/* Copyright (C) 1999-2014 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/>. */ #include <pwd.h> static void check (uid_t uid) { char buf[1024]; (void) getpw (uid, buf); } int main (void) { uid_t uid; /* Just call it a different number of times the range should be large enough to find some existing and some non existing uids. */ for (uid = 0; uid < 2000; ++uid) check (uid); return 0; }