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Today's Topics:
1. Re: Segmentation fault (Hollister Herhold)
2. Re: Segmentation fault (Kyle Murphy)
----------------------------------------------------------------------
Message: 1
Date: Sat, 27 Apr 2013 11:11:19 -0500
From: Hollister Herhold <[email protected]>
Subject: Re: [Haskell-beginners] Segmentation fault
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
The haskell platform installs to /usr/bin and /Library/Haskell. You can run
/usr/bin/uninstall-hs to remove the Haskell Platform. Just running it does
nothing - it will tell you what it's going to do and then you have to feed it
the appropriate option to make it actually do the uninstall.
What's your XCode version?
On Apr 27, 2013, at 9:15 AM, Michael Peternell wrote:
> Hi,
>
> thanks for you help so far!
>
> I have OX X Snow Leopard with all software updates installed (I checked this
> 5min ago). My OSX-Version is 10.6.8 . I have downloaded the 64bit version of
> GHC.
>
> hmm, this is strange: i downloaded ghc-7.6.3 from
> http://www.haskell.org/ghc/download_ghc_7_6_3#macosx_x86_64
> i did "./configure" and "sudo make install", but still it seems that I have
> version 7.4.2. It turns out that one installer installs into /usr/bin and the
> other into /usr/local/bin.
>
> michael@MacMichi:~ $ /usr/local/bin/ghci --version
> The Glorious Glasgow Haskell Compilation System, version 7.6.3
> michael@MacMichi:~ $ /usr/bin/ghci --version
> The Glorious Glasgow Haskell Compilation System, version 7.4.2
> michael@MacMichi:~ $ ghci --version
> The Glorious Glasgow Haskell Compilation System, version 7.4.2
> michael@MacMichi:~ $ which ghci
> /usr/bin/ghci
>
> version 7.6.3 still crashes occasionally:
>
> michael@MacMichi:~ $ /usr/local/bin/ghci
> GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer-gmp ... linking ... done.
> Loading package base ... linking ... done.
> Segmentation fault
>
> Maybe it is really this bug that just needs to be fixed and that won't just
> disappear on its own?
> http://hackage.haskell.org/trac/ghc/ticket/7212
> http://hackage.haskell.org/trac/ghc/ticket/7403
>
> DEBUGGING:
>
> I added an echo line into /usr/local/bin/ghc-7.6.3 so it reads
>
> #!/bin/sh
> exedir="/usr/local/lib/ghc-7.6.3"
> exeprog="ghc-stage2"
> executablename="$exedir/$exeprog"
> datadir="/usr/local/share"
> bindir="/usr/local/bin"
> topdir="/usr/local/lib/ghc-7.6.3"
> executablename="$exedir/ghc"
> echo "$executablename" -B"$topdir" ${1+"$@"}
> exec "$executablename" -B"$topdir" ${1+"$@"}
>
> So I have all the ingredients to start GDB.
>
> +++ BEGIN DEBUG SESSION +++
>
> michael@MacMichi:~ $ /usr/local/bin/ghci
> /usr/local/lib/ghc-7.6.3/ghc -B/usr/local/lib/ghc-7.6.3 --interactive
> GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer-gmp ... linking ... done.
> Loading package base ... linking ... done.
> Segmentation fault
> michael@MacMichi:~ $ gdb
> GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 15 16:03:10 UTC
> 2011)
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "x86_64-apple-darwin".
> (gdb) set args -B/usr/local/lib/ghc-7.6.3 --interactive
> (gdb) show args
> Argument list to give program being debugged when it is started is
> "-B/usr/local/lib/ghc-7.6.3 --interactive".
> (gdb) run
> Starting program: -B/usr/local/lib/ghc-7.6.3 --interactive
> No executable file specified.
> Use the "file" or "exec-file" command.
