unit-tests/test-cases/lazy-dylib-missing-symbol/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>
  24 #include <stdlib.h>
  25 #include <stdbool.h>
  26
  27 #include "test.h"
  28
  29
  30 #if LAZY_HANDLER
  31 // If a linkage unit defines dyld_lazy_dylib_proxy()
  32 // then when binding lazy symbols, if one
  33 // cannot be bound, it is bound to this function
  34 // instead.
  35 int dyld_lazy_dylib_proxy()
  36 {
  37         return 7;
  38 }
  39 #endif
  40
  41
  42 extern int foo();       // should exist
  43 extern int bar();       // should not exist
  44
  45 int main()
  46 {
  47         // sanity check that foo was found
  48         if ( foo() != 1 ) {
  49                 FAIL("lazy-dylib-missing-symbol: foo not found");
  50                 return 0;
  51         }
  52
  53 #if LAZY_HANDLER
  54         // sanity check that bar was not found
  55         // lazy loading return 7 when function cannot be found
  56         if ( bar() != 7 ) {
  57                 FAIL("lazy-dylib-missing-symbol: dyld_lazy_dylib_proxy() not used for bar");
  58                 return 0;
  59         }
  60 #else
  61         // sanity check that bar was not found
  62         // lazy loading return 0 when function cannot be found
  63         if ( bar() != 0 ) {
  64                 FAIL("lazy-dylib-missing-symbol: bar found");
  65                 return 0;
  66         }
  67 #endif
  68         PASS("lazy-dylib-missing-symbol");
  69         return 0;
  70 }
  71