[SOLVED] App crashes on only iPhone 5 when adding GMSMarker to the map: EXC_BAD

App crashes on only iPhone 5 when adding GMSMarker to the map: EXC_BAD_ACCESS

The app I'm working on plots a lot of GMSMarkers on a google map. It works perfectly fine in all other devices, except iPhone 5. I have subclassed GMSMarker and set an object id to the subclass. This is done so that I can add the markers to an NSSet and ensure there are only distinct markers that are plotted and no duplicates. The subclass is:

@implementation BYOMarker
-(BOOL)isEqual:(id)object
{
    BYOMarker *otherMarker = (BYOMarker *)object;
    if (self.objectID.intValue == otherMarker.objectID.intValue) {
        return YES;
    }
    return NO;
}
-(NSUInteger)hash
{
    return  [self.objectID hash];
}
@end

The .h file

#import <GoogleMaps/GoogleMaps.h>

@interface BYOMarker : GMSMarker
@property (assign, nonatomic) NSNumber  *objectID;
@end

The app is crashing at the return of the hash function with an EXC_BAD_ACCESS exception. I enabled Zombie objects and tried to print po marker.objectID when I'm setting the map object for the marker and I get the following error:

*** -[CFNumber respondsToSelector:]: message sent to deallocated instance 0x80416470
0x80416470

Any Help?! TIA

Solution

You have a memory management problem with your objectID property. Don't use assign for object pointer properties. Use strong.

@property (strong, nonatomic) NSNumber *objectID;