> (gdb) exec-file /usr/local/lib/ghc-7.6.3/ghc
> Reading symbols for shared libraries .... done
> (gdb) run
> Starting program: /usr/local/lib/ghc-7.6.3/ghc -B/usr/local/lib/ghc-7.6.3
> --interactive
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(darwin64.o)" - no
> debug information available for
> "/var/folders/9z/yntzqjqn1j95xbpb6dr3qbww0000gn/T//ccr2b8iU.s".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(ffi64.o)" - no debug
> information available for "../src/x86/ffi64.c".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(prep_cif.o)" - no
> debug information available for "../src/prep_cif.c".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(types.o)" - no debug
> information available for "../src/types.c".
>
> ..... done
> GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer-gmp ... linking ... done.
> Loading package base ... linking ... done.
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_INVALID_ADDRESS at address: 0x00000000b778f440
> 0x00000001b777859a in evacuate1 ()
> (gdb)
>
> +++ END DEBUG SESSION +++
>
> It doesn't crash every time. If it doesn't crash, I still get some warnings
> in GDB:
>
> +++ BEGIN DEBUG SESSION +++
>
> michael@MacMichi:~ $ gdb
> GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 15 16:03:10 UTC
> 2011)
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "x86_64-apple-darwin".
> (gdb) exec-file /usr/local/lib/ghc-7.6.3/ghc
> Reading symbols for shared libraries .... done
> (gdb) set args -B/usr/local/lib/ghc-7.6.3 --interactive
> (gdb) run
> Starting program: /usr/local/lib/ghc-7.6.3/ghc -B/usr/local/lib/ghc-7.6.3
> --interactive
> Reading symbols for shared libraries . done
> Reading symbols for shared libraries warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(darwin64.o)" - no
> debug information available for
> "/var/folders/9z/yntzqjqn1j95xbpb6dr3qbww0000gn/T//ccr2b8iU.s".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(ffi64.o)" - no debug
> information available for "../src/x86/ffi64.c".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(prep_cif.o)" - no
> debug information available for "../src/prep_cif.c".
>
> warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(types.o)" - no debug
> information available for "../src/types.c".
>
> ..... done
> GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer-gmp ... linking ... done.
> Loading package base ... linking ... done.
> Prelude> takewhile (<200) (let fib a b = a:(fib b (a+b)) in fib 1 1)
>
> <interactive>:2:1:
> Not in scope: `takewhile'
> Perhaps you meant `takeWhile' (imported from Prelude)
> Prelude> takeWhile (<200) (let fib a b = a:(fib b (a+b)) in fib 1 1)
> [1,1,2,3,5,8,13,21,34,55,89,144]
> Prelude>
>
> +++ END DEBUG SESSION +++
>
> Greetings to ian!!
>
> Regards,
> Michael
>
> Am 27.04.2013 um 15:21 schrieb Hollister Herhold:
>
>>
>> Sorry, I wasn't clear - I was thinking OS X 10.8.3. Your uname says 10.8.0,
>> which I now see (after running uname on my 10.7.5 installation, it says
>> darwin 11.4.2) has nothing to do with the version of OS X you're running, so
>> never mind. What version of OS X *are* you running?
>>
>> The Haskell Platform comes with ghc 7.4.2. The newest release version of ghc
>> is actually 7.6.3, and you can find the binary distributions here:
>>
>> http://www.haskell.org/ghc/
>>
>> The Haskell Platform "ships" with an older version that's been "shaken down"
>> a little more than the latest-and-greatest ghc. It also comes with a
>> selection of libraries that have been well-tested. You *can* start with just
>> ghc 7.6.3 and install the libraries yourself, however. I believe the next
>> Haskell Platform release (scheduled for May-ish, I think) will have 7.6.3,
>> but don't quote me on that. Discussions were ongoing last I looked.
>>
>> I'd suggest downloading and installing the binary for ghc 7.6.3 and see if
>> ghci runs on that without crashing.
>>
>> Hope this helps.
