According to a message from GHCi, version 6.4.1 (see below; bug also reproduceable with 6.4.2, though not shown here since it consistently resulted in a core dump without prior message) under Windows XP (fully updated per 2006-07-15), I am herewith reporting what appears to be a bug in GHC. Please see transcript below; the source file in question is included as an attachment. (Lacking both efficient Haskell programming skills and an understanding of the internals of GHC I have refrained from attempting to isolate the bug by reducing the code.) Should there be a simple work-around or something unsafe in my code (though I wouldn't know what: no "unsafe" operations are used; no polymorphism is present), I would greatly appreciate hearing about it.
Sincerely, Fritz :load "c:/henglein/Software/haskell/Basic.hs" ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.4.1, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base-1.0 ... linking ... done. Prelude> Compiling BasicDiscrimination ( c:/henglein/Software/haskell/Basic.hs, interpreted ) Ok, modules loaded: BasicDiscrimination. *BasicDiscrimination> d <- mkDiscriminator Loading package haskell98-1.0 ... linking ... done. *BasicDiscrimination> res <- d [(5, "kdjfkd"), (8, "kjdkfjd")] <interactive>: internal error: EVACUATED object entered! Please report this as a bug to glasgow-haskell-bugs@haskell.org, or http://www.sourceforge.net/projects/ghc/ -- Fritz Henglein, Ph.D. Professor mso Dept. of Computer Science, University of Copenhagen (DIKU) Universitetsparken 1 DK-2100 Copenhagen Denmark Email: [EMAIL PROTECTED] Tel.: +45-35321463 (office), +45-41414158 (cell) Skype: henglein
Basic.hs
Description: Binary data
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