[Haskell-cafe] Threadscope 0.2.2 goes in segmentation fault on Mac Os X 10.8.3

Alfredo Di Napoli alfredo.dinapoli at gmail.com
Sun Mar 31 16:38:54 CEST 2013


Fair enough :)
Here is the gdb output:

(gdb) run
Starting program: /Users/adinapoli/Library/Haskell/ghc-7.6.2/bin/threadscope
Reading symbols for shared libraries
++++++++++++++++++.......................................................................................................................................................................
done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
0x0000000000000000 in ?? ()

I have two hypothesis:

a) could be the RAM (tips about some RAM testing tool?)
b) could be some programs which is writing in that portion of memory, see:

https://discussions.apple.com/thread/3734077?start=0&tstart=0


On 30 March 2013 15:19, John Wiegley <johnw at fpcomplete.com> wrote:

> >>>>> Alfredo Di Napoli <alfredo.dinapoli at gmail.com> writes:
>
> > I know it's a bit difficult to debug this way, I can try debugging with
> gdb
> > if it can help.
>
> Yes, can you show us a backtrace from gdb, and also look in your
> CrashReports
> log folder to see if it gives a bit more information on the state of the
> process at the time it died?
>
> Thanks,
> --
> John Wiegley
> FP Complete                         Haskell tools, training and consulting
> http://fpcomplete.com               johnw on #haskell/irc.freenode.net
>
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