Instrument使用

 内存泄漏检测

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSMutableArray *arr1 = [NSMutableArray array];
    NSMutableArray *arr2 = [NSMutableArray array];
    [arr1 addObject:arr2];
    [arr2 addObject:arr1];
}

@end

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