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1#import "ivars-in-blocks.h"2#import <stdio.h>3 4typedef int (^my_block_ptr_type) (int);5 6@interface IAmBlocky()7{8 int _hidden_ivar;9 my_block_ptr_type _block_ptr;10}11 12@end13 14@implementation IAmBlocky15 16+ (int) addend17{18 return 3;19}20 21+ (void) classMethod22{23 int (^my_block)(int) = ^(int foo)24 {25 int ret = foo + [self addend];26 return ret; // Break here inside the class method block.27 };28 printf("%d\n", my_block(2));29}30 31- (void) makeBlockPtr;32{33 _block_ptr = ^(int inval)34 {35 _hidden_ivar += inval;36 return blocky_ivar * inval; // Break here inside the block.37 };38}39 40- (IAmBlocky *) init41{42 blocky_ivar = 10;43 _hidden_ivar = 20;44 // Interesting... Apparently you can't make a block in your init method. This crashes...45 // [self makeBlockPtr];46 return self;47}48 49- (int) callABlock: (int) block_value50{51 if (_block_ptr == NULL)52 [self makeBlockPtr];53 int ret = _block_ptr (block_value);54 [IAmBlocky classMethod];55 return ret;56}57@end58 59