gdb/testsuite/gdb.python/py-prettyprint.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2020 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 <string.h>
  19
  20 struct s
  21 {
  22   int a;
  23   int *b;
  24 };
  25
  26 struct ss
  27 {
  28   struct s a;
  29   struct s b;
  30 };
  31
  32 struct arraystruct
  33 {
  34   int y;
  35   struct s x[2];
  36 };
  37
  38 struct ns {
  39   const char *null_str;
  40   int length;
  41 };
  42
  43 struct lazystring {
  44   const char *lazy_str;
  45   /* If -1, don't pass length to gdb.lazy_string().  */
  46   int len;
  47 };
  48
  49 struct hint_error {
  50   int x;
  51 };
  52
  53 struct children_as_list {
  54   int x;
  55 };
  56
  57 #ifdef __cplusplus
  58 struct S : public s {
  59   int zs;
  60 };
  61
  62 struct SS {
  63   int zss;
  64   S s;
  65 };
  66
  67 struct SSS
  68 {
  69   SSS (int x, const S& r);
  70   int a;
  71   const S &b;
  72 };
  73 SSS::SSS (int x, const S& r) : a(x), b(r) { }
  74
  75 class VirtualTest
  76 {
  77  private:
  78   int value;
  79
  80  public:
  81   VirtualTest ()
  82     {
  83       value = 1;
  84     }
  85 };
  86
  87 class Vbase1 : public virtual VirtualTest { };
  88 class Vbase2 : public virtual VirtualTest { };
  89 class Vbase3 : public virtual VirtualTest { };
  90
  91 class Derived : public Vbase1, public Vbase2, public Vbase3
  92 {
  93  private:
  94   int value;
  95
  96  public:
  97   Derived ()
  98     {
  99       value = 2;
 100     }
 101 };
 102
 103 class Fake
 104 {
 105   int sname;
 106
 107  public:
 108   Fake (const int name = 0):
 109   sname (name)
 110   {
 111   }
 112 };
 113 #endif
 114
 115 struct to_string_returns_value_inner
 116 {
 117   int val;
 118 };
 119
 120 struct to_string_returns_value_wrapper
 121 {
 122   struct to_string_returns_value_inner inner;
 123 };
 124
 125 struct substruct {
 126   int a;
 127   int b;
 128 };
 129
 130 struct outerstruct {
 131   struct substruct s;
 132   int x;
 133 };
 134
 135 struct outerstruct
 136 substruct_test (void)
 137 {
 138   struct outerstruct outer;
 139   outer.s.a = 0;
 140   outer.s.b = 0;
 141   outer.x = 0;
 142
 143   outer.s.a = 3;                /* MI outer breakpoint here */
 144
 145   return outer;
 146 }
 147
 148 typedef struct string_repr
 149 {
 150   struct whybother
 151   {
 152     const char *contents;
 153   } whybother;
 154 } string;
 155
 156 /* This lets us avoid malloc.  */
 157 int array[100];
 158 int narray[10];
 159
 160 struct justchildren
 161 {
 162   int len;
 163   int *elements;
 164 };
 165
 166 typedef struct justchildren nostring_type;
 167
 168 struct memory_error
 169 {
 170   const char *s;
 171 };
 172
 173 struct container
 174 {
 175   string name;
 176   int len;
 177   int *elements;
 178   int is_map_p;
 179 };
 180
 181 typedef struct container zzz_type;
 182
 183 string
 184 make_string (const char *s)
 185 {
 186   string result;
 187   result.whybother.contents = s;
 188   return result;
 189 }
 190
 191 zzz_type
 192 make_container (const char *s)
 193 {
 194   zzz_type result;
 195
 196   result.name = make_string (s);
 197   result.len = 0;
 198   result.elements = 0;
 199   result.is_map_p = 0;
 200
 201   return result;
 202 }
 203
 204 void
 205 add_item (zzz_type *c, int val)
 206 {
 207   if (c->len == 0)
 208     c->elements = array;
 209   c->elements[c->len] = val;
 210   ++c->len;
 211 }
 212
 213 void
 214 set_item(zzz_type *c, int i, int val)
 215 {
 216   if (i < c->len)
 217     c->elements[i] = val;
 218 }
 219
 220 void init_s(struct s *s, int a)
 221 {
 222   s->a = a;
 223   s->b = &s->a;
 224 }
 225
 226 void init_ss(struct ss *s, int a, int b)
 227 {
 228   init_s(&s->a, a);
 229   init_s(&s->b, b);
 230 }
 231
 232 void do_nothing(void)
