Hi Istvan,

Thanks for taking the time to reply,

On 6/13/06, Istvan Varga <istvan_v@fibermail.hu> wrote:
> For example, does the crash occur predictably, or only sometimes ?

It only seems to happen sometimes, apparently when sending several
program change messages in a short period of time.

> Does
> reading all sound files trigger the crash, or is it specific to some of
> the files ?

It seems to do it with all the files I tested (6 sets of 4 files each)
but I would almost think it's due to the slowness of the processor on
that one - it has a 1GHz PPC processor; anyway I have to really TRY to
get it to crash by sending a lot of program change messages.

Could it be that since the program change messages trigger a
calculation for offset into the soundfile that the resolution between
seconds and samples causes this error ? I'm not sure what causes it
but I can't always get the files to do it. It seems like it could also
be that it hasn't allocated the soundfile and before the system can
allocate the file itself into RAM it tries to skip to whatever index
but it doesn't know how far to skip (hasn't read number of samples
from the header of the audio file)

> Do other opcodes also crash, or only diskin2 ?
>

It seems like only diskin2 it could be any of the UDO's, instrs or
outvalue/GUI elements though I'm not sure ...

The stack trace was from running Csound5 in a commandline by the way,
although I was getting similar results in MacCsound.



-David

> On Tuesday 13 June 2006 18:12, David Akbari wrote:
>
> > I'm getting these weird segmentation faults here's the stack trace
> >
> > Exception:  EXC_BAD_ACCESS (0x0001)
> > Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x007db990
> >
> > Thread 0 Crashed:
> > 0   libsndfile.1.dylib                0x00316238 sf_seek + 0x48
> > (sndfile.c:1141)
> > 1   csound                            0x00055858 diskin2_read_buffer +
> > 0xa0
> > 2   csound                            0x00055694 diskin2_get_sample + 0x74
> > 3   csound                            0x00054784 diskin2_perf + 0x48c
> > 4   csound                            0x000055b8 kperf + 0x10c
> > 5   csound                            0x000036e0 csoundPerform + 0x70
> > 6   csound                            0x000020a0 main + 0x20c
> > 7   csound                            0x00001bc4 _start + 0x188
> > (crt.c:267)
> > 8   csound                            0x00001a38 start + 0x30
> >
> > csound code here http://www.csounds.com/akbari/segfault.txt
> >
> > any help appreciated !


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