unit-tests/test-cases/crt-custom/main.c

   1 /*
   2  * Copyright (c) 2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <stdio.h>  // fprintf(), NULL
  24 #include <stdlib.h> // exit(), EXIT_SUCCESS
  25 #include <dlfcn.h>
  26
  27 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  28
  29 // the value of flag is altered by mystart
  30 int flag = 0;
  31
  32
  33 #if __LP64__
  34         // for 64-bit binaries initializers are always called before entry point
  35         #define ENTRY_BEFORE_INIT 0
  36 #else
  37         // for pre 10.5, 32-bit binaries, entry point is called which then calls initializers
  38         #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  39                 #define ENTRY_BEFORE_INIT 1
  40         #else
  41                 #define ENTRY_BEFORE_INIT 0
  42         #endif
  43 #endif
  44
  45
  46 void __attribute__((constructor)) myinit()
  47 {
  48 #if ENTRY_BEFORE_INIT
  49         if ( flag != 2 ) {
  50                 FAIL("crt-custom entry point not called before initializer");
  51                 exit(0);
  52         }
  53 #endif
  54         flag = 1;
  55 }
  56
  57
  58 int main()
  59 {
  60 #if ENTRY_BEFORE_INIT
  61         if ( flag != 1 ) {
  62                 FAIL("crt-custom initializer not called");
  63                 exit(0);
  64         }
  65 #else
  66         if ( flag != 2 ) {
  67                 FAIL("crt-custom entry not called");
  68                 exit(0);
  69         }
  70 #endif
  71
  72         PASS("crt-custom");
  73
  74         return 0;
  75 }