elf/tst-dlopen-aout.c

   1 /* Test case for BZ #16634.
   2
   3    Verify that incorrectly dlopen()ing an executable without
   4    __RTLD_OPENEXEC does not cause assertion in ld.so.
   5
   6    Copyright (C) 2014-2019 Free Software Foundation, Inc.
   7    This file is part of the GNU C Library.
   8
   9    The GNU C Library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 2.1 of the License, or (at your option) any later version.
  13
  14    The GNU C Library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Lesser General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public
  20    License along with the GNU C Library; if not, see
  21    <http://www.gnu.org/licenses/>.
  22
  23    Note: this test currently only fails when glibc is configured with
  24    --enable-hardcoded-path-in-tests.  */
  25
  26 #include <assert.h>
  27 #include <dlfcn.h>
  28 #include <stdio.h>
  29 #include <pthread.h>
  30 #include <support/xthread.h>
  31
  32 __thread int x;
  33
  34 void *
  35 fn (void *p)
  36 {
  37   return p;
  38 }
  39
  40 static int
  41 do_test (int argc, char *argv[])
  42 {
  43   int j;
  44
  45   for (j = 0; j < 100; ++j)
  46     {
  47       pthread_t thr;
  48       void *p;
  49
  50       p = dlopen (argv[0], RTLD_LAZY);
  51       if (p != NULL)
  52         {
  53           fprintf (stderr, "dlopen unexpectedly succeeded\n");
  54           return 1;
  55         }
  56       /* We create threads to force TLS allocation, which triggers
  57          the original bug i.e. running out of surplus slotinfo entries
  58          for TLS.  */
  59       thr = xpthread_create (NULL, fn, NULL);
  60       xpthread_join (thr);
  61     }
  62
  63   return 0;
  64 }
  65
  66 #define TEST_FUNCTION_ARGV do_test
  67 #include <support/test-driver.c>