Open Radar

 
Summary:
Using ImageIO and CoreGraphics, getting the properties of a particular image will crash 100% of the time

Steps to Reproduce:
1) Run Sample project

Expected Results:
No crash, image is shown and image properties are logged

Actual Results:
Crash when getting the image properties

Here's the code outside of the project:

static UIImage *LoadImageFromData(NSData *data, BOOL logImageProperties)
{
    NSDictionary *options = @{ (NSString *)kCGImageSourceShouldCache : @NO };
    CGImageSourceRef imageSourceRef = CGImageSourceCreateIncremental((__bridge CFDictionaryRef)options);
    CGImageSourceUpdateData(imageSourceRef, (__bridge CFDataRef)data, NO);
    if (logImageProperties) {
        // This crashes 100% of the time with the given image resource
        NSDictionary *imageProperties = CFBridgingRelease(CGImageSourceCopyPropertiesAtIndex(imageSourceRef, 0, NULL));
        NSLog(@"%@", imageProperties);
    }
    CGImageRef cgImage = CGImageSourceCreateImageAtIndex(imageSourceRef, 0, NULL);
    UIImage *image = (cgImage) ? [UIImage imageWithCGImage:cgImage scale:[UIScreen mainScreen].scale orientation:UIImageOrientationUp] : nil;
    CFRelease(cgImage);
    CFRelease(imageSourceRef);
    return image;
}

Here's the image URL:
https://pbs.twimg.com/profile_images/1205320369/logo_only_final_reasonably_small.jpg