[PD] Troubleshooting suggestions

Mike McGonagle mjmogo at gmail.com
Wed Dec 5 00:16:02 CET 2007

Hello all,
I have a patch that has started to cause a crash in PD. In trying to figure
out exactly what is happening, I reworked the patch, and now each of the
smaller chunks of code are in their own subpatch. So, now the patch doesn't
ALWAYS crash. Now the only time it crashes is when I open the subpatch
containing the offending code, BUT only after that code has been executed at
least once.

Lets see if I can give an outline...

1. Open the patch.
2. Setup the patch for operation.
3. Call the subpatch that appears to be cause trouble. Everything executes
properly and does what it is supposed to do.
4. Open the subpatch that contains the troublesome code, and PD crashes
before it can display the patch.

I have checked this in several different versions of PD, from the nightly
builds (ranging from 1129 back to 0927), as well as the 39 extended version.
And all of them crash in the same way.

This is the first time I have run into something like this, and I am not
sure how to proceed in troubleshooting this problem. I looked at the stack
traces in the logs, and everything appears to be PD code that is executing.

Thread 0 Crashed:
0   pd                             0x0003cbb0 obj_noutlets + 16
1   pd                             0x0000ca0c glist_drawiofor + 76
2   pd                             0x0000d030 text_drawborder + 976
3   pd                             0x0000d3ac text_vis + 156 (g_text.c:1061)
4   pd                             0x0001eca0 gobj_vis + 352 (g_editor.c:91)
5   pd                             0x00003eb0 canvas_map + 128
6   pd                             0x0003b0d4 pd_typedmess + 1092
7   pd                             0x0003b23c pd_typedmess + 1452
8   pd                             0x0003f020 binbuf_eval + 1104
9   pd                             0x00045c70 socketreceiver_read + 640
10  pd                             0x000444dc sys_domicrosleep + 316
11  pd                             0x00042850 m_scheduler + 1248
12  pd                             0x00044240 sys_main + 1440 (s_main.c:311)
13  pd                             0x00002174 _start + 340 (crt.c:272)
14  pd                             0x0000201c start + 60

I am running on a Mac OS X 10.4.11, while not all of the crashes give the
exact same stack trace, this is the most prevalent one.



Peace may sound simple—one beautiful word— but it requires everything we
have, every quality, every strength, every dream, every high ideal.
—Yehudi Menuhin (1916–1999), musician
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