// // nullblockisa.m // testObjects // // Created by Blaine Garst on 9/24/08. // Copyright 2008 __MyCompanyName__. All rights reserved. // // CONFIG rdar://6244520 #include <stdio.h> #include <stdlib.h> #include <Block_private.h> void check(void (^b)(void)) { struct Block_byref *innerp; innerp = (struct Block_byref *)(((long)(void *)b) + (Block_size(b))); //printf("block is at %p, size is %lx, inner is %p\n", (void *)b, Block_size(b), innerp); if (innerp->isa != (void *)NULL) { printf("not a NULL __block isa\n"); exit(1); } return; } int main(int argc, char *argv[]) { __block int i; check(^{ printf("%d\n", ++i); }); printf("%s: success\n", argv[0]); return 0; }