glibc/elf/tst-null-argv.c

/* Verify that program does not crash when LD_DEBUG is set and the program name
   is not available.
   Copyright (C) 2013-2017 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

extern void foo (void);

int
do_test (int argc, char **argv)
{
  argv[0] = argv[1];
  argc--;

  /* This should result in a symbol lookup, causing a volley of debug output
     when LD_DEBUG=symbols.  */
  foo ();

  return 0;
}

#define TEST_FUNCTION_ARGV do_test
#include <support/test-driver.c>