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NSTextView auto_refcount_underflow_error during spell check
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NSTextView auto_refcount_underflow_error during spell check


  • Subject: NSTextView auto_refcount_underflow_error during spell check
  • From: "email@hidden" <email@hidden>
  • Date: Mon, 22 Nov 2010 15:05:51 +0000

I have an NSTextView instance on OS X 10.6.3 that persistently logs the following error
auto_refcount_underflow_error

Breaking on this reveals that the underflow occurs on thread 4 in NSTextCheckingOperation.
I haven't seen this behaviour before with NSTextView so I am pretty certain that a misconfiguration is the cause.

The NSTextView instance is subclassed and is not instantiated from a nib (the codebase began life as Smultron).
Spelling implementation is that of a standard NSTextView and auto spell checking is not activated.

on thread 4

#0	0x96bfe133 in auto_refcount_underflow_error
#1	0x96c0a1ba in Auto::Zone::dec_refcount_small_medium
#2	0x96c0b79d in Auto::Zone::block_decrement_refcount
#3	0x96bf57f7 in auto_zone_release
#4	0x9811ce4f in _CFRelease
#5	0x98139c08 in CFMakeCollectable
#6	0x9768cca0 in -[NSDateCheckingResult initWithRange:date:timeZone:duration:referenceDate:underlyingResult:]
#7	0x95f63e64 in checkDataDetectors
#8	0x95f60168 in NSSpellCheckerCheckString
#9	0x95f87fdc in -[NSTextCheckingOperation main]
#10	0x975002d8 in -[__NSOperationInternal start]
#11	0x974fff65 in ____startOperations_block_invoke_2
#12	0x956871e4 in _dispatch_call_block_and_release
#13	0x956794b2 in _dispatch_worker_thread2
#14	0x95678f41 in _pthread_wqthread
#15	0x95678d86 in start_wqthread

Regards

Jonathan Mitchell

Developer
Mugginsoft LLP
http://www.mugginsoft.com







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