gdb/testsuite/gdb.base/pointers.exp

   1 # Copyright 1998, 1999, 2000, 2007, 2008 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Please email any bugs, comments, and/or additions to this file to:
  17 # bug-gdb@prep.ai.mit.edu
  18
  19 # This file was written by Elena Zannoni (ezannoni@cygnus.com)
  20
  21 # This file is part of the gdb testsuite
  22 #
  23 # tests for pointer arithmetic and pointer dereferencing
  24 # with integer type variables and pointers to integers
  25 #
  26
  27 if $tracelevel then {
  28         strace $tracelevel
  29         }
  30
  31 #
  32 # test running programs
  33 #
  34 set prms_id 0
  35 set bug_id 0
  36
  37 set testfile "pointers"
  38 set srcfile ${testfile}.c
  39 set binfile ${objdir}/${subdir}/${testfile}
  40
  41 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
  42      untested pointers.exp
  43      return -1
  44     }
  45
  46 if [get_compiler_info ${binfile}] {
  47     return -1;
  48 }
  49
  50 gdb_exit
  51 gdb_start
  52 gdb_reinitialize_dir $srcdir/$subdir
  53 gdb_load ${binfile}
  54
  55
  56 #
  57 # set it up at a breakpoint so we can play with the variable values
  58 #
  59
  60 if ![runto_main] then {
  61     perror "couldn't run to breakpoint"
  62     continue
  63 }
  64
  65 gdb_test "next " "more_code.*;" "continuing after dummy()"
  66
  67
  68 #
  69 # let's see if gdb catches some illegal operations on pointers
  70 #
  71 # I must comment these out because strict type checking is not
  72 # supported in this version of GDB. I do not really know
  73 # what the expected gdb reply is.
  74 #
  75
  76 #send_gdb "print v_int_pointer2 = &v_int_pointer\n"
  77 #gdb_expect {
  78 #    -re ".*.*$gdb_prompt $" {
  79 #        pass "illegal pointer assignment rejected"
  80 #      }
  81 #    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
  82 #    timeout           { fail "(timeout) illegal pointer assignment rejected" }
  83 #  }
  84
  85
  86 #send_gdb "print v_unsigned_int_pointer = &v_int\n"
  87 #gdb_expect {
  88 #    -re ".*.*$gdb_prompt $" {
  89 #        pass "illegal pointer assignment rejected"
  90 #      }
  91 #    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
  92 #    timeout           { fail "(timeout) ilegal pointer assignment rejected" }
  93 #  }
  94
  95 #send_gdb "print v_unsigned_int_pointer == v_double_pointer\n"
  96 #gdb_expect {
  97 #    -re ".*.*$gdb_prompt $" {
  98 #        pass "illegal pointer operation (+) rejected"
  99 #      }
 100 #    -re ".*$gdb_prompt $" { fail "illegal pointer operation (+) rejected" }
 101 #    timeout           { fail "(timeout) illegal pointer operation (+) rejected" }
 102 #  }
 103
 104
 105 #send_gdb "print v_unsigned_int_pointer * v_double_pointer\n"
 106 #gdb_expect {
 107 #    -re ".*Argument to arithmetic operation not a number or boolean.*$gdb_prompt $" {
 108 #        pass "illegal pointer operation (*) rejected"
 109 #      }
 110 #    -re ".*$gdb_prompt $" { fail "illegal pointer operation (*) rejected" }
 111 #    timeout           { fail "(timeout) illegal pointer operation (*) rejected" }
 112 #  }
 113
 114
 115 #send_gdb "print v_unsigned_int_pointer = v_double_pointer\n"
 116 #gdb_expect {
 117 #    -re ".*.*$gdb_prompt $" {
 118 #        pass "ilegal pointer assignment rejected"
 119 #      }
 120 #    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
 121 #    timeout           { fail "(timeout) illegal pointer assignment rejected" }
 122 #  }
 123
 124
 125 #send_gdb "print v_unsigned_int_pointer = v_unsigned_int\n"
 126 #gdb_expect {
 127 #    -re ".*.*$gdb_prompt $" {
 128 #        pass "illegal pointer assignment rejected"
 129 #      }
 130 #    -re ".*$gdb_prompt $" { fail "illegal pointer assignment rejected" }
 131 #    timeout           { fail "(timeout) illegal pointer assignment rejected" }
 132 #  }
 133
 134 gdb_test "set variable v_int_pointer=&v_int_array\[0\]" "" "set pointer to beginning of array"
