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