Level 8 (6,385 points)
-
Re: Crash with error for object 0x608000647bec: Invalid pointer dequeued from free list
Level 8 (6,010 points)
"bec" is the last 3-hex-digit portion of the object address.
The error message indicates a pointer to a block of freed memory doesn't actually point to free memory. (Either the pointer itself has been changed in some way, or the memory it points to has been overwritten in a way that clobbers a consistency check.)
The most likely cause is that the memory is a freed object instance, but your code as an unretained reference to it and has tried to use it like a "live" instance. Or it may just be a block of non-object memory that has been modified after being freed.
That is to say, this is likely a memory management bug in your code.
You can try setting a symbolic breakpoint at "malloc_error_break", but my guess is that this will be long after the real problem, and won't tell you what really went wrong.
-
Re: Crash with error for object 0x608000647bec: Invalid pointer dequeued from free list
Apple Staff (11,655 points)
You can try setting a symbolic breakpoint at "mallocerrorbreak", but my guess is that this will be long after the real problem, and won't tell you what really went wrong.
Indeed.
@Claude31, You should run your program with Zombies to see if that gets you closer to the root cause of the problem. If not, try again with Address Sanitizer.
Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardwarelet myEmail = "eskimo" + "1" + "@apple.com"
-
-
Re: Crash with error for object 0x608000647bec: Invalid pointer dequeued from free list
Level 9 (14,575 points)
Which version Xcode?
What is deployment target iOS version?
-
Re: Crash with error for object 0x608000647bec: Invalid pointer dequeued from free list
Level 8 (6,385 points)
That's OSX 10.11.6 (15G1217).
XCode Version 7.3.1 (7D1014).
Seems to be a problem with threads and or thrown exceptions …
-
Re: Crash with error for object 0x608000647bec: Invalid pointer dequeued from free list
Level 8 (6,385 points)
Seems really linked to the way I handle or not the catch after a try. Definetely comes from my code.
Is there a good, in depth, presentation of try / catch, their propagation, …
-
-