 135 gdb_test "set variable v_int_pointer2=&v_int_array\[1\]" "" "set pointer to end of array"
 136
 137
 138 send_gdb "print *v_int_pointer\n"
 139 gdb_expect {
 140     -re ".*= 6.*$gdb_prompt $" {
 141         pass "print object pointed to"
 142       }
 143     -re ".*$gdb_prompt $" { fail "print object pointed to" }
 144     timeout           { fail "(timeout) print object pointed to" }
 145   }
 146
 147 send_gdb "print *v_int_pointer2\n"
 148 gdb_expect {
 149     -re ".*= 18.*$gdb_prompt $" {
 150         pass "print object pointed to"
 151       }
 152     -re ".*$gdb_prompt $" { fail "print object pointed to" }
 153     timeout           { fail "(timeout) print object pointed to" }
 154   }
 155
 156
 157 send_gdb "print v_int_pointer == v_int_pointer2\n"
 158 gdb_expect {
 159     -re ".*= $false.*$gdb_prompt $" {
 160         pass "pointer1==pointer2"
 161       }
 162     -re ".*$gdb_prompt $" { fail "pointer1==pointer2" }
 163     timeout           { fail "(timeout) pointer1==pointer2" }
 164   }
 165
 166 send_gdb "print v_int_pointer != v_int_pointer2\n"
 167 gdb_expect {
 168     -re ".*= $true.*$gdb_prompt $" {
 169         pass "pointer1!=pointer2"
 170       }
 171     -re ".*$gdb_prompt $" { fail "pointer1!=pointer2" }
 172     timeout           { fail "(timeout) pointer1!=pointer2" }
 173   }
 174
 175
 176 send_gdb "print v_int_pointer <= v_int_pointer2\n"
 177 gdb_expect {
 178     -re ".*= $true.*$gdb_prompt $" {
 179         pass "pointer1<=pointer2"
 180       }
 181     -re ".*$gdb_prompt $" { fail "pointer1<=pointer2" }
 182     timeout           { fail "(timeout) pointer1<=pointer2" }
 183   }
 184
 185
 186 send_gdb "print v_int_pointer >= v_int_pointer2\n"
 187 gdb_expect {
 188     -re ".*= $false.*$gdb_prompt $" {
 189         pass "pointer1>=pointer2"
 190       }
 191     -re ".*$gdb_prompt $" { fail "pointer1>=pointer2" }
 192     timeout           { fail "(timeout) pointer1>=pointer2" }
 193   }
 194
 195
 196 send_gdb "print v_int_pointer < v_int_pointer2\n"
 197 gdb_expect {
 198     -re ".*= $true.*$gdb_prompt $" {
 199         pass "pointer1<pointer2"
 200       }
 201     -re ".*$gdb_prompt $" { fail "pointer1<pointer2" }
 202     timeout           { fail "(timeout) pointer1<pointer2" }
 203   }
 204
 205 send_gdb "print v_int_pointer > v_int_pointer2\n"
 206 gdb_expect {
 207     -re ".*= $false.*$gdb_prompt $" {
 208         pass "pointer1>pointer2"
 209       }
 210     -re ".*$gdb_prompt $" { fail "pointer1>pointer2" }
 211     timeout           { fail "(timeout) pointer1>pointer2" }
 212   }
 213
 214
 215 gdb_test "set variable y = *v_int_pointer++" "" "set y = *v_int_pointer++"
 216 send_gdb "print y\n"
 217 gdb_expect {
 218     -re ".*= 6.*$gdb_prompt $" {
 219         send_gdb "print *v_int_pointer\n"
 220         gdb_expect {
 221              -re ".*= 18.*$gdb_prompt $" {
 222                  pass "pointer assignment and increment"
 223                }
 224              -re ".*$gdb_prompt $" { fail "pointer assignment and increment" }
 225              timeout           { fail "(timeout) pointer assignment and increment" }
 226          }
 227          }
 228     -re ".*$gdb_prompt $" { fail "pointer assignment and increment" }
 229     timeout           { fail "(timeout) pointer assignment and increment" }
 230   }
 231
 232
 233
 234
 235 gdb_test "set variable y = *--v_int_pointer2" "" "set y = *--v_int_pointer2"
 236 send_gdb "print y\n"
 237 gdb_expect {
 238     -re ".*= 6.*$gdb_prompt $" {
 239         send_gdb "print *v_int_pointer2\n"
 240         gdb_expect {
 241              -re ".*= 6.*$gdb_prompt $" {
 242                  pass "pointer decrement and assignment"
 243                }
 244              -re ".*$gdb_prompt $" { fail "pointer decrement and assignment" }
 245              timeout           { fail "(timeout) pointer decrement and assignment" }
 246          }
 247          }
 248     -re ".*$gdb_prompt $" { fail "pointer decrement and assignment" }
 249     timeout           { fail "(timeout) pointer decrement and assignment" }
