[Mono-bugs] [Bug 537768] New: Expression.Call with generic parameters fails with "Too much method candidates"

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Wed Sep 9 11:13:43 EDT 2009


           Summary: Expression.Call with generic parameters fails with
                    "Too much method candidates"
    Classification: Mono
           Product: Mono: Class Libraries
           Version: SVN
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Core
        AssignedTo: jbevain at novell.com
        ReportedBy: ck at carlo-kok.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:
Gecko/20090729 Firefox/3.5.2


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Linq.Expressions;

namespace ConsoleApplication65
    class Program
        static void Main(string[] args)
            Type elementType = typeof(string);
            IEnumerable<String> x = new List<string>();
            Expression p = Expression.Constant(x, typeof(IEnumerable<String>));
            Expression.Call(typeof(Queryable), "AsQueryable", new Type[]
{elementType}, p);

works on .NET 3.5; fails on mono; There is only 1 overload with a
generic parameter for AsQueryable; although p will fit in both.

Reproducible: Always

Steps to Reproduce:
1. Compile
2. Run
3. Look at the results
Actual Results:  
Unhandled Exception: System.InvalidOperationException: Too much method
  at System.Linq.Expressions.Expression.TryGetMethod (System.Type type,
tring methodName, BindingFlags flags, System.Type[] parameterTypes,
] argumentTypes) [0x00000]
  at System.Linq.Expressions.Expression.Call (System.Type type, System.String
thodName, System.Type[] typeArguments, System.Linq.Expressions.Expression[]
ments) [0x00000]
  at ConsoleApplication65.Program.Main (System.String[] args) [0x00000]

Expected Results:  

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