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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2008-2017 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 #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 substruct {
 116   int a;
 117   int b;
 118 };
 119
 120 struct outerstruct {
 121   struct substruct s;
 122   int x;
 123 };
 124
 125 struct outerstruct
 126 substruct_test (void)
 127 {
 128   struct outerstruct outer;
 129   outer.s.a = 0;
 130   outer.s.b = 0;
 131   outer.x = 0;
 132
 133   outer.s.a = 3;                /* MI outer breakpoint here */
 134
 135   return outer;
 136 }
 137
 138 typedef struct string_repr
 139 {
 140   struct whybother
 141   {
 142     const char *contents;
 143   } whybother;
 144 } string;
 145
 146 /* This lets us avoid malloc.  */
 147 int array[100];
 148 int narray[10];
 149
 150 struct justchildren
 151 {
 152   int len;
 153   int *elements;
 154 };
 155
 156 typedef struct justchildren nostring_type;
 157
 158 struct memory_error
 159 {
 160   const char *s;
 161 };
 162
 163 struct container
 164 {
 165   string name;
 166   int len;
 167   int *elements;
 168 };
 169
 170 typedef struct container zzz_type;
 171
 172 string
 173 make_string (const char *s)
 174 {
 175   string result;
 176   result.whybother.contents = s;
 177   return result;
 178 }
 179
 180 zzz_type
 181 make_container (const char *s)
 182 {
 183   zzz_type result;
 184
 185   result.name = make_string (s);
 186   result.len = 0;
 187   result.elements = 0;
 188
 189   return result;
 190 }
 191
 192 void
 193 add_item (zzz_type *c, int val)
 194 {
 195   if (c->len == 0)
 196     c->elements = array;
 197   c->elements[c->len] = val;
 198   ++c->len;
 199 }
 200
 201 void
 202 set_item(zzz_type *c, int i, int val)
 203 {
 204   if (i < c->len)
 205     c->elements[i] = val;
 206 }
 207
 208 void init_s(struct s *s, int a)
 209 {
 210   s->a = a;
 211   s->b = &s->a;
 212 }
 213
 214 void init_ss(struct ss *s, int a, int b)
 215 {
 216   init_s(&s->a, a);
 217   init_s(&s->b, b);
 218 }
 219
 220 void do_nothing(void)
 221 {
 222   int c;
 223
 224   c = 23;                       /* Another MI breakpoint */
 225 }
 226
 227 struct nullstr
 228 {
 229   char *s;
 230 };
 231
 232 struct string_repr string_1 = { { "one" } };
 233 struct string_repr string_2 = { { "two" } };
 234
 235 int
 236 eval_func (int p1, int p2, int p3, int p4, int p5, int p6, int p7, int p8)
 237 {
 238   return p1;
 239 }
 240
 241 static void
 242 eval_sub (void)
 243 {
 244   struct eval_type_s { int x; } eval1 = { 1 }, eval2 = { 2 }, eval3 = { 3 },
 245                                 eval4 = { 4 }, eval5 = { 5 }, eval6 = { 6 },
 246                                 eval7 = { 7 }, eval8 = { 8 }, eval9 = { 9 };
 247
 248   eval1.x++; /* eval-break */
 249 }
 250
 251 static void
 252 bug_14741()
 253 {
 254   zzz_type c = make_container ("bug_14741");
 255   add_item (&c, 71);
 256   set_item(&c, 0, 42); /* breakpoint bug 14741 */
 257   set_item(&c, 0, 5);
 258 }
 259
 260 /* Some typedefs/variables for checking that GDB doesn't lose typedefs
 261    when looking for a printer.  */
 262 typedef int int_type;
 263 typedef int_type int_type2;
 264
 265 int an_int = -1;
 266 int_type an_int_type = 1;
 267 int_type2 an_int_type2 = 2;
 268
 269 int
 270 main ()
 271 {
 272   struct ss  ss;
 273   struct ss  ssa[2];
 274   struct arraystruct arraystruct;
 275   string x = make_string ("this is x");
 276   zzz_type c = make_container ("container");
 277   zzz_type c2 = make_container ("container2");
 278   const struct string_repr cstring = { { "const string" } };
 279   /* Clearing by being `static' could invoke an other GDB C++ bug.  */
 280   struct nullstr nullstr;
 281   nostring_type nstype, nstype2;
 282   struct memory_error me;
 283   struct ns ns, ns2;
 284   struct lazystring estring, estring2, estring3;
 285   struct hint_error hint_error;
 286   struct children_as_list children_as_list;
 287
 288   nstype.elements = narray;
 289   nstype.len = 0;
 290
 291   me.s = "blah";
 292
 293   init_ss(&ss, 1, 2);
 294   init_ss(ssa+0, 3, 4);
 295   init_ss(ssa+1, 5, 6);
 296   memset (&nullstr, 0, sizeof nullstr);
 297
 298   arraystruct.y = 7;
 299   init_s (&arraystruct.x[0], 23);
 300   init_s (&arraystruct.x[1], 24);
 301
 302   ns.null_str = "embedded\0null\0string";
 303   ns.length = 20;
 304
 305   /* Make a "corrupted" string.  */
 306   ns2.null_str = NULL;
 307   ns2.length = 20;
 308
 309   estring.lazy_str = "embedded x\201\202\203\204";
 310   estring.len = -1;
 311
 312   /* Incomplete UTF-8, but ok Latin-1.  */
 313   estring2.lazy_str = "embedded x\302";
 314   estring2.len = -1;
 315
 316   estring3.lazy_str = NULL;
 317   estring3.len = 42;
 318
 319 #ifdef __cplusplus
 320   S cps;
 321
 322   cps.zs = 7;
 323   init_s(&cps, 8);
 324
 325   SS cpss;
 326   cpss.zss = 9;
 327   init_s(&cpss.s, 10);
 328
 329   SS cpssa[2];
 330   cpssa[0].zss = 11;
 331   init_s(&cpssa[0].s, 12);
 332   cpssa[1].zss = 13;
 333   init_s(&cpssa[1].s, 14);
 334
 335   SSS sss(15, cps);
 336
 337   SSS& ref (sss);
 338
 339   Derived derived;
 340
 341   Fake fake (42);
 342 #endif
 343
 344   add_item (&c, 23);            /* MI breakpoint here */
 345   add_item (&c, 72);
 346
 347 #ifdef MI
 348   add_item (&c, 1011);
 349   c.elements[0] = 1023;
 350   c.elements[0] = 2323;
 351
 352   add_item (&c2, 2222);
 353   add_item (&c2, 3333);
 354
 355   substruct_test ();
 356   do_nothing ();
 357 #endif
 358
 359   nstype.elements[0] = 7;
 360   nstype.elements[1] = 42;
 361   nstype.len = 2;
 362
 363   nstype2 = nstype;
 364
 365   eval_sub ();
 366
 367   bug_14741();      /* break to inspect struct and union */
 368   return 0;
 369 }