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

   1 /*
   2  * Copyright (c) 2005 Apple Computer, 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 <string.h>
  26 #include <dlfcn.h>
  27
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30
  31 int foo()
  32 {
  33         return 42;
  34 }
  35
  36
  37 int main()
  38 {
  39         void* handle = (void*)0x12345;  // bogus value
  40
  41         // expect dlsym() to return NULL
  42         void* sym = dlsym(handle, "foo");
  43         if ( sym != NULL ) {
  44                 FAIL("dlsym(handle, \"foo\") should not have succeeded");
  45                 exit(1);
  46         }
  47         // expect dlerro() to mention "handle"
  48         if ( strstr(dlerror(), "handle") == NULL ) {
  49                 FAIL("dlerror() after dlsym(handle, \"foo\") does not mention \"handle\"");
  50                 exit(1);
  51         }
  52
  53         PASS("dlsym-error");
  54         return EXIT_SUCCESS;
  55 }