Hi Joerg,
This problem is almost certainly bug #751.
This gives a compiler crash if the threaded run time system
is used. The latest darwinports ghc (which I maintain) builds
the run time without threads. What is the output of
sudo port info ghc
?
If you do not have revision 2 of the 6.4.2 portfile, you need to
update:
sudo port selfupdate
If you are running the latest version, your experiences
are... interesting.
Best Wishes,
Greg
On Jul 17, 2006, at 5:36 AM, Joerg van den Hoff wrote:
hi,
my very first tries with ghc, using the 'program'
module Fact where
fact :: Integer -> Integer
fact n = product [1..n]
gave the following compiler crash under MacOS X 10.4.7 (ghc
installed from source via DarwinPorts):
Compiling Fact ( fact.hs, interpreted )
ghc-6.4.2: internal error: scavenge_stack: weird activation record
found on stack: 463
Please report this as a compiler bug. See:
http://www.haskell.org/ghc/reportabug
more irritating, this error was _not_ reproducible. a second try
did run through:
`ghc -c fact.hs' yielded a file `fact.o'
but `ghc -o fact fact.o' yielded:
/usr/bin/ld: Undefined symbols:
_ZCMain_main_closure
___stginit_ZCMain
collect2: ld returned 1 exit status
and `ghc -v --make fact' yielded
Glasgow Haskell Compiler, Version 6.4.2, for Haskell 98, compiled
by GHC version 6.4.2
Using package config file: /opt/local/lib/ghc-6.4.2/package.conf
Using package config file: /Users/vdh/.ghc/powerpc-darwin-6.4.2/
package.conf
Hsc static flags: -static
*** Chasing dependencies:
Chasing modules from: fact
Stable modules:
*** Compiling Fact ( fact.hs, fact.o ):
compile: input file fact.hs
*** Checking old interface for Fact:
Skipping Fact ( fact.hs, fact.o )
*** Deleting temp files
Deleting: /tmp/ghc18926.s
Warning: deleting non-existent /tmp/ghc18926.s
Upsweep completely successful.
*** Deleting temp files
Deleting:
link(batch): upsweep (partially) failed OR
Main.main not exported; not linking.
*** Deleting temp files
Deleting:
what I got where two files `fact.o' and `fact.hi' (attached).
hope this helps in one way or the other
all the best
joerg van den hoff
<fact.o>
module Fact where
fact :: Integer -> Integer
fact n = product [1..n]
<fact.hi>
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