#import <UIKit/UIKit.h>#import <dlfcn.h>static void (*block_func)(void);dispatch_block_t block = ^(){printf("Hello, World!"); };void test(){ printf("test invoked"); }int main(int argc, char *argv[]) {for (NSInteger i = -2000; i < 2000; i++) {block_func = dlsym(i, "test"); if (block_func) { printf("%ld", (long)i); block_func(); }block_func = dlsym(i, "main_block_invoke"); if (block_func) { printf("%ld", (long)i); block_func(); } } }
