problem with GHC installaion on x86_64

Simon Peyton-Jones simonpj at
Thu Jan 10 04:18:39 EST 2008

This is a fixed bug
However I hadn't realised that it's in 6.8.2; I thought we'd fixed it prior to the 6.8.2 release.

The workaround is simple: do a "make clean".  (That's why our tests didn't pick it up; they all start from clean.)


From: glasgow-haskell-users-bounces at [mailto:glasgow-haskell-users-bounces at] On Behalf Of Yu Di
Sent: 09 January 2008 21:47
To: Bryan O'Sullivan
Cc: glasgow-haskell-users at
Subject: Re: problem with GHC installaion on x86_64

Hi, I found that the x86_64 binary package for version 6.4.1 can be installed successfully on my machine (the x86_64 builds for higher versions either require or have problems with timer_create), and then I tried to use that to compile 6.8.2 from source, but I got the following problem:

make[2]: Entering directory `.../ghc-6.8.2/libraries/base'
../../compiler/stage1/ghc-inplace -package-name base- -hide-all-packages -split-objs -i -idist/build/autogen -idist/build -i. -Idist/build -Iinclude -#include "HsBase.h" -odir dist/build -hidir dist/build -stubdir dist/build -package rts-1.0 -O -fglasgow-exts -package-name base -XCPP -idist/build  -H16m -O -O -Rghc-timing -fgenerics -c Control/Concurrent.hs -o dist/build/Control/Concurrent.o  -ohi dist/build/Control/Concurrent.hi
ghc-6.8.2: panic! (the 'impossible' happened)
  (GHC version 6.8.2 for x86_64-unknown-linux):
        lookupVers1 base:GHC.Prim sym{tc}

Please report this as a GHC bug:

<<ghc: 107290456 bytes, 19 GCs, 3592250/7424504 avg/max bytes residency (3 samples), 20M in use, 0.00 INIT (0.00 elapsed), 0.17 MUT (0.23 elapsed), 0.06 GC (0.07 elapsed) :ghc>>

What is this problem? (I can use 6.4.1 but my programs were last developed with 6.8.1 and contains some function calls that are added later, so I would prefer to use 6.8.1 and above) Thanks,

Di, Yu

----- Original Message ----
From: Bryan O'Sullivan <bos at>
To: Yu Di <diyu60607 at>
Cc: glasgow-haskell-users at
Sent: Tuesday, January 8, 2008 10:07:16 PM
Subject: Re: problem with GHC installaion on x86_64

Yu Di wrote:
> Hi, I am trying to use ghc on a 64-bit machine (uname -a shows: Linux
> ... 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007 x86_64 x86_64
> x86_64 GNU/Linux),

Since you're using RHEL4, you could try grabbing a GHC source RPM for
Fedora and building that.  It might take a bit of tweaking, but probably
very little.  (For instructions on building binary RPMs from source,
Google around.)


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