gdb/testsuite/gdb.base/flexible-array-member.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2020-2024 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 <stdlib.h>
  19
  20 struct no_size
  21 {
  22   int n;
  23   int items[];
  24 };
  25
  26 struct zero_size
  27 {
  28   int n;
  29   int items[0];
  30 };
  31
  32 struct zero_size_only
  33 {
  34   int items[0];
  35 };
  36
  37 struct no_size *ns;
  38 struct zero_size *zs;
  39 struct zero_size_only *zso;
  40
  41 static void
  42 break_here (void)
  43 {
  44 }
  45
  46 int
  47 main (void)
  48 {
  49   ns = (struct no_size *) malloc (sizeof (*ns) + 3 * sizeof (int));
  50   zs = (struct zero_size *) malloc (sizeof (*zs) + 3 * sizeof (int));
  51   zso = (struct zero_size_only *) malloc (sizeof (*zso) + 3 * sizeof (int));
  52
  53   ns->n = 3;
  54   ns->items[0] = 101;
  55   ns->items[1] = 102;
  56   ns->items[2] = 103;
  57
  58   zs->n = 3;
  59   zs->items[0] = 201;
  60   zs->items[1] = 202;
  61   zs->items[2] = 203;
  62
  63   zso->items[0] = 301;
  64   zso->items[1] = 302;
  65   zso->items[2] = 303;
  66
  67   break_here ();
  68
  69   return 0;
  70 }