unit-tests/test-cases/dlerror-clear/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 #include <pthread.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31
  32 ///
  33 /// This tests that the dlerror message is cleared when dlerror is called
  34 ///
  35
  36 int main()
  37 {
  38         // try to non-existent library
  39         void* handle1 = dlopen("frobulite", RTLD_LAZY);
  40         if ( handle1 != NULL ) {
  41                 FAIL("dlerror-clear: dlopen(\"frobulite\", RTLD_LAZY) succeeded but should have failed");
  42                 exit(0);
  43         }
  44
  45         // verify there is an error message
  46         const char* msg = dlerror();
  47         if ( msg == NULL ) {
  48                 FAIL("dlerror-clear: dlerror() returned NULL but should have returned an error message");
  49                 exit(0);
  50         }
  51
  52         // verify error message was cleared
  53         const char* msg2 = dlerror();
  54         if ( msg2 != NULL ) {
  55                 FAIL("dlerror-clear: dlerror() returned message but should have returned NULL");
  56                 exit(0);
  57         }
  58
  59         PASS("dlerror-clear");
  60         return 0;
  61 }