/* This testcase is part of GDB, the GNU debugger. Copyright 2020-2021 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include struct no_size { int n; int items[]; }; struct zero_size { int n; int items[0]; }; struct zero_size_only { int items[0]; }; struct no_size *ns; struct zero_size *zs; struct zero_size_only *zso; static void break_here (void) { } int main (void) { ns = (struct no_size *) malloc (sizeof (*ns) + 3 * sizeof (int)); zs = (struct zero_size *) malloc (sizeof (*zs) + 3 * sizeof (int)); zso = (struct zero_size_only *) malloc (sizeof (*zso) + 3 * sizeof (int)); ns->n = 3; ns->items[0] = 101; ns->items[1] = 102; ns->items[2] = 103; zs->n = 3; zs->items[0] = 201; zs->items[1] = 202; zs->items[2] = 203; zso->items[0] = 301; zso->items[1] = 302; zso->items[2] = 303; break_here (); return 0; }