Re: Buggy change to NSPropertyList.m ?

[Germán Arias]

In fact, all document-based apps crash after some time. For example open
some documents on Ink and wait some seconds, the app crash.


On vie, 2011-02-11 at 00:27 +0100, Philippe Roussel wrote:
> Hi,
> 
> With commit 32031 to NSPropertyList.m (and latest libobjc2) my
> application crashes in weird ways. Reverting to 31997 on that file
> apparently fixes it for me but I have no idea if the bug is in my
> application or in NSPropertyList.
> 
> Here's backtrace with the latest change :
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0xb770eeef in object_getClass (obj=0xb7adce30) at runtime.c:613
> 613                   while ((Nil != isa) && objc_test_class_flag(isa, 
> objc_class_flag_hidden_class))
> (gdb) bt
> #0  0xb770eeef in object_getClass (obj=0xb7adce30) at runtime.c:613
> #1  0xb78d8f12 in OAppend (obj=0x832c5c8, loc=<value optimized out>, lev=1, 
> step=2, x=100, dest=0x82bf448) at NSPropertyList.m:2179
> #2  0xb78d9084 in OAppend (obj=<value optimized out>, loc=<value optimized 
> out>, lev=0, step=2, x=100, dest=0x82bf448) at NSPropertyList.m:2266
> #3  0xb78d944d in +[NSPropertyListSerialization 
> dataWithPropertyList:format:options:error:] (self=0xb7adcbc0, 
> _cmd=0xb7add078, aPropertyList=0x896b258, aFormat=100, anOption=0, 
>     error=0xbfffe3b8) at NSPropertyList.m:2411
> #4  0xb78d355c in +[NSPropertyListSerialization 
> dataFromPropertyList:format:errorDescription:] (self=0xb7adcbc0, 
> _cmd=0xb7afb060, aPropertyList=0x896b258, aFormat=100, 
>     anErrorString=0xbfffe428) at NSPropertyList.m:2377
> #5  0xb793d5e0 in writeDictionary (dict=0x896b258, file=<value optimized 
> out>) at NSUserDefaults.m:157
> #6  0xb793b947 in -[NSUserDefaults synchronize] (self=0x8244090, 
> _cmd=0xb7afb298) at NSUserDefaults.m:1772
> #7  0xb78967a4 in -[NSNotificationCenter _postAndRelease:] (self=0x8176f58, 
> _cmd=0xb7acaa28, notification=0x83a9348) at NSNotificationCenter.m:1161
> #8  0xb7895c4b in -[NSNotificationCenter postNotification:] (self=0x8176f58, 
> _cmd=0xb7adfa70, notification=0x83a9348) at NSNotificationCenter.m:1190
> #9  0xb714163f in ffi_call_SYSV () from /usr/lib/libffi.so.5
> #10 0xb714146f in ffi_call () from /usr/lib/libffi.so.5
> #11 0xb796a6c5 in GSFFIInvokeWithTargetAndImp (inv=0x83b4fb8, 
> anObject=0x8176f58, imp=0xb7895be0 <-[NSNotificationCenter 
> postNotification:]>) at GSFFIInvocation.m:406
> #12 0xb796a88a in -[GSFFIInvocation invokeWithTarget:] (self=0x83b4fb8, 
> _cmd=0xb7ac0eb8, anObject=0x8176f58) at GSFFIInvocation.m:481
> #13 0xb7873643 in -[NSInvocation invoke] (self=0x83b4fb8, _cmd=0xb7aec070) at 
> NSInvocation.m:640
> #14 0xb7914b39 in -[NSTimer fire] (self=0x83c6670, _cmd=0xb7adfae8) at 
> NSTimer.m:242
> #15 0xb78e5a81 in -[NSRunLoop limitDateForMode:] (self=0x83b2038, 
> _cmd=0xb7adfb40, mode=0xb7adfba0) at NSRunLoop.m:983
> #16 0xb78e2375 in -[NSRunLoop runMode:beforeDate:] (self=0x83b2038, 
> _cmd=0xb7fa6120, mode=0xb7adfba0, date=0x83c9cd0) at NSRunLoop.m:1247
> #17 0xb7e52ac9 in -[GSDisplayServer(EventOps) 
> getEventMatchingMask:beforeDate:inMode:dequeue:] (self=0x838c440, 
> _cmd=0xb5364418, mask=4294967295, limit=0x83c9cd0, mode=0xb7adfba0, 
>     flag=1 '\001') at GSDisplayServer.m:1003
> #18 0xb5332b5e in -[XGServer(X11Ops) 
> getEventMatchingMask:beforeDate:inMode:dequeue:] (self=0x838c440, 
> _cmd=0xb7efeeb0, mask=4294967295, limit=0x83c9cd0, mode=0xb7adfba0, 
> 
> Philippe
> 
> 
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