gdb/testsuite/gdb.cp/classes.cc

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 1993-2014 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 // Test various -*- C++ -*- things.
  19
  20 // ====================== basic C++ types  =======================
  21 bool            v_bool;
  22 bool            v_bool_array[2];
  23
  24 typedef struct fleep fleep;
  25 struct fleep { int a; } s;
  26
  27 // ====================== simple class structures  =======================
  28
  29 struct default_public_struct {
  30  // defaults to public:
  31   int a;
  32   int b;
  33 };
  34
  35 struct explicit_public_struct {
  36  public:
  37   int a;
  38   int b;
  39 };
  40
  41 struct protected_struct {
  42  protected:
  43   int a;
  44   int b;
  45 };
  46
  47 struct private_struct {
  48  private:
  49   int a;
  50   int b;
  51 };
  52
  53 struct mixed_protection_struct {
  54  public:
  55   int a;
  56   int b;
  57  private:
  58   int c;
  59   int d;
  60  protected:
  61   int e;
  62   int f;
  63  public:
  64   int g;
  65  private:
  66   int h;
  67  protected:
  68   int i;
  69 };
  70
  71 class public_class {
  72  public:
  73   int a;
  74   int b;
  75 };
  76
  77 class protected_class {
  78  protected:
  79   int a;
  80   int b;
  81 };
  82
  83 class default_private_class {
  84  // defaults to private:
  85   int a;
  86   int b;
  87 };
  88
  89 class explicit_private_class {
  90  private:
  91   int a;
  92   int b;
  93 };
  94
  95 class mixed_protection_class {
  96  public:
  97   int a;
  98   int b;
  99  private:
 100   int c;
 101   int d;
 102  protected:
 103   int e;
 104   int f;
 105  public:
 106   int g;
 107  private:
 108   int h;
 109  protected:
 110   int i;
 111 };
 112
 113 class const_vol_method_class {
 114 public:
 115   int a;
 116   int b;
 117   int foo (int &) const;
 118   int bar (int &) volatile;
 119   int baz (int &) const volatile;
 120 };
 121
 122 int const_vol_method_class::foo (int & ir) const
 123 {
 124   return ir + 3;
 125 }
 126 int const_vol_method_class::bar (int & ir) volatile
 127 {
 128   return ir + 4;
 129 }
 130 int const_vol_method_class::baz (int & ir) const volatile
 131 {
 132   return ir + 5;
 133 }
 134
 135 // ========================= simple inheritance ==========================
 136
 137 class A {
 138  public:
 139   int a;
 140   int x;
 141 };
 142
 143 A g_A;
 144
 145 class B : public A {
 146  public:
 147   int b;
 148   int x;
 149 };
 150
 151 B g_B;
 152
 153 class C : public A {
 154  public:
 155   int c;
 156   int x;
 157 };
 158
 159 C g_C;
 160
 161 class D : public B, public C {
 162  public:
 163   int d;
 164   int x;
 165 };
 166
 167 D g_D;
 168
 169 class E : public D {
 170  public:
 171   int e;
 172   int x;
 173 };
 174
 175 E g_E;
 176
 177 class class_with_anon_union
 178 {
 179  public:
 180   int one;
 181   union
 182   {
 183     int a;
 184     long b;
 185   };
 186 };
 187
 188 class_with_anon_union g_anon_union;
 189
 190 void inheritance2 (void)
 191 {
 192 }
 193
 194 void inheritance1 (void)
 195 {
 196   int ival;
 197   int *intp;
 198
 199   // {A::a, A::x}
 200
 201   g_A.A::a = 1;
 202   g_A.A::x = 2;
 203
 204   // {{A::a,A::x},B::b,B::x}
 205
 206   g_B.A::a = 3;
 207   g_B.A::x = 4;
 208   g_B.B::b = 5;
 209   g_B.B::x = 6;
 210
 211   // {{A::a,A::x},C::c,C::x}
 212
 213   g_C.A::a = 7;
 214   g_C.A::x = 8;
 215   g_C.C::c = 9;
 216   g_C.C::x = 10;
 217
 218   // {{{A::a,A::x},B::b,B::x},{{A::a,A::x},C::c,C::x},D::d,D::x}
 219
 220   // The following initialization code is non-portable, but allows us
 221   // to initialize all members of g_D until we can fill in the missing
 222   // initialization code with legal C++ code.
