gdb/testsuite/gdb.cp/virtfunc.cc

   1 /* This test script is part of GDB, the GNU debugger.
   2
   3    Copyright 1993-2017 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 // Pls try the following program on virtual functions and try to do print on
  19 //  most of the code in main().  Almost none of them works !
  20
  21 //
  22 // The inheritance structure is:
  23 //
  24 // V : VA VB
  25 // A : (V)
  26 // B : A
  27 // D : AD (V)
  28 // C : (V)
  29 // E : B (V) D C
  30 //
  31
  32 class VA
  33 {
  34 public:
  35     int va;
  36 };
  37
  38 class VB
  39 {
  40 public:
  41     int vb;
  42     int fvb();
  43     virtual int vvb();
  44 };
  45
  46 class V : public VA, public VB
  47 {
  48 public:
  49     int f();
  50     virtual int vv();
  51     int w;
  52 };
  53
  54 class A : virtual public V
  55 {
  56 public:
  57     virtual int f();
  58 private:
  59     int a;
  60 };
  61
  62 class B : public A
  63 {
  64 public:
  65     int f();
  66 private:
  67     int b;
  68 };
  69
  70 class C : public virtual V
  71 {
  72 public:
  73     int c;
  74 };
  75
  76 class AD
  77 {
  78 public:
  79     virtual int vg() = 0;
  80 };
  81
  82 class D : public AD, virtual public V
  83 {
  84 public:
  85     static void s();
  86     virtual int vg();
  87     virtual int vd();
  88     int fd();
  89     int d;
  90 };
  91
  92 class E : public B, virtual public V, public D, public C
  93 {
  94 public:
  95     int f();
  96     int vg();
  97     int vv();
  98     int e;
  99 };
 100
 101 D   dd;
 102 D*  ppd = &dd;
 103 AD* pAd = &dd;
 104
 105 A   a;
 106 B   b;
 107 C   c;
 108 D   d;
 109 E   e;
 110 V   v;
 111 VB  vb;
 112 VA  va;
 113
 114
 115 A*      pAa     =       &a;
 116 A*      pAe     =       &e;
 117
 118 B*      pBe     =       &e;
 119
 120 D*      pDd     =       &d;
 121 D*      pDe     =       &e;
 122
 123 V*      pVa     =       &a;
 124 V*      pVv     =       &v;
 125 V*      pVe     =       &e;
 126 V*     pVd      =       &d;
 127
 128 AD*     pADe    =       &e;
 129
 130 E*      pEe     =       &e;
 131
 132 VB*     pVB     =       &vb;
 133
 134 void init()
 135 {
 136         a.vb = 1;
 137         b.vb = 2;
 138         c.vb = 3;
 139         d.vb = 4;
 140         e.vb = 5;
 141         v.vb = 6;
 142         vb.vb = 7;
 143
 144         d.d     = 1;
 145         e.d     =  2;
 146 }
 147
 148 extern "C" int printf(const char *, ...);
 149
 150 int all_count = 0;
 151 int failed_count = 0;
 152
 153 #define TEST(EXPR, EXPECTED) \
 154    ret = EXPR; \
 155    if (ret != EXPECTED) {\
 156       printf("Failed %s is %d, should be %d!\n", #EXPR, ret, EXPECTED); \
 157       failed_count++; } \
 158    all_count++;
 159
 160 int ret;
 161
 162 void test_calls()
 163 {
 164         TEST(pAe->f(), 20);
 165         TEST(pAa->f(), 1);
 166
 167         TEST(pDe->vg(), 202);
 168         TEST(pADe->vg(), 202);
 169         TEST(pDd->vg(), 101);
 170
 171         TEST(pEe->vvb(), 411);
 172
 173         TEST(pVB->vvb(), 407);
 174
 175         TEST(pBe->vvb(), 411);
 176         TEST(pDe->vvb(), 411);
 177
 178         TEST(pEe->vd(), 282);
 179         TEST(pEe->fvb(), 311);
 180
 181         TEST(pEe->D::vg(), 102);
 182         printf("Did %d tests, of which %d failed.\n", all_count, failed_count);
 183 }
 184
 185 int main()
 186 {
 187     init();
 188
 189     e.w = 7;
 190     e.vb = 11;
 191
 192     test_calls();
 193     return 0;
 194
 195 }
 196
 197 int A::f() {return 1;}
 198 int B::f() {return 2;}
 199 void D::s() {}
 200 int E::f() {return 20;}
 201 int D::vg() {return 100+d;}
 202 int E::vg() {return 200+d;}
 203 int V::f() {return 600+w;}
 204 int V::vv() {return 400+w;}
 205 int E::vv() {return 450+w;}
 206 int D::fd() {return 250+d;}
 207 int D::vd() {return 280+d;}
 208 int VB::fvb() {return 300+vb;}
 209 int VB::vvb() {return 400+vb;}