[Haskell-beginners] Segmentation fault

Hollister Herhold hollister at fafoh.com
Sun Apr 28 15:59:33 CEST 2013 

The bug report says XCode 4.1 or higher. Hmm.

Have you tried the 32-bit version of the Haskell Platform?


On Apr 28, 2013, at 3:56 AM, Michael Peternell wrote:

> Hi,
> 
> My XCode version is 4.2 Build 4C199.
> 
> I doubt that it is a hardware issue, because:
> 1) only ghci crashes
> 2) when ghci crashes, it always crashes exactly at the same stage during initialization. (see logs in my previous message)
> 3) it always crashes because of EXC_BAD_ACCESS in function evacuate1
> 4) This time, the GDB says "0x00000001c4db959a in evacuate1 ()". Last time it told me "0x00000001b777859a in evacuate1 ()". The addresses are different, so its not a particular bit in physical memory that is broken. And if my RAM were generally broken, then it would crash always at the same position.
> 
> I'm 99.999% sure that there is a bug in the garbage collection code somewhere, presumably in evacuate1(). Check out the backtrace...
> 
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_INVALID_ADDRESS at address: 0x00000000e327a440
> 0x00000001e326359a in evacuate1 ()
> (gdb) bt
> #0  0x00000001e326359a in evacuate1 ()
> #1  0x00000001e32691b8 in scavenge_block1 ()
> Previous frame inner to this frame (gdb could not unwind past this frame)
> (gdb) 
> 
> 
> Am 28.04.2013 um 08:08 schrieb Kyle Murphy:
> 
>> 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" <hollister at fafoh.com> 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 at MacMichi:~ $ /usr/local/bin/ghci --version
>>> The Glorious Glasgow Haskell Compilation System, version 7.6.3
>>> michael at MacMichi:~ $ /usr/bin/ghci --version
>>> The Glorious Glasgow Haskell Compilation System, version 7.4.2
>>> michael at MacMichi:~ $ ghci --version
>>> The Glorious Glasgow Haskell Compilation System, version 7.4.2
>>> michael at MacMichi:~ $ which ghci
>>> /usr/bin/ghci
>>> 
>>> version 7.6.3 still crashes occasionally:
>>> 
>>> michael at 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 at 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 at 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 at 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 at MacMichi:~ $ rm -rf .ghc
>>>>>>>> michael at 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 at 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 at 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 at 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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>>>>>>> 
>>>>>>> 
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>>>>>> 
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