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

   1 /* This test script is part of GDB, the GNU debugger.
   2
   3    Copyright 2006-2019 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 reference parameter tests, based on ref-params.cc.  */
  19
  20 #include <utility>
  21
  22 struct Parent
  23 {
  24   Parent (int id0) : id (id0) { }
  25   int id;
  26 };
  27
  28 struct Child : public Parent
  29 {
  30   Child (int id0) : Parent (id0) { }
  31 };
  32
  33 int
  34 f1 (Parent &&R)
  35 {
  36   return R.id;                  /* Set breakpoint marker3 here.  */
  37 }
  38
  39 int
  40 f2 (Child &&C)
  41 {
  42   return f1 (std::move (C));                 /* Set breakpoint marker2 here.  */
  43 }
  44
  45 struct OtherParent
  46 {
  47   OtherParent (int other_id0) : other_id (other_id0) { }
  48   int other_id;
  49 };
  50
  51 struct MultiChild : public Parent, OtherParent
  52 {
  53   MultiChild (int id0) : Parent (id0), OtherParent (id0 * 2) { }
  54 };
  55
  56 int
  57 mf1 (OtherParent &&R)
  58 {
  59   return R.other_id;
  60 }
  61
  62 int
  63 mf2 (MultiChild &&C)
  64 {
  65   return mf1 (std::move (C));
  66 }
  67
  68 int
  69 main ()
  70 {
  71   Child Q(40);
  72   Child &QR = Q;
  73
  74   /* Set breakpoint marker1 here.  */
  75
  76   f1 (Child (41));
  77   f2 (Child (42));
  78
  79   MultiChild MQ (53);
  80   MultiChild &MQR = MQ;
  81
  82   mf2 (std::move (MQ));                 /* Set breakpoint MQ here.  */
  83 }