nszombie

Xcode Instruments - Zombies - what am I looking for?

帅比萌擦擦* 提交于 2019-12-03 05:56:43
问题 When I run Project/Profile in Xcode and choose " Zombies ", the app runs in the simulator with " NSZombie detection " enabled. But what should I be looking for to tell me that there is a problem? All I see is the Allocation instrument running and the statistics below. Where will it actually show me that a Zombie was detected? 回答1: You will get the leak above the object allocation bar. Check this image; For a reference, check this video 来源: https://stackoverflow.com/questions/12098444/xcode

How to debug EXC_BAD_ACCESS that occurs only on release target for an iPhone app?

丶灬走出姿态 提交于 2019-12-03 05:32:19
I'm developing an iPhone application. I have an EXC_BAD_ACCESS that occurs only in the release target; when I build the debug target the exception does not occur. However, when I set the NSZombieEnabled environment variable to YES , I still get the EXC_BAD_ACCESS with no further information. Is it even possible for NSZombieEnabled to work when executing the release target? I don't see why not, since gdb is running in both cases... Update : here is a printout of the top of the stack: #0 0x33369ebc in objc_msgSend () #1 0x3144f968 in -[EAInputStream _streamEventTrigger] () #2 0x3144fe78 in _

iOS libsystem_c.dylib strdup memory leak NSZombie not working

末鹿安然 提交于 2019-12-03 00:15:48
Please help me track down an iOS memory leak. Thanks! I'm using xCode 4.0.1 and I tried to activate NSZombie to track a memory leak, but it doesn't seems to work as before, with xCode 3.x I can't find out where the memory leak is coming from, as Instruments points this out: Leaked Object -> GeneralBlock-32 Address -> 0x4c8600 Size -> 32 Bytes Responsible Library -> libsystem_c.dylib Responsible Frame/Caller -> strup At this point I don't know If I'm using Instruments with NSZombie the right way with xCode 4, as it doesn't show the NSZombie option when I click "i" for more information, under

How can I demonstrate a zombie object in Swift?

╄→尐↘猪︶ㄣ 提交于 2019-12-02 05:19:22
I've read How to demonstrate memory leak and zombie objects in Xcode Instruments? but that's for objective-c. The steps don't apply. From reading here I've understood zombies are objects which are: deallocated but something pointer is still trying to point to them and send messages to them. not exactly sure how that's different from accessing a deallocated object. I mean in Swift you can do: var person : Person? = Person(name: "John") person = nil print(person!.name) Is person deallocated? Yes! Are we trying to point to it? Yes! So can someone share the most common mistake which leads to

How to set environment variables in iPhone executable using XCode 4?

被刻印的时光 ゝ 提交于 2019-12-01 04:19:15
Since switching to XCode 4, I have been having issues finding how to set environment variables (such a NSZombies) in iPhone executables. In XCode 3, you could right-click on your .app file, select "Get Info" and set environment variables. But it doesn't seem possible to do this in XCode 4. Where is it in the new UI? another way would be if you click on the scheme drop down bar -> edit scheme -> arguments tab and then add NSZombieEnabled in the Environment Variables column and YES in the value column... Basel Please see this answer: How do I set up NSZombieEnabled in Xcode 4? EDIT: You can also

[CFString release]: message sent to deallocated instance

元气小坏坏 提交于 2019-12-01 04:05:39
I've been struggling with a strange problem for two days now. I went through every related question on SO but none solved the issue. I'm working on Xcode5. I'm using ARC and CoreData. On iOS7 (simulator): `[CFString release]: message sent to deallocated instance` Thread 1, Queue : com.apple.main-thread 0 0x03c7d3ba in __kill () 1 0x03c7c4b8 in kill$UNIX2003 () 2 0x0347a921 in ___forwarding___ () 3 0x0347a4ee in _CF_forwarding_prep_0 () 4 0x02b7b002 in -[NSConcreteAttributedString dealloc] () 5 0x02f66692 in objc_object::sidetable_release(bool) () 6 0x02f65e81 in objc_release () 7 0x02f66ce7 in

How to set environment variables in iPhone executable using XCode 4?

萝らか妹 提交于 2019-12-01 01:37:12
问题 Since switching to XCode 4, I have been having issues finding how to set environment variables (such a NSZombies) in iPhone executables. In XCode 3, you could right-click on your .app file, select "Get Info" and set environment variables. But it doesn't seem possible to do this in XCode 4. Where is it in the new UI? 回答1: another way would be if you click on the scheme drop down bar -> edit scheme -> arguments tab and then add NSZombieEnabled in the Environment Variables column and YES in the

[CFString release]: message sent to deallocated instance

天大地大妈咪最大 提交于 2019-12-01 00:53:35
问题 I've been struggling with a strange problem for two days now. I went through every related question on SO but none solved the issue. I'm working on Xcode5. I'm using ARC and CoreData. On iOS7 (simulator): `[CFString release]: message sent to deallocated instance` Thread 1, Queue : com.apple.main-thread 0 0x03c7d3ba in __kill () 1 0x03c7c4b8 in kill$UNIX2003 () 2 0x0347a921 in ___forwarding___ () 3 0x0347a4ee in _CF_forwarding_prep_0 () 4 0x02b7b002 in -[NSConcreteAttributedString dealloc] ()

NSZombieEnabled does not work

痞子三分冷 提交于 2019-11-28 23:23:42
When I set NSZombieEnabled = Yes nothing is written to the console. How can I fix this? Or can you advise me any other tools for an EXC_BAD_ACCESS ? bbum You have a plain old crash. EXC_BAD_ACCESS means that your application has tried to access a memory address that is invalid. While the most typical reason for this in a non-GC'd objective-c application is messaging an object after deallocation, something that Zombie Mode detects, this particular crash can happen any number of other ways (as demonstrated). Since your application is crashing, you should have a backtrace. You need to post that

Enable and Debug Zombie objects in iOS using Xcode 5.1.1

穿精又带淫゛_ 提交于 2019-11-27 15:34:18
I have an iOS(7.1) app which crashes due to EXC_BAD_ACCESS . If I am not wrong, this happens due to the use of an object which is already de-allocated. After a bit of searching, I found out that enabling Zombie objects help to pin point the line of error. As I am using xcode 5.1.1, I have done the following to Enable Zombie Objects . And then, checking the Enable Zombie Objects checkbox, Then I went to Instruments panel, selected Zombies ,clicked Profile and got this, Now the simulator (in the left background), which had a button and a textfield is running blank and also I can't understand