nszombie

NSZombieEnabled does not work

由 大憨熊 提交于 2019-11-27 14:44:32
问题 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 ? 回答1: 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

-[CALayer release]: message sent to deallocated instance

由 夙愿已清 提交于 2019-11-27 03:49:55
问题 I'm having a problem with some code in the loadView: method of one of my view controllers. Essentially I have a view which centres itself in a larger view (on an iPad) and has some labels, buttons and icons which are programmatically loaded into it. The problem occurs when the view controller calls the dealloc method, and tries to release. I get a -[CALayer release]: message sent to deallocated instance error and the application crashes. From reading up about this error, it appears I am over

Debugging over-released objects, problem with NSZombie

由 ╄→гoц情女王★ 提交于 2019-11-27 03:06:33
问题 EDIT : I have found the cause of this crash! bbum pointed out that buffer overflows are a very common cause for this, so I looked at the only buffer type malloc I had: closedList = (AINavigationCell **)malloc(baseCells.count * sizeof(AINavigationCell *)); I was later overwriting data past the array's bounds, which should have been much larger than baseCells.count . Thank you bbum! Question: I have a reproduceable EXC_BAD_ACCESS during NSAutoreleasePool -drain, which seems to indicate that I

Enable and Debug Zombie objects in iOS using Xcode 5.1.1

由 牧云@^-^@ 提交于 2019-11-26 17:13:22
问题 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

What is NSZombie?

由 岁酱吖の 提交于 2019-11-26 11:04:29
I've seen suggestions saying to set NSZombieEnabled to true while debugging. What is NSZombie? Is it a framework? A setting? It's a memory debugging aid. Specifically, when you set NSZombieEnabled then whenever an object reaches retain count 0, rather than being deallocated it morphs itself into an NSZombie instance. Whenever such a zombie receives a message, it logs a warning rather than crashing or behaving in an unpredictable way. As such, you can debug subtle over-release/autorelease problems without advanced tools or painstaking needle in haystack searches. The name is a fairly obvious

How to enable NSZombie in Xcode?

由 爱⌒轻易说出口 提交于 2019-11-26 02:14:47
问题 I have an app that is crashing with no error tracing. I can see part of what is going on if I debug, but can\'t figure out which object is \"zombie-ing\". Does anybody know how to enable NSZombie in Xcode 4? 回答1: Environment variables are now part of the "scheme". To edit the scheme and turn on zombies: In the "Product" menu, select "Edit Scheme". Go to the "Run Foo.app" stage in the left panel, and the "Arguments" tab on the right. Add NSZombieEnabled to the "Environment Variables" section

How do I set up NSZombieEnabled in Xcode 4?

由 安稳与你 提交于 2019-11-25 22:56:25
问题 How do I set up NSZombieEnabled and CFZombieLevel for my executable in Xcode 4? 回答1: In Xcode 4.x press ⌥ ⌘ R (or click Menubar > Product > Scheme > Edit Scheme ) select the "Diagnostics" tab and click "Enable Zombie Objects": This turns released objects into NSZombie instances that print console warnings when used again. This is a debugging aid that increases memory use (no object is really released) but improves error reporting. A typical case is when you over-release an object and you don

How to enable NSZombie in Xcode?

由 隐身守侯 提交于 2019-11-25 21:41:00
问题 I have an app that is crashing with no error tracing. I can see part of what is going on if I debug, but can\'t figure out which object is \"zombie-ing\". Does anybody know how to enable NSZombie in Xcode 4? 回答1: Environment variables are now part of the "scheme". To edit the scheme and turn on zombies: In the "Product" menu, select "Edit Scheme". Go to the "Run Foo.app" stage in the left panel, and the "Arguments" tab on the right. Add NSZombieEnabled to the "Environment Variables" section
订阅 nszombie