>>
>>
>> On Apr 27, 2013, at 7:56 AM, Michael Peternell wrote:
>>
>>> Is there a version 10.8.3?
>>>
>>> I downloaded Haskell from the official website at
>>> http://www.haskell.org/platform/ . I followed the one and only "Download"
>>> link on the homepage. The Wikipedia says that 7.6.2 is the newest version
>>> although I cannot find that version on the haskell website. It's hard for
>>> me to believe that the development version would be 3 major version numbers
>>> ahead, but maybe we are talking about different implementations?
>>>
>>> Where can I find the latest version?
>>>
>>> Regards,
>>> Michael
>>>
>>> Am 27.04.2013 um 14:12 schrieb Hollister Herhold:
>>>
>>>>
>>>> Just a guess, but maybe you could try updating to 10.8.3? I'm pretty sure
>>>> I've seen people on the ghc-devel mailing list running 10.8.3 and things
>>>> work. You could also try downloading the ghc 7.6.2 binary.
>>>>
>>>>
>>>> On Apr 27, 2013, at 5:59 AM, Michael Peternell wrote:
>>>>
>>>>> Hey,
>>>>>
>>>>> i did a little search.
>>>>>
>>>>> it seems like this was already a bug 3 years ago:
>>>>> http://trac.haskell.org/haskeline/ticket/105
>>>>> and it reappeared on a Mac in version 7.4.1 8 months ago
>>>>> http://hackage.haskell.org/trac/ghc/ticket/7212
>>>>> someone has refiled the bug for 7.4.2
>>>>> http://hackage.haskell.org/trac/ghc/ticket/7403
>>>>> the bug is discussed in communities
>>>>> http://forums.gentoo.org/viewtopic-t-844842-start-0.html
>>>>>
>>>>> the 7212 ticket is marked as "wontfix" and the 7403-ticket is marked as
>>>>> "duplicate". i don't wanna file another bug report, there are already
>>>>> enough of them.
>>>>>
>>>>> please, someone fix this bug.
>>>>>
>>>>> Regards,
>>>>> Michael
>>>>>
>>>>> Am 27.04.2013 um 12:42 schrieb Michael Peternell:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> sometimes when I start ghci, I just get a segmentation fault. Sometimes
>>>>>> I get even 15 segmentation faults in a row, and sometimes I can open it
>>>>>> many times and it works each time.
>>>>>>
>>>>>> I downloaded the Haskell Platform for Mac, 64Bit, from
>>>>>> http://www.haskell.org/platform/mac.html
>>>>>> I verified the SHA1-Sum, btw.
>>>>>>
>>>>>> I tried reinstalling the platform, and I tried deleting the ~/.ghc
>>>>>> directory, but nothing works. I didn't do anything fancy with Haskell, I
>>>>>> just downloaded it yesterday and I didn't tamper with any haskell-files
>>>>>> outside of my home-directory. The only kernel extensions I have
>>>>>> installed are the ones from VMWare Fusion and maybe flux. (i'm not sure
>>>>>> if flux involves kernel extensions or how deeply it messes with the OS.)
>>>>>>
>>>>>> michael@MacMichi:~ $ rm -rf .ghc
>>>>>> michael@MacMichi:~ $ ghci
>>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
>>>>>> Loading package ghc-prim ... linking ... done.
>>>>>> Loading package integer-gmp ... linking ... done.
>>>>>> Loading package base ... linking ... done.
>>>>>> Segmentation fault
>>>>>> michael@MacMichi:~ $ uname -a
>>>>>> Darwin MacMichi.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7
>>>>>> 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64
>>>>>>
>>>>>> michael@MacMichi:~ $ ghci
>>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
>>>>>> Loading package ghc-prim ... linking ... done.
>>>>>> Loading package integer-gmp ... linking ... done.
>>>>>> Loading package base ... linking ... done.
