unit-tests/test-cases/dlsym-RTLD_MAIN_ONLY/main.c

   1 /*
   2  * Copyright (c) 2008 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
  30 int foo()
  31 {
  32         return 0;
  33 }
  34
  35
  36 int main()
  37 {
  38         // make sure we get the foo() in main and not the one in libfoo.dylib
  39         if ( dlsym(RTLD_MAIN_ONLY, "foo") != &foo ) {
  40                 FAIL("dlsym(RTLD_MAIN_ONLY, \"foo\") returned wrong value");
  41         }
  42
  43         // make sure don't find bar() in libfoo.dylib
  44         if ( dlsym(RTLD_MAIN_ONLY, "bar") != NULL ) {
  45                 FAIL("dlsym(RTLD_MAIN_ONLY, \"bar\") returned non-NULL");
  46         }
  47
  48
  49         PASS("dlsym-RTLD_MAIN_ONLY");
  50         return EXIT_SUCCESS;
  51 }