/* * Copyright (c) 2014 - present Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ #import #import @interface My_manager : NSObject - (int)my_mehtod; @end @implementation My_manager - (int)m { void (^b)(int a); int z = 3; CGContextRef context = CGBitmapContextCreate(NULL, 0, 0, 8, 0, 0, 0); CGImageRef newImage = CGBitmapContextCreateImage(context); b = ^(int a) { if (newImage) CGImageRelease(newImage); }; b(z); if (context) CGContextRelease(context); return z; } @end