unit-tests/test-cases/symbol-resolver-lazy-prebound/main.c

   1 /*
   2  * Copyright (c) 2012 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 typedef int (*Func_t)(void);
  30
  31 int main()
  32 {
  33         // RTLD_NOW force lazy pointers to be bound early
  34         void* handle = dlopen("libfoo.dylib", RTLD_NOW);
  35         Func_t pFoo = (Func_t)dlsym(handle, "foo");
  36         int result = (*pFoo)();
  37         if ( result == 0 )
  38                 FAIL("symbol-resolver-lazy-prebound: resolver ran before initializer");
  39         else
  40                 PASS("symbol-resolver-lazy-prebound");
  41
  42         return EXIT_SUCCESS;
  43 }