 250   }
 251
 252 gdb_test "set variable y =v_int_pointer-v_int_pointer2" "" "set y =v_int_pointer-v_int_pointer2"
 253 send_gdb "print y\n"
 254 gdb_expect {
 255     -re ".*= 1.*$gdb_prompt $" {
 256         pass "pointer1-pointer2"
 257       }
 258     -re ".*$gdb_prompt $" { fail "pointer1-pointer2" }
 259     timeout           { fail "(timeout) pointer1-pointer2" }
 260   }
 261
 262 gdb_test "set variable v_int_pointer=v_int_array" "" "set v_int_pointer=v_int_array"
 263 send_gdb "print *v_int_pointer\n"
 264 gdb_expect {
 265     -re ".*= 6.*$gdb_prompt $" {
 266         pass "print array element through pointer"
 267       }
 268     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 269     timeout           { fail "(timeout) print array element through pointer" }
 270   }
 271
 272
 273 send_gdb "print *(v_int_pointer+1)\n"
 274 gdb_expect {
 275     -re ".*= 18.*$gdb_prompt $" {
 276         pass "print array element through pointer"
 277       }
 278     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 279     timeout           { fail "(timeout) print array element through pointer" }
 280   }
 281
 282 # test print elements of array through pointers
 283
 284 send_gdb "print (*rptr)\[0\]\n"
 285 gdb_expect {
 286     -re ".*= 0.*$gdb_prompt $" {
 287         pass "print array element through pointer"
 288       }
 289     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 290     timeout           { fail "(timeout) print array element through pointer" }
 291   }
 292
 293 send_gdb "print (*rptr)\[1\]\n"
 294 gdb_expect {
 295     -re ".*= 1.*$gdb_prompt $" {
 296         pass "print array element through pointer"
 297       }
 298     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 299     timeout           { fail "(timeout) print array element through pointer" }
 300   }
 301
 302
 303 send_gdb "print (*rptr)\[2\]\n"
 304 gdb_expect {
 305     -re ".*= 2.*$gdb_prompt $" {
 306         pass "print array element through pointer"
 307       }
 308     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 309     timeout           { fail "(timeout) print array element through pointer" }
 310   }
 311
 312 gdb_test "set variable rptr = rptr+1" "" "increment rptr"
 313
 314 send_gdb "print (*rptr)\[0\]\n"
 315 gdb_expect {
 316     -re ".*= 3.*$gdb_prompt $" {
 317         pass "print array element through pointer"
 318       }
 319     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 320     timeout           { fail "(timeout) print array element through pointer" }
 321   }
 322
 323
 324 send_gdb "print (*rptr)\[1\]\n"
 325 gdb_expect {
 326     -re ".*= 4.*$gdb_prompt $" {
 327         pass "print array element through pointer"
 328       }
 329     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 330     timeout           { fail "(timeout) print array element through pointer" }
 331   }
 332
 333
 334 send_gdb "print (*rptr)\[2\]\n"
 335 gdb_expect {
 336     -re ".*= 5.*$gdb_prompt $" {
 337         pass "print array element through pointer"
 338       }
 339     -re ".*$gdb_prompt $" { fail "print array element through pointer" }
 340     timeout           { fail "(timeout) print array element through pointer" }
 341   }
 342
 343
 344 send_gdb "print *( *(matrix+1) +2)\n"
 345 gdb_expect {
 346     -re ".*= 5.*$gdb_prompt $" {
 347         pass "print array element w/ pointer arithmetic"
 348       }
 349     -re ".*$gdb_prompt $" { fail "print array element w/ pointer arithemtic" }
 350     timeout           { fail "(timeout) print array element w/ pointer arithmetic" }
 351   }
 352
 353
 354 send_gdb "print **ptr_to_ptr_to_float\n"
 355 gdb_expect {
 356     -re ".*= 100.*$gdb_prompt $" {
 357         pass "print through ptr to ptr"
 358       }
 359     -re ".*$gdb_prompt $" { fail "print through ptr to ptr" }
 360     timeout           { fail "(timeout) print through ptr to ptr" }
 361   }
 362
 363 # tests for pointers
 364 # with elementary type variables and pointers.
