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 //  -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil;  -*-
8 // CONFIG
9 
10 #import <stdio.h>
11 #import <stdlib.h>
12 #import <string.h>
13 
14 typedef struct {
15   int a;
16   int b;
17 } MiniStruct;
18 
main(int argc,const char * argv[])19 int main (int argc, const char * argv[]) {
20     MiniStruct inny;
21     MiniStruct outty;
22     MiniStruct (^copyStruct)(MiniStruct);
23 
24     memset(&inny, 0xA5, sizeof(inny));
25     memset(&outty, 0x2A, sizeof(outty));
26 
27     inny.a = 12;
28     inny.b = 42;
29 
30     copyStruct = ^(MiniStruct aTinyStruct){ return aTinyStruct; };  // pass-by-value intrinsically copies the argument
31 
32     outty = copyStruct(inny);
33 
34     if ( &inny == &outty ) {
35         printf("%s: struct wasn't copied.", argv[0]);
36         exit(1);
37     }
38     if ( (inny.a != outty.a) || (inny.b != outty.b) ) {
39         printf("%s: struct contents did not match.", argv[0]);
40         exit(1);
41     }
42 
43     printf("%s: success\n", argv[0]);
44     return 0;
45 }
46