>>>>>> Segmentation fault
>>>>>> michael@MacMichi:~ $ ghci
>>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
>>>>>> Loading package ghc-prim ... linking ... done.
>>>>>> Loading package integer-gmp ... linking ... done.
>>>>>> Loading package base ... linking ... done.
>>>>>> Prelude> sum (takeWhile (<10000) (filter odd (map (^2) [1..])))
>>>>>> 166650
>>>>>> Prelude>
>>>>>>
>>>>>> Any insights on what is really going on behind the scenes will be
>>>>>> appreciated.
>>>>>>
>>>>>> Regards,
>>>>>> Michael
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Beginners mailing list
>>>>>> [email protected]
>>>>>> http://www.haskell.org/mailman/listinfo/beginners
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Beginners mailing list
>>>>> [email protected]
>>>>> http://www.haskell.org/mailman/listinfo/beginners
>>>>
>>>>
>>>> _______________________________________________
>>>> Beginners mailing list
>>>> [email protected]
>>>> http://www.haskell.org/mailman/listinfo/beginners
>>>
>>>
>>> _______________________________________________
>>> Beginners mailing list
>>> [email protected]
>>> http://www.haskell.org/mailman/listinfo/beginners
>>
>>
>> _______________________________________________
>> Beginners mailing list
>> [email protected]
>> http://www.haskell.org/mailman/listinfo/beginners
>
>
> _______________________________________________
> Beginners mailing list
> [email protected]
> http://www.haskell.org/mailman/listinfo/beginners
------------------------------
Message: 2
Date: Sun, 28 Apr 2013 02:08:18 -0400
From: Kyle Murphy <[email protected]>
Subject: Re: [Haskell-beginners] Segmentation fault
To: beginners <[email protected]>
Message-ID:
<CA+y6JczLKabnUnqEUWQqLXONkQyTK6=eayrvn+xpr+susew...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Something else to look into is that this sounds like bad ram to me. Have
you run any memory diagnostics and/or checked to see if you're having any
HD issues? Anytime you have intermittent crashes like these I tend to
suspect hardware issues. Do you have another computer with the same OS
version you could try to reproduce the issue on?
On Apr 27, 2013 12:13 PM, "Hollister Herhold" <[email protected]> wrote:
>
> The haskell platform installs to /usr/bin and /Library/Haskell. You can
> run /usr/bin/uninstall-hs to remove the Haskell Platform. Just running it
> does nothing - it will tell you what it's going to do and then you have to
> feed it the appropriate option to make it actually do the uninstall.
>
> What's your XCode version?
>
>
> On Apr 27, 2013, at 9:15 AM, Michael Peternell wrote:
>
> > Hi,
> >
> > thanks for you help so far!
> >
> > I have OX X Snow Leopard with all software updates installed (I checked
> this 5min ago). My OSX-Version is 10.6.8 . I have downloaded the 64bit
> version of GHC.
> >
> > hmm, this is strange: i downloaded ghc-7.6.3 from
> > http://www.haskell.org/ghc/download_ghc_7_6_3#macosx_x86_64
> > i did "./configure" and "sudo make install", but still it seems that I
> have version 7.4.2. It turns out that one installer installs into /usr/bin
> and the other into /usr/local/bin.
> >
> > michael@MacMichi:~ $ /usr/local/bin/ghci --version
> > The Glorious Glasgow Haskell Compilation System, version 7.6.3
> > michael@MacMichi:~ $ /usr/bin/ghci --version
> > The Glorious Glasgow Haskell Compilation System, version 7.4.2
> > michael@MacMichi:~ $ ghci --version
> > The Glorious Glasgow Haskell Compilation System, version 7.4.2
> > michael@MacMichi:~ $ which ghci
> > /usr/bin/ghci
> >
> > version 7.6.3 still crashes occasionally:
> >
> > michael@MacMichi:~ $ /usr/local/bin/ghci
> > GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> > Loading package ghc-prim ... linking ... done.