 223
 224   for (intp = (int *) &g_D, ival = 11;
 225        intp < ((int *) &g_D + sizeof (g_D) / sizeof (int));
 226        intp++, ival++)
 227     {
 228       *intp = ival;
 229     }
 230
 231   // Overlay the nonportable initialization with legal initialization.
 232
 233   // ????? = 11;  (g_D.A::a = 11; is ambiguous)
 234   // ????? = 12;  (g_D.A::x = 12; is ambiguous)
 235 /* djb 6-3-2000
 236
 237         This should take care of it. Rather than try to initialize using an ambiguous
 238         construct, use 2 unambiguous ones for each. Since the ambiguous a/x member is
 239         coming from C, and B, initialize D's C::a, and B::a, and D's C::x and B::x.
 240  */
 241   g_D.C::a = 15;
 242   g_D.C::x = 12;
 243   g_D.B::a = 11;
 244   g_D.B::x = 12;
 245   g_D.B::b = 13;
 246   g_D.B::x = 14;
 247   // ????? = 15;
 248   // ????? = 16;
 249   g_D.C::c = 17;
 250   g_D.C::x = 18;
 251   g_D.D::d = 19;
 252   g_D.D::x = 20;
 253
 254
 255   // {{{{A::a,A::x},B::b,B::x},{{A::a,A::x},C::c,C::x},D::d,D::x}},E::e,E::x}
 256
 257   // The following initialization code is non-portable, but allows us
 258   // to initialize all members of g_D until we can fill in the missing
 259   // initialization code with legal C++ code.
 260
 261   for (intp = (int *) &g_E, ival = 21;
 262        intp < ((int *) &g_E + sizeof (g_E) / sizeof (int));
 263        intp++, ival++)
 264   {
 265     *intp = ival;
 266   }
 267
 268   // Overlay the nonportable initialization with legal initialization.
 269
 270   // ????? = 21;  (g_E.A::a = 21; is ambiguous)
 271   // ????? = 22;  (g_E.A::x = 22; is ambiguous)
 272   g_E.B::b = 23;
 273   g_E.B::x = 24;
 274   // ????? = 25;
 275   // ????? = 26;
 276   g_E.C::c = 27;
 277   g_E.C::x = 28;
 278   g_E.D::d = 29;
 279   g_E.D::x = 30;
 280   g_E.E::e = 31;
 281   g_E.E::x = 32;
 282
 283   g_anon_union.one = 1;
 284   g_anon_union.a = 2;
 285
 286   inheritance2 ();
 287 }
 288
 289 // ======================== static member functions =====================
 290
 291 class Static {
 292 public:
 293   static void ii(int, int);
 294 };
 295 void Static::ii (int, int) { }
 296
 297 // ======================== virtual base classes=========================
 298
 299 class vA {
 300  public:
 301   int va;
 302   int vx;
 303 };
 304
 305 vA g_vA;
 306
 307 class vB : public virtual vA {
 308  public:
 309   int vb;
 310   int vx;
 311 };
 312
 313 vB g_vB;
 314
 315 class vC : public virtual vA {
 316  public:
 317   int vc;
 318   int vx;
 319 };
 320
 321 vC g_vC;
 322
 323 class vD : public virtual vB, public virtual vC {
 324  public:
 325   int vd;
 326   int vx;
 327 };
 328
 329 vD g_vD;
 330
 331 class vE : public virtual vD {
 332  public:
 333   int ve;
 334   int vx;
 335 };
 336
 337 vE g_vE;
 338
 339 void inheritance4 (void)
 340 {
 341 }
 342
 343 void inheritance3 (void)
 344 {
 345   int ival;
 346   int *intp;
 347
 348   // {vA::va, vA::vx}
 349
 350   g_vA.vA::va = 1;
 351   g_vA.vA::vx = 2;
 352
 353   // {{vA::va, vA::vx}, vB::vb, vB::vx}
 354
 355   g_vB.vA::va = 3;
 356   g_vB.vA::vx = 4;
 357   g_vB.vB::vb = 5;
 358   g_vB.vB::vx = 6;
 359