 365 #
 366
 367 send_gdb "break marker1\n" ; gdb_expect -re ".*$gdb_prompt $"
 368
 369 send_gdb "cont\n"
 370 gdb_expect {
 371     -re "Break.* marker1 \\(\\) at .*:$decimal.*$gdb_prompt $" {
 372         pass "continue to marker1"
 373         send_gdb "up\n"
 374         gdb_expect {
 375             -re ".*more_code.*$gdb_prompt $" {
 376                 pass "up from marker1"
 377             }
 378             -re ".*$gdb_prompt $" {
 379                 fail "up from marker1"
 380             }
 381             timeout { fail "up from marker1 (timeout)" }
 382         }
 383     }
 384     -re "$gdb_prompt $" {
 385         fail "continue to marker1"
 386     }
 387     timeout {
 388         fail "continue to marker1 (timeout)"
 389     }
 390 }
 391
 392
 393 send_gdb "print *pUC\n"
 394 gdb_expect {
 395     -re ".\[0-9\]* = 21 \'.025\'.*$gdb_prompt $" {
 396         pass "print value of *pUC"
 397       }
 398     -re ".*$gdb_prompt $" { fail "print value of *pUC" }
 399     timeout           { fail "(timeout) print value of *pUC" }
 400   }
 401
 402
 403 send_gdb "ptype pUC\n"
 404 gdb_expect {
 405     -re "type = unsigned char \\*.*$gdb_prompt $"  { pass "ptype pUC" }
 406     -re ".*$gdb_prompt $"   {  fail "ptype pUC" }
 407     timeout             { fail "(timeout) ptype pUC" }
 408 }
 409
 410 send_gdb "print *pS\n"
 411 gdb_expect {
 412     -re ".\[0-9\]* = -14.*$gdb_prompt $" {
 413         pass "print value of *pS"
 414       }
 415     -re ".*$gdb_prompt $" { fail "print value of *pS" }
 416     timeout           { fail "(timeout) print value of *pS" }
 417   }
 418
 419
 420 send_gdb "ptype pS\n"
 421 gdb_expect {
 422     -re "type = short \\*.*$gdb_prompt $"  { pass "ptype pS" }
 423     -re "type = short int \\*.*$gdb_prompt $"  { pass "ptype pS" }
 424     -re ".*$gdb_prompt $"   {  fail "ptype pS" }
 425     timeout             { fail "(timeout) ptype pS" }
 426 }
 427
 428 send_gdb "print *pUS\n"
 429 gdb_expect {
 430     -re ".\[0-9\]* = 7.*$gdb_prompt $" {
 431         pass "print value of *pUS"
 432       }
 433     -re ".*$gdb_prompt $" { fail "print value of *pUS" }
 434     timeout           { fail "(timeout) print value of *pUS" }
 435   }
 436
 437
 438 send_gdb "ptype pUS\n"
 439 gdb_expect {
 440     -re "type = unsigned short \\*.*$gdb_prompt $"  { pass "ptype pUS" }
 441     -re "type = short unsigned int \\*.*$gdb_prompt $"  { pass "ptype pUS" }
 442     -re ".*$gdb_prompt $"   {  fail "ptype pUS" }
 443     timeout             { fail "(timeout) ptype pUS" }
 444 }
 445
 446 send_gdb "print *pI\n"
 447 gdb_expect {
 448     -re ".\[0-9\]* = 102.*$gdb_prompt $" {
 449         pass "print value of *pI"
 450       }
 451     -re ".*$gdb_prompt $" { fail "print value of *pI" }