> > Loading package integer-gmp ... linking ... done.
> > Loading package base ... linking ... done.
> > Segmentation fault
> >
> > Maybe it is really this bug that just needs to be fixed and that won't
> just disappear on its own?
> > http://hackage.haskell.org/trac/ghc/ticket/7212
> > http://hackage.haskell.org/trac/ghc/ticket/7403
> >
> > DEBUGGING:
> >
> > I added an echo line into /usr/local/bin/ghc-7.6.3 so it reads
> >
> > #!/bin/sh
> > exedir="/usr/local/lib/ghc-7.6.3"
> > exeprog="ghc-stage2"
> > executablename="$exedir/$exeprog"
> > datadir="/usr/local/share"
> > bindir="/usr/local/bin"
> > topdir="/usr/local/lib/ghc-7.6.3"
> > executablename="$exedir/ghc"
> > echo "$executablename" -B"$topdir" ${1+"$@"}
> > exec "$executablename" -B"$topdir" ${1+"$@"}
> >
> > So I have all the ingredients to start GDB.
> >
> > +++ BEGIN DEBUG SESSION +++
> >
> > michael@MacMichi:~ $ /usr/local/bin/ghci
> > /usr/local/lib/ghc-7.6.3/ghc -B/usr/local/lib/ghc-7.6.3 --interactive
> > GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> > Loading package ghc-prim ... linking ... done.
> > Loading package integer-gmp ... linking ... done.
> > Loading package base ... linking ... done.
> > Segmentation fault
> > michael@MacMichi:~ $ gdb
> > GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 15 16:03:10
> UTC 2011)
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you
> are
> > welcome to change it and/or distribute copies of it under certain
> conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB. Type "show warranty" for
> details.
> > This GDB was configured as "x86_64-apple-darwin".
> > (gdb) set args -B/usr/local/lib/ghc-7.6.3 --interactive
> > (gdb) show args
> > Argument list to give program being debugged when it is started is
> "-B/usr/local/lib/ghc-7.6.3 --interactive".
> > (gdb) run
> > Starting program: -B/usr/local/lib/ghc-7.6.3 --interactive
> > No executable file specified.
> > Use the "file" or "exec-file" command.
> > (gdb) exec-file /usr/local/lib/ghc-7.6.3/ghc
> > Reading symbols for shared libraries .... done
> > (gdb) run
> > Starting program: /usr/local/lib/ghc-7.6.3/ghc
> -B/usr/local/lib/ghc-7.6.3 --interactive
> > Reading symbols for shared libraries . done
> > Reading symbols for shared libraries warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(darwin64.o)" - no
> debug information available for
> "/var/folders/9z/yntzqjqn1j95xbpb6dr3qbww0000gn/T//ccr2b8iU.s".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(ffi64.o)" - no
> debug information available for "../src/x86/ffi64.c".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(prep_cif.o)" - no
> debug information available for "../src/prep_cif.c".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(types.o)" - no
> debug information available for "../src/types.c".
> >
> > ..... done
> > GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> > Loading package ghc-prim ... linking ... done.
> > Loading package integer-gmp ... linking ... done.
> > Loading package base ... linking ... done.
> >
> > Program received signal EXC_BAD_ACCESS, Could not access memory.
> > Reason: KERN_INVALID_ADDRESS at address: 0x00000000b778f440
> > 0x00000001b777859a in evacuate1 ()
> > (gdb)
> >
> > +++ END DEBUG SESSION +++
> >
> > It doesn't crash every time. If it doesn't crash, I still get some
> warnings in GDB:
> >
> > +++ BEGIN DEBUG SESSION +++
> >
> > michael@MacMichi:~ $ gdb
> > GNU gdb 6.3.50-20050815 (Apple version gdb-1708) (Mon Aug 15 16:03:10
> UTC 2011)
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you
> are
> > welcome to change it and/or distribute copies of it under certain
> conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB. Type "show warranty" for
> details.
