elf/tst-null-argv.c

   1 /* Verify that program does not crash when LD_DEBUG is set and the program name
   2    is not available.
   3    Copyright (C) 2013-2019 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 extern void foo (void);
  21
  22 int
  23 do_test (int argc, char **argv)
  24 {
  25   argv[0] = argv[1];
  26   argc--;
  27
  28   /* This should result in a symbol lookup, causing a volley of debug output
  29      when LD_DEBUG=symbols.  */
  30   foo ();
  31
  32   return 0;
  33 }
  34
  35 #define TEST_FUNCTION_ARGV do_test
  36 #include <support/test-driver.c>