SKPhysicsBody bodyWithPolygonFromPath内存泄漏

Question

在创建具有自定义形状的Sprite Kit物理主体时,我有一个奇怪的内存泄漏.这就是我的实现的样子:

CGFloat offsetX = self.frame.size.width * self.anchorPoint.x;
CGFloat offsetY = self.frame.size.height * self.anchorPoint.y;

CGMutablePathRef path = CGPathCreateMutable();
CGPathMoveToPoint(path, NULL, 4 - offsetX, 3 - offsetY);
CGPathAddLineToPoint(path, NULL, 66 - offsetX, 3 - offsetY);
CGPathAddLineToPoint(path, NULL, 35 - offsetX, 57 - offsetY);
CGPathCloseSubpath(path);

self.physicsBody = [SKPhysicsBody bodyWithPolygonFromPath:path];

CGPathRelease(path);

内部SKSpriteNode方法一切都在进行中.在创建这样的实体后,Instruments会告诉我几个内存泄漏:

Leaked object: 
  Malloc 32 Bytes
Size:
  32 Bytes
Responsible Library: 
  PhysicsKit
Responsible Frame:
  std::__1::__split_buffer<PKPoint, std::__1::allocator<PKPoint>&>::__split_buffer(unsigned long, unsigned long, std::__1::allocator<PKPoint>&)

这CGPathRelease(path);条线是必要的 - 没有它我会得到更多的内存泄漏,CGPath这是可以理解的.当我使用此实现时(用于测试目的):

CGFloat radius = MAX(self.frame.size.width, self.frame.size.height) * 0.5f;
self.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:radius];

......一切运行良好,没有内存泄漏.我想知道这是否是Sprite Kit bug或者我做错了什么.

Answer 1

如果您执行以下操作，会有什么变化吗？

CGPathRef pathCopy = CGPathCreateCopy(path);
CGPathRelease(path);
self.physicsBody = [SKPhysicsBody bodyWithPolygonFromPath:pathCopy];
CGPathRelease(pathCopy);