> > This GDB was configured as "x86_64-apple-darwin".
> > (gdb) exec-file /usr/local/lib/ghc-7.6.3/ghc
> > Reading symbols for shared libraries .... done
> > (gdb) set args -B/usr/local/lib/ghc-7.6.3 --interactive
> > (gdb) run
> > Starting program: /usr/local/lib/ghc-7.6.3/ghc
> -B/usr/local/lib/ghc-7.6.3 --interactive
> > Reading symbols for shared libraries . done
> > Reading symbols for shared libraries warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(darwin64.o)" - no
> debug information available for
> "/var/folders/9z/yntzqjqn1j95xbpb6dr3qbww0000gn/T//ccr2b8iU.s".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(ffi64.o)" - no
> debug information available for "../src/x86/ffi64.c".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(prep_cif.o)" - no
> debug information available for "../src/prep_cif.c".
> >
> > warning: Could not find object file
> "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(types.o)" - no
> debug information available for "../src/types.c".
> >
> > ..... done
> > GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
> > Loading package ghc-prim ... linking ... done.
> > Loading package integer-gmp ... linking ... done.
> > Loading package base ... linking ... done.
> > Prelude> takewhile (<200) (let fib a b = a:(fib b (a+b)) in fib 1 1)
> >
> > <interactive>:2:1:
> > Not in scope: `takewhile'
> > Perhaps you meant `takeWhile' (imported from Prelude)
> > Prelude> takeWhile (<200) (let fib a b = a:(fib b (a+b)) in fib 1 1)
> > [1,1,2,3,5,8,13,21,34,55,89,144]
> > Prelude>
> >
> > +++ END DEBUG SESSION +++
> >
> > Greetings to ian!!
> >
> > Regards,
> > Michael
> >
> > Am 27.04.2013 um 15:21 schrieb Hollister Herhold:
> >
> >>
> >> Sorry, I wasn't clear - I was thinking OS X 10.8.3. Your uname says
> 10.8.0, which I now see (after running uname on my 10.7.5 installation, it
> says darwin 11.4.2) has nothing to do with the version of OS X you're
> running, so never mind. What version of OS X *are* you running?
> >>
> >> The Haskell Platform comes with ghc 7.4.2. The newest release version
> of ghc is actually 7.6.3, and you can find the binary distributions here:
> >>
> >> http://www.haskell.org/ghc/
> >>
> >> The Haskell Platform "ships" with an older version that's been "shaken
> down" a little more than the latest-and-greatest ghc. It also comes with a
> selection of libraries that have been well-tested. You *can* start with
> just ghc 7.6.3 and install the libraries yourself, however. I believe the
> next Haskell Platform release (scheduled for May-ish, I think) will have
> 7.6.3, but don't quote me on that. Discussions were ongoing last I looked.
> >>
> >> I'd suggest downloading and installing the binary for ghc 7.6.3 and see
> if ghci runs on that without crashing.
> >>
> >> Hope this helps.
> >>
> >>
> >> On Apr 27, 2013, at 7:56 AM, Michael Peternell wrote:
> >>
> >>> Is there a version 10.8.3?
> >>>
> >>> I downloaded Haskell from the official website at
> http://www.haskell.org/platform/ . I followed the one and only "Download"
> link on the homepage. The Wikipedia says that 7.6.2 is the newest version
> although I cannot find that version on the haskell website. It's hard for
> me to believe that the development version would be 3 major version numbers
> ahead, but maybe we are talking about different implementations?
> >>>
> >>> Where can I find the latest version?
> >>>
> >>> Regards,
> >>> Michael
> >>>
> >>> Am 27.04.2013 um 14:12 schrieb Hollister Herhold:
> >>>
> >>>>
> >>>> Just a guess, but maybe you could try updating to 10.8.3? I'm pretty
> sure I've seen people on the ghc-devel mailing list running 10.8.3 and
> things work. You could also try downloading the ghc 7.6.2 binary.
