      var strs = new string[]{"1", "22", "333"};
      var expr = Expression.Call (typeof (Queryable), 
        "Select", 
        new Type[]{ typeof (string), typeof (int)}, 
        Expression.Constant (strs.AsQueryable ()), 
        pred);
      var q = strs.AsQueryable ().Provider.CreateQuery<int> (expr);
      var list = q.ToList();
      Console.WriteLine("List.Count={0}", list.Count);
      // prints: 1, 2, 3
      foreach (var v in list)
        Console.WriteLine (v);
      Console.WriteLine("Done");
    }
  }

Expected results: 

  List.Count=3
  1
  2
  3
  Done

The above is what .NET 3.5 produces.

Actual results:

Unhandled Exception: System.InvalidOperationException: No such method
  at System.Linq.Expressions.Expression.TryGetMethod (System.Type type,
System.String methodName, BindingFlags flags, System.Type[] parameterTypes,
System.Type[] argumentTypes) [0x00000] 
  at System.Linq.Expressions.Expression.Call (System.Type type, System.String
methodName, System.Type[] typeArguments, System.Linq.Expressions.Expression[]
arguments) [0x00000] 
  at Test.Main () [0x00000]

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