OpenCV 3.3.1 with SURF on iOS will crash.

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I have build the framework for iOS with --contrib. When I use the SURF on iOS, I can run on iOS Simulator success, but failed on Device.

libc++abi.dylib: terminating with uncaught exception of type cvflann::anyimpl::bad_any_cast

If change the scheme to release and run on iOS Simulator will crash at:

FlannBasedMatcher matcher;

Here is my test project. http://oz513xipu.bkt.clouddn.com/IRDe...