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 
main(int argc,char * argv[])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 
44