Hi all,
Trying to figure why the following test app crashes when a 'testtest' Apple
event is sent to it:
------------------------------------------------------------
# cocoatest.py
from PyObjCTools import AppHelper
from Carbon.AE import AEInstallEventHandler
AEInstallEventHandler('test', 'test', lambda evt, res:0)
AppHelper.runEventLoop()
------------------------------------------------------------
# setup.py
from distutils.core import setup
import py2app
setup(app=['cocoatest.py'], data_files=['MainMenu.nib']) # default IB
application nib
------------------------------------------------------------
-- test.applescript
tell application "cocoatest" to «event testtest»
------------------------------------------------------------
The test app builds and runs fine, but running the test.applescript causes it
to fall over with the following traceback:
------------------------------------------------------------
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000008
Thread 0 Crashed:
0 org.python.python 0x10023684 PyFrame_New + 32
(frameobject.c:540)
1 org.python.python 0x1007aab0 PyEval_EvalCodeEx + 148
(ceval.c:2523)
2 org.python.python 0x10026274 function_call + 344
(funcobject.c:548)
3 org.python.python 0x1000c348 PyObject_Call + 48
(abstract.c:1752)
4 org.python.python 0x1007c26c
PyEval_CallObjectWithKeywords + 256 (ceval.c:3420)
5 _AE.so 0x0024b9d8 _AEDesc_NewBorrowed + 476
6 com.apple.AE 0x914ab960 aeDispatchAppleEvent(AEDesc
const*, AEDesc*, unsigned long, unsigned char*) + 208
7 com.apple.AE 0x914ab7fc
dispatchEventAndSendReply(AEDesc const*, AEDesc*) + 44
8 com.apple.AE 0x914ab654 aeProcessAppleEvent + 284
9 com.apple.HIToolbox 0x93188940 AEProcessAppleEvent + 60
10 com.apple.AppKit 0x93683adc _DPSNextEvent + 856
11 com.apple.AppKit 0x936835c8 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
12 com.apple.AppKit 0x9367fb0c -[NSApplication run] + 472
13 com.apple.AppKit 0x93770618 NSApplicationMain + 452
14 _AppKit.so 0x0040810c init_AppKit + 6484
15 org.python.python 0x1007c5ec call_function + 828
(ceval.c:3547)
16 org.python.python 0x1007a140 PyEval_EvalFrame + 8888
(ceval.c:2163)
17 org.python.python 0x1007b284 PyEval_EvalCodeEx + 2152
(ceval.c:2730)
18 org.python.python 0x1007c8cc fast_function + 356
(ceval.c:3644)
19 org.python.python 0x1007c6c4 call_function + 1044
(ceval.c:3568)
20 org.python.python 0x1007a140 PyEval_EvalFrame + 8888
(ceval.c:2163)
21 org.python.python 0x1007b284 PyEval_EvalCodeEx + 2152
(ceval.c:2730)
22 org.python.python 0x1007e678 PyEval_EvalCode + 48
(ceval.c:484)
23 org.python.python 0x100b2ee0 run_node + 76
(pythonrun.c:1265)
24 org.python.python 0x10070af4 builtin_execfile + 520
(bltinmodule.c:623)
25 org.python.python 0x1007c5ec call_function + 828
(ceval.c:3547)
26 org.python.python 0x1007a140 PyEval_EvalFrame + 8888
(ceval.c:2163)
27 org.python.python 0x1007b284 PyEval_EvalCodeEx + 2152
(ceval.c:2730)
28 org.python.python 0x1007c8cc fast_function + 356
(ceval.c:3644)
29 org.python.python 0x1007c6c4 call_function + 1044
(ceval.c:3568)
30 org.python.python 0x1007a140 PyEval_EvalFrame + 8888
(ceval.c:2163)
31 org.python.python 0x1007b284 PyEval_EvalCodeEx + 2152
(ceval.c:2730)
32 org.python.python 0x1007e678 PyEval_EvalCode + 48
(ceval.c:484)
33 org.python.python 0x100b2ee0 run_node + 76
(pythonrun.c:1265)
34 org.python.python 0x100b266c PyRun_SimpleFileExFlags +
592 (pythonrun.c:863)
35 ...onmac.unspecified.cocoatest 0x00003db0 0x1000 + 11696
36 ...onmac.unspecified.cocoatest 0x00003e50 0x1000 + 11856
37 ...onmac.unspecified.cocoatest 0x00002414 0x1000 + 5140
38 dyld 0x8fe01048 _dyld_start + 60
------------------------------------------------------------
Additional notes: the test app doesn't crash when AppKit.NSAppleEventManager is
used to install the event handler function, nor when CarbonEvt is used instead
of PyObjC.
I'm getting a similar crash in some CarbonX.OSA code within a PyObjC-based app
and reckon identifying what's causing the test app to crash will help me solve
the problem there. Any ideas as to the cause, suggestions where to look, how to
debug it more effectively, etc. would be a big help as I've been stuck on this
for more than a day now and have only just fitted a new laptop case after the
last temper tantrum. :p
Many thanks,
has
--
http://freespace.virgin.net/hamish.sanderson/
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