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Created attachment 6014 [details]
Test case "bug.fs" mentioned in the description.
Running mono with vs. without the --llvm switch on produces different results for the one-line f# program
printfn "%b" (["A"] = ["A"])
(attached, bug.fs). To wit:
> fsharpc bug.fs
F# Compiler for F# 3.0 (Open Source Edition)
Freely distributed under the Apache 2.0 Open Source License
> mono --llvm bug.exe
> mono bug.exe
> mono --version
Mono JIT compiler version 3.2.6 ((no/9b58377 Thu Jan 16 17:49:56 EST 2014)
Copyright (C) 2002-2012 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
I can reproduce this with 3.2.6, but not with mono master.
The fix will be part of mono 3.2.7.