 360   // {{vA::va, vA::vx}, vC::vc, vC::vx}
 361
 362   g_vC.vA::va = 7;
 363   g_vC.vA::vx = 8;
 364   g_vC.vC::vc = 9;
 365   g_vC.vC::vx = 10;
 366
 367   // {{{{vA::va, vA::vx}, vB::vb, vB::vx}, vC::vc, vC::vx}, vD::vd,vD::vx}
 368
 369   g_vD.vA::va = 11;
 370   g_vD.vA::vx = 12;
 371   g_vD.vB::vb = 13;
 372   g_vD.vB::vx = 14;
 373   g_vD.vC::vc = 15;
 374   g_vD.vC::vx = 16;
 375   g_vD.vD::vd = 17;
 376   g_vD.vD::vx = 18;
 377
 378
 379   // {{{{{vA::va,vA::vx},vB::vb,vB::vx},vC::vc,vC::vx},vD::vd,vD::vx},vE::ve,vE::vx}
 380
 381   g_vD.vA::va = 19;
 382   g_vD.vA::vx = 20;
 383   g_vD.vB::vb = 21;
 384   g_vD.vB::vx = 22;
 385   g_vD.vC::vc = 23;
 386   g_vD.vC::vx = 24;
 387   g_vD.vD::vd = 25;
 388   g_vD.vD::vx = 26;
 389   g_vE.vE::ve = 27;
 390   g_vE.vE::vx = 28;
 391
 392   inheritance4 ();
 393 }
 394
 395 // ======================================================================
 396
 397 class Base1 {
 398  public:
 399   int x;
 400   Base1(int i) { x = i; }
 401   ~Base1 () { }
 402 };
 403
 404 typedef Base1 base1;
 405
 406 class Foo
 407 {
 408  public:
 409   int x;
 410   int y;
 411   static int st;
 412   Foo (int i, int j) { x = i; y = j; }
 413   int operator! ();
 414   operator int ();
 415   int times (int y);
 416 };
 417
 418 typedef Foo ByAnyOtherName;
 419
 420 class Bar : public Base1, public Foo {
 421  public:
 422   int z;
 423   Bar (int i, int j, int k) : Base1 (10*k), Foo (i, j) { z = k; }
 424 };
 425
 426 int Foo::operator! () { return !x; }
 427
 428 int Foo::times (int y) { return x * y; }
 429
 430 int Foo::st = 100;
 431
 432 Foo::operator int() { return x; }
 433
 434 ByAnyOtherName foo(10, 11);
 435 Bar bar(20, 21, 22);
 436
 437 class ClassWithEnum {
 438 public:
 439   enum PrivEnum { red, green, blue, yellow = 42 };
 440   PrivEnum priv_enum;
 441   int x;
 442 };
 443
 444 void enums2 (void)
 445 {
 446 }
 447
 448 /* classes.exp relies on statement order in this function for testing
 449    enumeration fields.  */
 450
 451 void enums1 ()
 452 {
 453   ClassWithEnum obj_with_enum;
 454   obj_with_enum.priv_enum = ClassWithEnum::red;
 455   obj_with_enum.x = 0;
 456   enums2 ();
 457   obj_with_enum.priv_enum = ClassWithEnum::green;
 458   obj_with_enum.x = 1;
 459 }
 460
 461 class ClassParam {
 462 public:
 463   int Aptr_a (A *a) { return a->a; }
 464   int Aptr_x (A *a) { return a->x; }
 465   int Aref_a (A &a) { return a.a; }
 466   int Aref_x (A &a) { return a.x; }
 467   int Aval_a (A a) { return a.a; }
 468   int Aval_x (A a) { return a.x; }
 469 };
 470
 471 ClassParam class_param;
 472
 473 class Contains_static_instance
 474 {
 475  public:
 476   int x;
 477   int y;
 478   Contains_static_instance (int i, int j) { x = i; y = j; }
 479   static Contains_static_instance null;
 480 };
 481
 482 Contains_static_instance Contains_static_instance::null(0,0);
 483 Contains_static_instance csi(10,20);
 484
 485 class Contains_nested_static_instance
 486 {
 487  public:
 488   class Nested
 489   {
 490    public:
 491     Nested(int i) : z(i) {}
 492     int z;
 493     static Contains_nested_static_instance xx;
 494   };
 495
