gdb/testsuite/gdb.base/ptype-offsets.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2017-2024 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 #include <stdint.h>
  19
  20 /* A struct with many types of fields, in order to test 'ptype
  21    /o'.  */
  22
  23 struct abc
  24 {
  25   /* Virtual destructor.  */
  26   virtual ~abc ()
  27   {}
  28
  29   /* 8-byte address.  Because of the virtual destructor above, this
  30      field's offset will be 8.  */
  31   void *field1;
  32
  33   /* No hole here.  */
  34
  35   /* 4-byte int bitfield of 1-bit.  */
  36   unsigned int field2 : 1;
  37
  38   /* 31-bit hole here.  */
  39
  40   /* 4-byte int.  */
  41   signed int field3;
  42
  43   /* No hole here.  */
  44
  45   /* 1-byte char.  */
  46   signed char field4;
  47
  48   /* 7-byte hole here.  */
  49
  50   /* 8-byte int.  */
  51   uint64_t field5;
  52
  53   /* We just print the offset and size of a union, ignoring its
  54      fields.  */
  55   union
  56   {
  57     /* 8-byte address.  */
  58     void *field6;
  59
  60     /* 4-byte int.  */
  61     signed int field7;
  62   } field8;
  63
  64   /* Empty constructor.  */
  65   abc ()
  66   {}
  67
  68   /* Typedef defined in-struct.  */
  69   typedef short my_int_type;
  70
  71   my_int_type field9;
  72 };
  73
  74 /* This struct will be nested inside 'struct xyz'.  */
  75
  76 struct tuv
  77 {
  78   signed int a1;
  79
  80   signed char *a2;
  81
  82   signed int a3;
  83 };
  84
  85 /* This struct will be nested inside 'struct pqr'.  */
  86
  87 struct xyz
  88 {
  89   signed int f1;
  90
  91   signed char f2;
  92
  93   void *f3;
  94
  95   struct tuv f4;
  96 };
  97
  98 /* A struct with a nested struct.  */
  99
 100 struct pqr
 101 {
 102   signed int ff1;
 103
 104   struct xyz ff2;
 105
 106   signed char ff3;
 107 };
 108
 109 /* A union with two nested structs.  */
 110
 111 union qwe
 112 {
 113   struct tuv fff1;
 114
 115   struct xyz fff2;
 116 };
 117
 118 /* A struct with an union.  */
 119
 120 struct poi
 121 {
 122   signed int f1;
 123
 124   union qwe f2;
 125
 126   uint16_t f3;
 127
 128   struct pqr f4;
 129 };
 130
 131 /* A struct with bitfields.  */
 132
 133 struct tyu
 134 {
 135   signed int a1 : 1;
 136
 137   signed int a2 : 3;
 138
 139   signed int a3 : 23;
 140
 141   signed char a4 : 2;
 142
 143   int64_t a5;
 144
 145   signed int a6 : 5;
 146
 147   int64_t a7 : 3;
 148 };
 149
 150 /* A struct with structs and unions.  */
 151
 152 struct asd
 153 {
 154   struct jkl
 155   {
 156       signed char *f1;
 157       union
 158       {
 159         void *ff1;
 160       } f2;
 161       union
 162       {
 163         signed char *ff2;
 164       } f3;
 165       int f4 : 5;
 166       unsigned int f5 : 1;
 167       short f6;
 168   } f7;
 169   unsigned long f8;
 170   signed char *f9;
 171   int f10 : 4;
 172   unsigned int f11 : 1;
 173   unsigned int f12 : 1;
 174   unsigned int f13 : 1;
 175   unsigned int f14 : 1;
 176   void *f15;
 177   void *f16;
 178 };
 179
 180 /* See PR c++/23373.  */
 181
 182 struct static_member
 183 {
 184   static static_member Empty;
 185   int abc;
 186 };
 187
 188 /* Work around PR gcc/101452.  */
 189 static_member static_member::Empty;
 190
 191 struct empty_member
 192 {
 193   struct { } empty;
 194   int an_int;
 195 };
 196
 197 int
 198 main (int argc, char *argv[])
 199 {
 200   struct abc foo;
 201   struct pqr bar;
 202   union qwe c;
 203   struct poi d;
 204   struct tyu e;
 205   struct asd f;
 206   uint8_t i;
 207   static_member stmember;
 208   empty_member emember;
 209
 210   return 0;
 211 }