1 //
2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3 // See https://llvm.org/LICENSE.txt for license information.
4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5 
6 /*
7  *  objectassign.c
8  *  testObjects
9  *
10  *  Created by Blaine Garst on 10/28/08.
11  *
12  * This just tests that the compiler is issuing the proper helper routines
13  * CONFIG C rdar://6175959
14  */
15 
16 
17 #include <stdio.h>
18 #include <Block_private.h>
19 
20 
21 int AssignCalled = 0;
22 int DisposeCalled = 0;
23 
24 // local copy instead of libSystem.B.dylib copy
25 void _Block_object_assign(void *destAddr, const void *object, const int isWeak) {
26     //printf("_Block_object_assign(%p, %p, %d) called\n", destAddr, object, isWeak);
27     AssignCalled = 1;
28 }
29 
30 void _Block_object_dispose(const void *object, const int isWeak) {
31     //printf("_Block_object_dispose(%p, %d) called\n", object, isWeak);
32     DisposeCalled = 1;
33 }
34 
35 struct MyStruct {
36     long isa;
37     long field;
38 };
39 
40 typedef struct MyStruct *__attribute__((NSObject)) MyStruct_t;
41 
42 int main(int argc, char *argv[]) {
43     if (__APPLE_CC__ < 5627) {
44         printf("need compiler version %d, have %d\n", 5627, __APPLE_CC__);
45         return 0;
46     }
47     // create a block
48     struct MyStruct X;
49     MyStruct_t xp = (MyStruct_t)&X;
50     xp->field = 10;
51     void (^myBlock)(void) = ^{ printf("field is %ld\n", xp->field); };
52     // should be a copy helper generated with a calls to above routines
53     // Lets find out!
54     struct Block_layout *bl = (struct Block_layout *)(void *)myBlock;
55     if ((bl->flags & BLOCK_HAS_COPY_DISPOSE) != BLOCK_HAS_COPY_DISPOSE) {
56         printf("no copy dispose!!!!\n");
57         return 1;
58     }
59     // call helper routines directly.  These will, in turn, we hope, call the stubs above
60     long destBuffer[256];
61     //printf("destbuffer is at %p, block at %p\n", destBuffer, (void *)bl);
62     //printf("dump is %s\n", _Block_dump(myBlock));
63     bl->descriptor->copy(destBuffer, bl);
64     bl->descriptor->dispose(bl);
65     if (AssignCalled == 0) {
66         printf("did not call assign helper!\n");
67         return 1;
68     }
69     if (DisposeCalled == 0) {
70         printf("did not call dispose helper\n");
71         return 1;
72     }
73     printf("%s: Success!\n", argv[0]);
74     return 0;
75 }
76