gdb/testsuite/gdb.base/unload.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2004-2019 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20
  21 #ifdef __WIN32__
  22 #include <windows.h>
  23 #define dlopen(name, mode) LoadLibrary (TEXT (name))
  24 #ifdef _WIN32_WCE
  25 # define dlsym(handle, func) GetProcAddress (handle, TEXT (func))
  26 #else
  27 # define dlsym(handle, func) GetProcAddress (handle, func)
  28 #endif
  29 #define dlclose(handle) FreeLibrary (handle)
  30 #else
  31 #include <dlfcn.h>
  32 #endif
  33
  34 int k = 0;
  35
  36 int main()
  37 {
  38   void *handle;
  39   int (*unloadshr) (int);
  40   int y;
  41   const char *msg;
  42
  43   handle = dlopen (SHLIB_NAME, RTLD_LAZY);
  44
  45   if (!handle)
  46     {
  47       fprintf (stderr, "%s\n", dlerror ());
  48       exit (1);
  49     }
  50
  51   unloadshr = (int (*) (int)) dlsym (handle, "shrfunc1");
  52
  53   if (!unloadshr)
  54     {
  55 #ifdef __WIN32__
  56       fprintf (stderr, "error %d occurred\n", GetLastError ());
  57 #else
  58       fprintf (stderr, "%s\n", dlerror ());
  59 #endif
  60       exit (1);
  61     }
  62
  63   y = (*unloadshr) (1);
  64
  65   dlclose (handle);
  66   handle = NULL;        /* y-set-1 */
  67
  68   /* The second library should share the same memory address.  */
  69
  70   handle = dlopen (SHLIB_NAME2, RTLD_LAZY);
  71
  72   if (!handle)
  73     {
  74       fprintf (stderr, "%s\n", dlerror ());
  75       exit (1);
  76     }
  77
  78   unloadshr = (int (*)(int)) dlsym (handle, "shrfunc2");
  79
  80   if (!unloadshr)
  81     {
  82 #ifdef __WIN32__
  83       fprintf (stderr, "error %d occurred\n", GetLastError ());
  84 #else
  85       fprintf (stderr, "%s\n", dlerror ());
  86 #endif
  87       exit (1);
  88     }
  89
  90   y = (*unloadshr) (2);
  91
  92   dlclose (handle);
  93   handle = NULL;        /* y-set-2 */
  94
  95   return 0;
  96 }