> >>>>
> >>>>
> >>>> On Apr 27, 2013, at 5:59 AM, Michael Peternell wrote:
> >>>>
> >>>>> Hey,
> >>>>>
> >>>>> i did a little search.
> >>>>>
> >>>>> it seems like this was already a bug 3 years ago:
> >>>>> http://trac.haskell.org/haskeline/ticket/105
> >>>>> and it reappeared on a Mac in version 7.4.1 8 months ago
> >>>>> http://hackage.haskell.org/trac/ghc/ticket/7212
> >>>>> someone has refiled the bug for 7.4.2
> >>>>> http://hackage.haskell.org/trac/ghc/ticket/7403
> >>>>> the bug is discussed in communities
> >>>>> http://forums.gentoo.org/viewtopic-t-844842-start-0.html
> >>>>>
> >>>>> the 7212 ticket is marked as "wontfix" and the 7403-ticket is marked
> as "duplicate". i don't wanna file another bug report, there are already
> enough of them.
> >>>>>
> >>>>> please, someone fix this bug.
> >>>>>
> >>>>> Regards,
> >>>>> Michael
> >>>>>
> >>>>> Am 27.04.2013 um 12:42 schrieb Michael Peternell:
> >>>>>
> >>>>>> Hi,
> >>>>>>
> >>>>>> sometimes when I start ghci, I just get a segmentation fault.
> Sometimes I get even 15 segmentation faults in a row, and sometimes I can
> open it many times and it works each time.
> >>>>>>
> >>>>>> I downloaded the Haskell Platform for Mac, 64Bit, from
> >>>>>> http://www.haskell.org/platform/mac.html
> >>>>>> I verified the SHA1-Sum, btw.
> >>>>>>
> >>>>>> I tried reinstalling the platform, and I tried deleting the ~/.ghc
> directory, but nothing works. I didn't do anything fancy with Haskell, I
> just downloaded it yesterday and I didn't tamper with any haskell-files
> outside of my home-directory. The only kernel extensions I have installed
> are the ones from VMWare Fusion and maybe flux. (i'm not sure if flux
> involves kernel extensions or how deeply it messes with the OS.)
> >>>>>>
> >>>>>> michael@MacMichi:~ $ rm -rf .ghc
> >>>>>> michael@MacMichi:~ $ ghci
> >>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
> >>>>>> Loading package ghc-prim ... linking ... done.
> >>>>>> Loading package integer-gmp ... linking ... done.
> >>>>>> Loading package base ... linking ... done.
> >>>>>> Segmentation fault
> >>>>>> michael@MacMichi:~ $ uname -a
> >>>>>> Darwin MacMichi.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun
> 7 16:32:41 PDT 2011; root:xnu-1504.15.3~1/RELEASE_X86_64 x86_64
> >>>>>>
> >>>>>> michael@MacMichi:~ $ ghci
> >>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
> >>>>>> Loading package ghc-prim ... linking ... done.
> >>>>>> Loading package integer-gmp ... linking ... done.
> >>>>>> Loading package base ... linking ... done.
> >>>>>> Segmentation fault
> >>>>>> michael@MacMichi:~ $ ghci
> >>>>>> GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help
> >>>>>> Loading package ghc-prim ... linking ... done.
> >>>>>> Loading package integer-gmp ... linking ... done.
> >>>>>> Loading package base ... linking ... done.
> >>>>>> Prelude> sum (takeWhile (<10000) (filter odd (map (^2) [1..])))
> >>>>>> 166650
> >>>>>> Prelude>
> >>>>>>
> >>>>>> Any insights on what is really going on behind the scenes will be
> appreciated.
> >>>>>>
> >>>>>> Regards,
> >>>>>> Michael
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
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