EXC_BAD_ACCESS when running JazzHandsDemo on arm64 about jazzhands

[neoplastic]

Yup, I'm observing the same using an iPad Air, the iPhone 5 works fine.

I think its the variadic dereferencing which is causing the problem. Since its on the 64-bit architecture, it seems that its reading the wrong part of memory... Course I'm not sure on this but evidence points to it.

Anyway, if you want the project working you can substitute:

    [wordmarkFrameAnimation addKeyFrames:[IFTTTAnimationKeyFrame keyFramesWithTimesAndFrames:
            // number of keyframes to add
            4,

            // move 200 pixels to the right for parallax effect
            timeForPage(1), CGRectOffset(self.wordmark.frame, 200, 0),

            // move to initial frame on page 2 for parallax effect
            timeForPage(2), self.wordmark.frame,

            // move down and to the right between pages 2 and 3
            timeForPage(3), CGRectOffset(self.wordmark.frame, self.view.frame.size.width, dy),

            // move back to initial position on page 4 for parallax effect
            timeForPage(4), CGRectOffset(self.wordmark.frame, 0, dy)
    ]];

with:

#import "IFTTTAnimationKeyFrame.h";

...
...

NSArray *arrayOfKeyFrames = @[
                                  [IFTTTAnimationKeyFrame keyFrameWithTime: timeForPage(1)
                                                                  andFrame: CGRectOffset(self.wordmark.frame, 200, 0)],
                                  [IFTTTAnimationKeyFrame keyFrameWithTime:timeForPage(2) andFrame:self.wordmark.frame],
                                  [IFTTTAnimationKeyFrame keyFrameWithTime:timeForPage(3) andFrame:CGRectOffset(self.wordmark.frame, self.view.frame.size.width, dy)],
                                  [IFTTTAnimationKeyFrame keyFrameWithTime:timeForPage(4) andFrame:CGRectOffset(self.wordmark.frame, 0, dy)]
                                  ];
    [wordmarkFrameAnimation addKeyFrames:arrayOfKeyFrames];

Effectively we're just making the keyFramesWithTimesAndFrames: method more verbose in our class.

[JonCox]

Hi, I'm finding the exact same issue on an iPhone 5s - but, like @tomhut, not on any of the simulators.

@neoplastic's fix fixed it though, thank you.

(Just for reference, this was on the master branch, commit 9c77461.)

[jhersh]

Thanks all for the heads up here. There's definitely something funny going on with arm64.

I've updated the demo app to no longer use variadics and it's running fine on my 5s.