> [This note supersedes my previous one.
> The previous version of this note contained junk
> in the transcript at the end that didn't belong.]
>
> I'm trying to play around with GHC's memo function,
> but am encountering segmentation faults whenever
> I try to get a heap profile of a simple program
> that uses memo, as indicated in the following
> transcript:
>
> [fturbak@lefkas test]$ GHCMemoCyclist 2 10
> 01
> [fturbak@lefkas test]$ GHCMemoCyclist 2 100
> 01
> [fturbak@lefkas test]$ GHCMemoCyclist 2 10 +RTS -hC
> 01
> Segmentation fault
> [fturbak@lefkas test]$ GHCMemoCyclist 2 100 +RTS -hC
> Segmentation fault
Thanks for the report, and sorry for the delay in getting back to you.
This is indeed a bug in 4.08.2, which I've fixed in the CVS sources
(both 4.08 branch and the HEAD). Unfortunately there's no workaround,
except to get the latest sources and upgrade the RTS.
> --------------------------------------------------------------
> -----------------
> -- (2) Contents of Makefile
>
> # Note: I am using ghc-4.08 and gcc version 2.95 for these tests.
> HC =
> /home/lumberjacks/deforest/ghc-4.08/fptools-newgcc-build/bin/g
> hc-4.08 -lHSutil_p -lHSlang_p -lHSconcurrent_p
BTW, better to use "-package util -package lang -package concurrent"
than to name the libraries explicitly.
> HC_OPTS = -v -O
> -i.:/home/lumberjacks/deforest/ghc-4.08/fptools-newgcc-build/g
hc/lib/std:/home/lumberjacks/deforest/ghc->
4.08/fptools-newgcc-build/hslibs/util:/home/lumberjacks/defore
> st/ghc-4.08/fptools-newgcc-build/hslibs/concurrent:/home/lumbe
> rjacks/deforest/ghc-4.08/fptools-newgcc-build/hslibs/lang
> -prof -auto-all
If you use the package options, you shouldn't need the explicit -i<path>
flags.
Cheers,
Simon
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