gdb/testsuite/gdb.cp/class2.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2003, 2004, 2007 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 2 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, write to the Free Software
  17    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18    */
  19
  20 struct A
  21 {
  22   virtual ~A ();
  23   int a1;
  24 };
  25
  26 A::~A()
  27 {
  28   a1 = 800;
  29 }
  30
  31 struct B : public A
  32 {
  33   virtual ~B ();
  34   int b1;
  35   int b2;
  36 };
  37
  38 B::~B()
  39 {
  40   a1 = 900;
  41   b1 = 901;
  42   b2 = 902;
  43 }
  44
  45 // Stop the compiler from optimizing away data.
  46 void refer (A *)
  47 {
  48   ;
  49 }
  50
  51 struct empty {};
  52
  53 // Stop the compiler from optimizing away data.
  54 void refer (empty *)
  55 {
  56   ;
  57 }
  58
  59 int main (void)
  60 {
  61   A alpha, *aap, *abp;
  62   B beta, *bbp;
  63   empty e;
  64
  65   alpha.a1 = 100;
  66   beta.a1 = 200; beta.b1 = 201; beta.b2 = 202;
  67
  68   aap = &alpha; refer (aap);
  69   abp = &beta;  refer (abp);
  70   bbp = &beta;  refer (bbp);
  71   refer (&e);
  72
  73   return 0;  // marker return 0
  74 } // marker close brace