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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2014-2024 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 /* Sizeof tests for rvalue references, based on cpsizeof.cc.  */
  19
  20 #include <utility>
  21
  22 struct Class
  23 {
  24   int a;
  25   char b;
  26   long c;
  27
  28   Class () : a (1), b ('2'), c (3) { }
  29 };
  30
  31 union Union
  32 {
  33   Class *kp;
  34   char a;
  35   int b;
  36   long c;
  37 };
  38
  39 enum Enum { A, B, C, D };
  40
  41 typedef unsigned char a4[4];
  42 typedef unsigned char a8[8];
  43 typedef unsigned char a12[12];
  44 typedef Class c4[4];
  45 typedef Union u8[8];
  46 typedef Enum e12[12];
  47
  48 #define T(N)                                    \
  49   N N ## obj;                                   \
  50   N&& N ## _rref = std::move (N ## obj);        \
  51   N* N ## p = &(N ## obj);                      \
  52   N*&& N ## p_rref = std::move (N ## p);        \
  53   int size_ ## N = sizeof (N ## _rref);         \
  54   int size_ ## N ## p = sizeof (N ## p_rref);   \
  55
  56 int
  57 main ()
  58 {
  59   T (char);
  60   T (int);
  61   T (long);
  62   T (float);
  63   T (double);
  64   T (a4);
  65   T (a8);
  66   T (a12);
  67   T (Class);
  68   T (Union);
  69   T (Enum);
  70   T (c4);
  71   T (u8);
  72   T (e12);
  73
  74   return 0; /* break here */
  75 }