 496   Contains_nested_static_instance(int i, int j) : x(i), y(j) {}
 497
 498   int x;
 499   int y;
 500
 501   static Contains_nested_static_instance null;
 502   static Nested yy;
 503 };
 504
 505 Contains_nested_static_instance Contains_nested_static_instance::null(0, 0);
 506 Contains_nested_static_instance::Nested Contains_nested_static_instance::yy(5);
 507 Contains_nested_static_instance
 508   Contains_nested_static_instance::Nested::xx(1,2);
 509 Contains_nested_static_instance cnsi(30,40);
 510
 511 typedef struct {
 512   int one;
 513   int two;
 514 } tagless_struct;
 515 tagless_struct v_tagless;
 516
 517 /* Try to get the compiler to allocate a class in a register.  */
 518 class small {
 519  public:
 520   int x;
 521   int method ();
 522 };
 523
 524 int
 525 small::method ()
 526 {
 527   return x + 5;
 528 }
 529
 530 void marker_reg1 () {}
 531
 532 int
 533 register_class ()
 534 {
 535   /* We don't call any methods for v, so gcc version cygnus-2.3.3-930220
 536      might put this variable in a register.  This is a lose, though, because
 537      it means that GDB can't call any methods for that variable.  */
 538   register small v;
 539
 540   int i;
 541
 542   /* Perform a computation sufficiently complicated that optimizing compilers
 543      won't optimized out the variable.  If some compiler constant-folds this
 544      whole loop, maybe using a parameter to this function here would help.  */
 545   v.x = 0;
 546   for (i = 0; i < 13; ++i)
 547     v.x += i;
 548   --v.x; /* v.x is now 77 */
 549   marker_reg1 ();
 550   return v.x + 5;
 551 }
 552
 553 void dummy()
 554 {
 555   v_bool = true;
 556   v_bool_array[0] = false;
 557   v_bool_array[1] = v_bool;
 558 }
 559
 560 void use_methods ()
 561 {
 562   /* Refer to methods so that they don't get optimized away. */
 563   int i;
 564   i = class_param.Aptr_a (&g_A);
 565   i = class_param.Aptr_x (&g_A);
 566   i = class_param.Aref_a (g_A);
 567   i = class_param.Aref_x (g_A);
 568   i = class_param.Aval_a (g_A);
 569   i = class_param.Aval_x (g_A);
 570
 571   base1 b (3);
 572 }
 573
 574
 575 int
 576 main()
 577 {
 578   dummy();
 579   inheritance1 ();
 580   inheritance3 ();
 581   enums1 ();
 582   register_class ();
 583
 584   /* FIXME: pmi gets optimized out.  Need to do some more computation with
 585      it or something.  (No one notices, because the test is xfail'd anyway,
 586      but that probably won't always be true...).  */
 587   int Foo::* pmi = &Foo::y;
 588
 589   /* Make sure the AIX linker doesn't remove the variable.  */
 590   v_tagless.one = 5;
 591
 592   use_methods ();
 593
 594   return foo.*pmi;
 595 }
 596
 597 /* Create an instance for some classes, otherwise they get optimized away.  */
 598
 599 default_public_struct default_public_s;
 600 explicit_public_struct explicit_public_s;
 601 protected_struct protected_s;
 602 private_struct private_s;
 603 mixed_protection_struct mixed_protection_s;
 604 public_class public_c;
 605 protected_class protected_c;
 606 default_private_class default_private_c;
 607 explicit_private_class explicit_private_c;
 608 mixed_protection_class mixed_protection_c;