iOS: fix crash from overrelease in UIImageToMat#3340
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opencv-pushbot merged 1 commit intoopencv:2.4from Oct 17, 2014
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iOS: fix crash from overrelease in UIImageToMat#3340opencv-pushbot merged 1 commit intoopencv:2.4from
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- previous pull request: opencv#3340
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您好，在iOS9设备上，我发现OpenCV2.4.9的版本，在我使用UIImageToMat次数过多时，会crash。然后我用iOS12的设备测试并没有问题。2.4.9版本的OpenCV是没有UIImageToMat和MatToUIImage实现的。我是把OpenCV3.0以上版本的方法拷贝过来用的。而且我看了#3741的解决方案（适用于3.0），并不能解决iOS9上的crash |
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There is an overrelease occurring in UIImageToMat. This overrelease will randomly cause a crash with the following assertion:
Assertion failed: (!space->is_singleton), function color_space_dealloc, file ColorSpaces/CGColorSpace.c, line 178.
This overrelease is reported by the Xcode analyzer with the following message:
Incorrect decrement of the reference count of an object that is not owned at this point by the caller
The crash tends to occur after a large number of calls to UIImageToMat, around the 20th time it is called in a loop.