gdb/testsuite/gdb.cp/rvalue-ref-casts.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2002-2022 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 /* Rvalue references casting tests, based on casts.cc.  */
  19
  20 #include <utility>
  21
  22 struct A
  23 {
  24   int a;
  25   A (int aa): a (aa) {}
  26 };
  27
  28 struct B: public A
  29 {
  30   int b;
  31   B (int aa, int bb): A (aa), b (bb) {}
  32 };
  33
  34
  35 struct Alpha
  36 {
  37   virtual void x () { }
  38 };
  39
  40 struct Gamma
  41 {
  42 };
  43
  44 struct Derived : public Alpha
  45 {
  46 };
  47
  48 struct VirtuallyDerived : public virtual Alpha
  49 {
  50 };
  51
  52 struct DoublyDerived : public VirtuallyDerived,
  53                        public virtual Alpha,
  54                        public Gamma
  55 {
  56 };
  57
  58 int
  59 main (int argc, char **argv)
  60 {
  61   A *a = new B (42, 1729);
  62   B *b = (B *) a;
  63   A &ar = *b;
  64   B &br = (B&)ar;
  65   A &&arr = std::move (A (42));
  66   B &&brr = std::move (B (42, 1729));
  67
  68   Derived derived;
  69   DoublyDerived doublyderived;
  70
  71   Alpha *ad = &derived;
  72   Alpha *add = &doublyderived;
  73
  74   return 0;  /* breakpoint spot: rvalue-ref-casts.exp: 1 */
  75 }