test/BlocksRuntime/small-struct.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 //  -*- 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
  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 }