crashing in calls to AudioConverter on 10.3.9
crashing in calls to AudioConverter on 10.3.9
- Subject: crashing in calls to AudioConverter on 10.3.9
- From: Christopher Ashworth <email@hidden>
- Date: Wed, 22 Mar 2006 12:27:55 -0500
- Resent-date: Wed, 22 Mar 2006 14:49:18 -0500
- Resent-from: Christopher Ashworth <email@hidden>
- Resent-message-id: <email@hidden>
- Resent-to: email@hidden
Hello,
I have an app that runs on 10.3.9 and above. I am encountering (and
am receiving crash reports) concerning an intermittent crash that so
far only appears to occur on 10.3.9, and not on 10.4+.
The basic context is this: One or more sound files are being loaded
into a buffer and played back. The user is able to "seek" to various
positions in a sound file. (The app may be found at http://
figure53.com if you would like to see the full context.)
I have not yet been able to produce sample code that induces the
crash definitively, but I am able to produce it regularly if I
exercise the code that performs this seeking function.
I included crash log output when I tried to post this to the list
before, but that email was rejected by the list admin, so I am
resending without log output. The basic gist of the logs was that
each crash is occurring somewhere within the AudioConverter*
functions, either in AudioConverterFillComplexBuffer or
AudioConverterReset. The traceback is slightly different on each
crash I've looked at.
I realize this may not be enough information to diagnose the problem,
but my questions are:
1) Is there a reason that anyone would know offhand that would
explain why I'm seeing this only on 10.3.9 so far? (e.g. was there a
bug fix in 10.4+ that may be relevant?) I am particularly curious
about this, because it does seem very suspicious that I am only
seeing the problem on 10.3.9.
2) Does the pattern of these crashes indicate some poor practice I
may be following? For example, I have been careful to place locks
around anything that messes with the relevant buffers, but it is
possible something has slipped my notice.
3) Is there a good way I can produce more helpful debugging information?
Thanks much,
Chris
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