Open Radar

 
Summary:

-[NSPointerArray compact] does not remove NULL entries from the array, contrary to its documented behaviour

Steps to Reproduce:

Compile and run the following:

#import <Foundation/Foundation.h>

int main(int argc, char *argv[]) {
    @autoreleasepool {
        NSPointerArray *pa;
        pa = [NSPointerArray weakObjectsPointerArray];
        [pa addPointer:(void *)@"Hello world"];
        @autoreleasepool {
            for (int i = 0; i < 3; i++) {
                [pa addPointer:(void *)[NSString stringWithFormat:@"String %i", i]];
            }
            NSLog(@"Size: %lu, items: %@", [pa count], [pa allObjects]);
        }
        NSLog(@"Size: %lu, items: %@", [pa count], [pa allObjects]);
        [pa compact];

        // Next line should show the count as 1, actually shows it as 4
        NSLog(@"Size: %lu, items: %@", [pa count], [pa allObjects]);
    }
}

Expected Results:

The last NSLog shows the array's count as 1

Actual Results:

The last NSLog shows the array's count as 4

Regression:

Notes: