如何解决我的应用程序泄漏时使用Qt 4.5？ [英] How do I fix my application from leaking when using Qt 4.5?

问题描述

没有对我的代码的任何更改，除非构建对Qt 4.5我在运行我的应用程序时收到以下警告消息：

Without any changes to my code except building against Qt 4.5 I get the following warning message when I run my application:

*** _NSAutoreleaseNoPool(): Object 0x50a1b0 of class NSCFNumber autoreleased with
no pool in place - just leaking

$ b b

我没有在我的代码中使用任何Objective-C，但Qt 4.5使用一个新的基于Cocoa的后端而不是Carbon。

I am not using any Objective-C in my code but Qt 4.5 is using a new Cocoa based back end instead of Carbon.

我不知道以解决此错误消息。任何人都有线索？

I am not sure how to address and fix this error message. Anyone have a clue?

推荐答案

一般来说，当你的代码看到这个问题时， c $ c> NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; 之前和 [pool release]; 之后。你可以在 _NSAutoreleaseNoPool 函数上设置一个断点，只需查找堆栈爬行就可以看到有问题的代码。请记住， -autorelease 在Cocoa中随处可见，因此它可能不是对触发它的Qt代码中的autorelease的特定调用。

Generally, when you see this problem in your code, you bracket the offending code block with NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init]; before and [pool release]; after. You can set a breakpoint on the _NSAutoreleaseNoPool function and just look up the stack crawl to see what the offending code is. Keep in mind that -autorelease is used everywhere in Cocoa, so it might not be a specific call to autorelease in Qt's code that's triggering it.

然而，因为这是Qt的代码，这样做，并且，最后我检查，Qt / Cocoa仍然是一个进展中的工作，你应该可能只提交一个错误报告与错误和堆栈抓取他们，并等待他们解决它。

However, since this is Qt's code that's doing this, and, last I checked, Qt/Cocoa was still very much a work in progress, you should probably just submit a bug report with the error and a stack crawl to them, and wait for them to fix it.

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