 233 {
 234   int c;
 235
 236   c = 23;                       /* Another MI breakpoint */
 237 }
 238
 239 struct nullstr
 240 {
 241   char *s;
 242 };
 243
 244 struct string_repr string_1 = { { "one" } };
 245 struct string_repr string_2 = { { "two" } };
 246
 247 int
 248 eval_func (int p1, int p2, int p3, int p4, int p5, int p6, int p7, int p8)
 249 {
 250   return p1;
 251 }
 252
 253 static void
 254 eval_sub (void)
 255 {
 256   struct eval_type_s { int x; } eval1 = { 1 }, eval2 = { 2 }, eval3 = { 3 },
 257                                 eval4 = { 4 }, eval5 = { 5 }, eval6 = { 6 },
 258                                 eval7 = { 7 }, eval8 = { 8 }, eval9 = { 9 };
 259
 260   eval1.x++; /* eval-break */
 261 }
 262
 263 static void
 264 bug_14741()
 265 {
 266   zzz_type c = make_container ("bug_14741");
 267   add_item (&c, 71);
 268   set_item(&c, 0, 42); /* breakpoint bug 14741 */
 269   set_item(&c, 0, 5);
 270 }
 271
 272 /* Some typedefs/variables for checking that GDB doesn't lose typedefs
 273    when looking for a printer.  */
 274 typedef int int_type;
 275 typedef int_type int_type2;
 276 typedef int_type int_type3;
 277
 278 int an_int = -1;
 279 int_type an_int_type = 1;
 280 int_type2 an_int_type2 = 2;
 281 int_type3 an_int_type3 = 3;
 282
 283 int
 284 main ()
 285 {
 286   struct ss  ss;
 287   struct ss  ssa[2];
 288   struct arraystruct arraystruct;
 289   string x = make_string ("this is x");
 290   zzz_type c = make_container ("container");
 291   zzz_type c2 = make_container ("container2");
 292   const struct string_repr cstring = { { "const string" } };
 293   /* Clearing by being `static' could invoke an other GDB C++ bug.  */
 294   struct nullstr nullstr;
 295   nostring_type nstype, nstype2;
 296   struct memory_error me;
 297   struct ns ns, ns2;
 298   struct lazystring estring, estring2, estring3;
 299   struct hint_error hint_error;
 300   struct children_as_list children_as_list;
 301   struct to_string_returns_value_wrapper tsrvw = { { 1989 } };
 302
 303   nstype.elements = narray;
 304   nstype.len = 0;
 305
 306   me.s = "blah";
 307
 308   init_ss(&ss, 1, 2);
 309   init_ss(ssa+0, 3, 4);
 310   init_ss(ssa+1, 5, 6);
 311   memset (&nullstr, 0, sizeof nullstr);
 312
 313   arraystruct.y = 7;
 314   init_s (&arraystruct.x[0], 23);
 315   init_s (&arraystruct.x[1], 24);
 316
 317   ns.null_str = "embedded\0null\0string";
 318   ns.length = 20;
 319
 320   /* Make a "corrupted" string.  */
 321   ns2.null_str = NULL;
 322   ns2.length = 20;
 323
 324   estring.lazy_str = "embedded x\201\202\203\204";
 325   estring.len = -1;
 326
 327   /* Incomplete UTF-8, but ok Latin-1.  */
 328   estring2.lazy_str = "embedded x\302";
 329   estring2.len = -1;
 330
 331   estring3.lazy_str = NULL;
 332   estring3.len = 42;
 333
 334 #ifdef __cplusplus
 335   S cps;
 336
 337   cps.zs = 7;
 338   init_s(&cps, 8);
 339
 340   SS cpss;
 341   cpss.zss = 9;
 342   init_s(&cpss.s, 10);
 343
 344   SS cpssa[2];
 345   cpssa[0].zss = 11;
 346   init_s(&cpssa[0].s, 12);
 347   cpssa[1].zss = 13;
 348   init_s(&cpssa[1].s, 14);
 349
 350   SSS sss(15, cps);
 351
 352   SSS& ref (sss);
 353
 354   Derived derived;
 355
 356   Fake fake (42);
 357 #endif
 358
 359   add_item (&c, 23);            /* MI breakpoint here */
 360   add_item (&c, 72);
 361
 362 #ifdef MI
 363   add_item (&c, 1011);
 364   c.elements[0] = 1023;
 365   c.elements[0] = 2323;
 366
 367   add_item (&c2, 2222);
 368   add_item (&c2, 3333);
 369
 370   substruct_test ();
 371   do_nothing ();
 372 #endif
 373
 374   nstype.elements[0] = 7;
 375   nstype.elements[1] = 42;
 376   nstype.len = 2;
 377
 378   nstype2 = nstype;
 379
 380   eval_sub ();
 381
 382   bug_14741();      /* break to inspect struct and union */
 383   return 0;
 384 }