test/BlocksRuntime/nullblockisa.c

   1 //
   2 //                     The LLVM Compiler Infrastructure
   3 //
   4 // This file is distributed under the University of Illinois Open Source
   5 // License. See LICENSE.TXT for details.
   6
   7 //
   8 //  nullblockisa.m
   9 //  testObjects
  10 //
  11 //  Created by Blaine Garst on 9/24/08.
  12 //
  13 // CONFIG rdar://6244520
  14
  15
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <Block_private.h>
  20
  21
  22 void check(void (^b)(void)) {
  23     struct _custom {
  24         struct Block_layout layout;
  25         struct Block_byref *innerp;
  26     } *custom  = (struct _custom *)(void *)(b);
  27     //printf("block is at %p, size is %lx, inner is %p\n", (void *)b, Block_size(b), innerp);
  28     if (custom->innerp->isa != (void *)NULL) {
  29         printf("not a NULL __block isa\n");
  30         exit(1);
  31     }
  32     return;
  33 }
  34
  35 int main(int argc, char *argv[]) {
  36
  37    __block int i;
  38
  39    check(^{ printf("%d\n", ++i); });
  40    printf("%s: success\n", argv[0]);
  41    return 0;
  42 }
  43