gdb/testsuite/gdb.reverse/getrandom.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2022-2023 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <sys/random.h>
  19
  20 void
  21 marker1 (void)
  22 {
  23 }
  24
  25 void
  26 marker2 (void)
  27 {
  28 }
  29
  30 unsigned char buf[6];
  31
  32 int
  33 main (void)
  34 {
  35   buf[0] = 0xff;
  36   buf[5] = 0xff;
  37   marker1 ();
  38   volatile ssize_t r = getrandom (&buf[1], 4, 0);
  39   marker2 ();
  40   return 0;
  41 }