compiler-rt/test/BlocksRuntime/small-struct.c

   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 }