elf/tst-globalmod2.c

   1 /* Test BZ #28455.
   2    Copyright (C) 2022-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* In glibc configured with --enable-hardcoded-path-in-tests, a test
  20    program built with -Wl,--enable-new-dtags, which adds DT_RUNPATH,
  21    instead of DT_RPATH, can call a function in a shared library, which
  22    dlopens another shared library.  */
  23
  24 #include <dlfcn.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27
  28 extern int test (void);
  29
  30 int
  31 test (void)
  32 {
  33   (void) dlopen ("reldepmod4.so", RTLD_LAZY | RTLD_GLOBAL);
  34   if (dlsym (RTLD_DEFAULT, "call_me") != NULL)
  35     {
  36       puts ("found \"call_me\"");
  37       return EXIT_SUCCESS;
  38     }
  39   puts ("didn't find \"call_me\"");
  40   return EXIT_FAILURE;
  41 }