Problem running on MAC: Comparer Exception

Tried this same thing on Windows as well. Same error.

Could this be related to the version of Mono?

Dear Jason,

Unfortunately I do not have a Mac, nor was I in a position to test C#Prolog with the Unity engine. I vaguely remember something similar from a number of years ago. In that case, the solution was to add a second argument with a value ‘null’ to the BinarySearch call (search for “null req'd for MONO?” in the source). I would be happy to hear if that helps in this case.

Kind regards,

John Pool

Van: Jason RT Bond [mailto:jrtb@users.sf.net]
Verzonden: Tuesday, September 22, 2015 21:11
Aan: [cs-prolog:support-requests]
Onderwerp: [cs-prolog:support-requests] #1 Problem running on MAC: Comparer Exception

I'm also encountering this problem in version 3.2. In my case, I compiled the .dll in MonoDevelop and I'm trying to use it within the Unity game engine via a C# script. It throws a nearly-identical error on trying to instantiate PrologEngine.

MacOS 10.10.5
Mono version: custom Unity engine implementation (Unity 5.1 — roughly Mono 2.x)

[support-requests:#1] http://sourceforge.net/p/cs-prolog/support-requests/1/ Problem running on MAC: Comparer Exception

Status: open
Group: v1.0_(example)
Created: Tue Jan 08, 2013 11:08 AM UTC by Tomas Trescak
Last Updated: Thu Jan 10, 2013 07:45 AM UTC
Owner: nobody

When trying to run on MAC with latest Mono installed the program compiles fine but it throws following exception on startup:

System.ArgumentException: Comparer threw an exception.
at System.Collections.ArrayList.BinarySearch (System.Object value) [0x0001a] in /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Collections/ArrayList.cs:3092
at Prolog.Engine+BaseParser1+BaseTrie[Prolog.Engine+OpDescrTriplet].AddToIndices (Prolog.TerminalDescr td) [0x00000] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/PG/BaseParser.cs:1018 at Prolog.Engine+BaseParser1+BaseTrie[Prolog.Engine+OpDescrTriplet].Add (System.String key, Int32 iVal, Prolog.OpDescrTriplet payload, Int32 type) [0x0019b] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/PG/BaseParser.cs:1003
at Prolog.Engine+BaseParser1+BaseTrie[Prolog.Engine+OpDescrTriplet].Add (Int32 iVal, Int32 type, System.String name, System.String[] images) [0x00020] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/PG/BaseParser.cs:940 at Prolog.Engine+BaseParser1+BaseTrie[Prolog.Engine+OpDescrTriplet].Add (Int32 iVal, System.String name, System.String[] images) [0x00000] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/PG/BaseParser.cs:932
at Prolog.Engine+PrologParser.FillTerminalTable (Prolog.BaseTrie terminalTable) [0x0002c] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/PG/PL.cs:117
at Prolog.Engine.Initialize () [0x000cc] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/Engine.cs:590
at Prolog.Engine.Reset () [0x00000] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/Engine.cs:560
at Prolog.Engine..ctor (Prolog.BasicIo io) [0x0002e] in /Users/tomi/Downloads/C#Prolog 3.1/CSProlog/Engine.cs:536
at Prolog.MainForm..ctor () [0x0007f] in /Users/tomi/Downloads/C#Prolog 3.1/PLw/MainForm.cs:225
at (wrapper remoting-invoke-with-check) Prolog.MainForm:.ctor ()
at Prolog.Program.Main (System.String[] args) [0x00048] in /Users/tomi/Downloads/C#Prolog 3.1/PLw/Program.cs:35

Seems like there is a problem with binary search.

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