gdb/testsuite/gdb.cp/class2.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2003, 2004, 2007, 2008, 2009 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
  19 struct A
  20 {
  21   virtual ~A ();
  22   int a1;
  23 };
  24
  25 A::~A()
  26 {
  27   a1 = 800;
  28 }
  29
  30 struct B : public A
  31 {
  32   virtual ~B ();
  33   int b1;
  34   int b2;
  35 };
  36
  37 B::~B()
  38 {
  39   a1 = 900;
  40   b1 = 901;
  41   b2 = 902;
  42 }
  43
  44 struct C : public B
  45 {
  46   A *c1;
  47   A *c2;
  48 };
  49
  50 // Stop the compiler from optimizing away data.
  51 void refer (A *)
  52 {
  53   ;
  54 }
  55
  56 struct empty {};
  57
  58 // Stop the compiler from optimizing away data.
  59 void refer (empty *)
  60 {
  61   ;
  62 }
  63
  64 int main (void)
  65 {
  66   A alpha, *aap, *abp, *acp;
  67   B beta, *bbp;
  68   C gamma;
  69   empty e;
  70
  71   alpha.a1 = 100;
  72   beta.a1 = 200; beta.b1 = 201; beta.b2 = 202;
  73   gamma.c1 = 0; gamma.c2 = (A *) ~0UL;
  74
  75   aap = &alpha; refer (aap);
  76   abp = &beta;  refer (abp);
  77   bbp = &beta;  refer (bbp);
  78   acp = &gamma; refer (acp);
  79   refer (&e);
  80
  81   return 0;  // marker return 0
  82 } // marker close brace