gdb/testsuite/gdb.cp/chained-calls.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2014-2021 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 class S
  19 {
  20 public:
  21   S () { }
  22   S (S &obj);
  23
  24   S operator+ (const S &s);
  25
  26   int a;
  27 };
  28
  29 S::S (S &obj)
  30 {
  31   a = obj.a;
  32 }
  33
  34 S
  35 S::operator+ (const S &s)
  36 {
  37   S res;
  38
  39   res.a = a + s.a;
  40
  41   return res;
  42 }
  43
  44 S
  45 f (int i)
  46 {
  47   S s;
  48
  49   s.a = i;
  50
  51   return s;
  52 }
  53
  54 int
  55 g (const S &s)
  56 {
  57   return s.a;
  58 }
  59
  60 class A
  61 {
  62 public:
  63   A operator+ (const A &);
  64   int a;
  65 };
  66
  67 A
  68 A::operator+ (const A &obj)
  69 {
  70   A n;
  71
  72   n.a = a + obj.a;
  73
  74   return n;
  75 }
  76
  77 A
  78 p ()
  79 {
  80   A a;
  81   a.a = 12345678;
  82   return a;
  83 }
  84
  85 A
  86 r ()
  87 {
  88   A a;
  89   a.a = 10000000;
  90   return a;
  91 }
  92
  93 A
  94 q (const A &a)
  95 {
  96   return a;
  97 }
  98
  99 class B
 100 {
 101 public:
 102   int b[1024];
 103 };
 104
 105 B
 106 makeb ()
 107 {
 108   B b;
 109   int i;
 110
 111   for (i = 0; i < 1024; i++)
 112     b.b[i] = i;
 113
 114   return b;
 115 }
 116
 117 int
 118 getb (const B &b, int i)
 119 {
 120   return b.b[i];
 121 }
 122
 123 class C
 124 {
 125 public:
 126   C ();
 127   ~C ();
 128
 129   A operator* ();
 130
 131   A *a_ptr;
 132 };
 133
 134 C::C ()
 135 {
 136   a_ptr = new A;
 137   a_ptr->a = 5678;
 138 }
 139
 140 C::~C ()
 141 {
 142   delete a_ptr;
 143 }
 144
 145 A
 146 C::operator* ()
 147 {
 148   return *a_ptr;
 149 }
 150
 151 #define TYPE_INDEX 1
 152
 153 enum type
 154 {
 155   INT,
 156   CHAR
 157 };
 158
 159 union U
 160 {
 161 public:
 162   U (type t);
 163   type get_type ();
 164
 165   int a;
 166   char c;
 167   type tp[2];
 168 };
 169
 170 U::U (type t)
 171 {
 172   tp[TYPE_INDEX] = t;
 173 }
 174
 175 U
 176 make_int ()
 177 {
 178   return U (INT);
 179 }
 180
 181 U
 182 make_char ()
 183 {
 184   return U (CHAR);
 185 }
 186
 187 type
 188 U::get_type ()
 189 {
 190   return tp[TYPE_INDEX];
 191 }
 192
 193 int
 194 main ()
 195 {
 196   int i = g(f(0));
 197   A a = q(p() + r());
 198
 199   B b = makeb ();
 200   C c;
 201
 202   return i + getb(b, 0);  /* Break here  */
 203 }