在非ARC中重写setget方法为什么一只报错

@interface Boy : NSObject
{
Gun *gun;
}

-(void)setGun:(Gun *)gun;
-(Gun *)gun;

@end

 @implementation Boy

- (void)dealloc
{
    NSLog(@"Boy释放");
    [super dealloc];
}
-(void)setGun:(Gun *)gun
{
    _gun=gun;
}
-(Gun *)gun{

    return _gun;
}

你没有syncrosize啊，和arc没关系

• (void)setGun:(Gun *)gun { if (_gun!= gun) { [_gun release]; gun = [gun retain/copy]; } } 希望能帮到你!

把gun改成_gun

把gun改成_gun