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Problem using quotations in fsi
f#compiler

I've been tinkering with F# on OS X/Mono and cannot get quotations to work for the life of me. Attempting a simple example yields the following:

MSR F# Interactive, (c) Microsoft Corporation, All Rights Reserved
F# Version 1.9.3.14, compiling for .NET Framework Version v2.0.50727

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> #light;;
> open Microsoft.FSharp.Quotations;;
> open Microsoft.FSharp.Quotations.Raw;;
> open Microsoft.FSharp.Quotations.Typed;;
> <@ 1 + 2 @>;;
System.ArgumentException: Field not large enough to fill array
Parameter name: field_handle
  at (wrapper managed-to-native) System.Runtime.CompilerServices.RuntimeHelpers:InitializeArray (System.Array,intptr)
  at System.Runtime.CompilerServices.RuntimeHelpers.InitializeArray (System.Array array, RuntimeFieldHandle fldHandle) [0x00000] 
  at <StartupCode$FSI_0005>.FSI_0005._main () [0x00000] 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (object,object[])
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] 
stopped due to error

My Mono information:

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Mono JIT compiler version 1.2.6 (tarball)
Copyright (C) 2002-2007 Novell, Inc and Contributors. www.mono-project.com
    TLS:           normal
    GC:            Included Boehm (with typed GC)
    SIGSEGV:       normal
    Notification:  Thread + polling
    Architecture:  x86
    Disabled:      none

I have the same exact problem if I try to evaluate <@@ 1 + 2 @@> using fsi as well.

Is this a problem with me, Mono, OS X, fsi, or ? I can successfully compile and run the following:

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#light 

open System 
open Microsoft.FSharp.Quotations
open Microsoft.FSharp.Quotations.Raw
open Microsoft.FSharp.Quotations.Typed

let main() = 
   let foo = <@@ 1 + 2 @@>
   printfn "%A" foo

main()

Any assistance or insight would be appreciated.

Thanks,
Chris

.

I'm guessing it's a mono problem, I've tested the code in the 1.9.3.7 console that I have installed on my winnxp machine here at work and everything seems okay.

Cheers,
Rob

By on 3/27/2008 1:30 AM ()

I was afraid of that.

It looks like I'll have to abandon Mono (for now) for any serious F# exploration. Time to buy a copy of Windows and fire it up under Parallels.

Thanks for the speedy reply.

By on 3/27/2008 9:52 PM ()

Are you running F# (fsi) under .NET 1.0 or 2.0?

Check the following thread:

[link:cs.hubfs.net]

James

By on 3/28/2008 10:05 AM ()

.NET 2.0

Thanks for the reference - I've been down that path already - before I had everything pointing to .NET 2.0 many other items were broken for me (more on my saga here).

By on 3/28/2008 8:50 PM ()

Quick update: I put a freshly installed F# 1.9.3.14 (setup for .NET 2.0) and updated Mono 1.9 into place - just to try that route one more time - and have the same error with fsi (and as before fsc works just fine).

Mono details:

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Mono JIT compiler version 1.9 (tarball)
Copyright (C) 2002-2007 Novell, Inc and Contributors. www.mono-project.com
    TLS:           normal
    GC:            Included Boehm (with typed GC)
    SIGSEGV:       normal
    Notification:  Thread + polling
    Architecture:  x86
    Disabled:      none

If I come across any more findings I will post them here.

By on 3/31/2008 10:52 PM ()

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