 452     timeout           { fail "(timeout) print value of *pI" }
 453   }
 454
 455
 456 send_gdb "ptype pI\n"
 457 gdb_expect {
 458     -re "type = int \\*.*$gdb_prompt $"  { pass "ptype pI" }
 459     -re ".*$gdb_prompt $"   {  fail "ptype pI" }
 460     timeout             { fail "(timeout) ptype pI" }
 461 }
 462
 463 send_gdb "print *pUI\n"
 464 gdb_expect {
 465     -re ".\[0-9\]* = 1002.*$gdb_prompt $" {
 466         pass "print value of *pUI"
 467       }
 468     -re ".*$gdb_prompt $" { fail "print value of *pUI" }
 469     timeout           { fail "(timeout) print value of *pUI" }
 470   }
 471
 472
 473 send_gdb "ptype pUI\n"
 474 gdb_expect {
 475     -re "type = unsigned int \\*.*$gdb_prompt $"  { pass "ptype pUI" }
 476     -re ".*$gdb_prompt $"   {  fail "ptype pUI" }
 477     timeout             { fail "(timeout) ptype pUI" }
 478 }
 479
 480 send_gdb "print *pL\n"
 481 gdb_expect {
 482     -re ".\[0-9\]* = -234.*$gdb_prompt $" {
 483         pass "print value of *pL"
 484       }
 485     -re ".*$gdb_prompt $" { fail "print value of *pL" }
 486     timeout           { fail "(timeout) print value of *pL" }
 487   }
 488
 489
 490 send_gdb "ptype pL\n"
 491 gdb_expect {
 492     -re "type = long \\*.*$gdb_prompt $"  { pass "ptype pL" }
 493     -re "type = long int \\*.*$gdb_prompt $"  { pass "ptype pL" }
 494     -re ".*$gdb_prompt $"   {  fail "ptype pL" }
 495     timeout             { fail "(timeout) ptype pL" }
 496 }
 497
 498 send_gdb "print *pUL\n"
 499 gdb_expect {
 500     -re ".\[0-9\]* = 234.*$gdb_prompt $" {
 501         pass "print value of *pUL"
 502       }
 503     -re ".*$gdb_prompt $" { fail "print value of *pUL" }
 504     timeout           { fail "(timeout) print value of *pUL" }
 505   }
 506
 507
 508 send_gdb "ptype pUL\n"
 509 gdb_expect {
 510     -re "type = unsigned long \\*.*$gdb_prompt $"  { pass "ptype pUL" }
 511     -re "type = long unsigned int \\*.*$gdb_prompt $"  { pass "ptype pUL" }
 512     -re ".*$gdb_prompt $"   {  fail "ptype pUL" }
 513     timeout             { fail "(timeout) ptype pUL" }
 514 }
 515
 516 send_gdb "print *pF\n"
 517 gdb_expect {
 518     -re ".\[0-9\]* = 1.2\[0-9\]*e\\+10.*$gdb_prompt $" {
 519         pass "print value of *pF"
 520       }
 521     -re ".*$gdb_prompt $" { fail "print value of *pF" }
 522     timeout           { fail "(timeout) print value of *pF" }
 523   }
 524
 525
 526 send_gdb "ptype pF\n"
 527 gdb_expect {
 528     -re "type = float \\*.*$gdb_prompt $"  { pass "ptype pF" }
 529     -re ".*$gdb_prompt $"   {  fail "ptype pF" }
 530     timeout             { fail "(timeout) ptype pF" }
 531 }
 532
 533 send_gdb "print *pD\n"
 534 gdb_expect {
 535     -re ".\[0-9\]* = -1.2\[0-9\]*e\\-37.*$gdb_prompt $" {
 536         pass "print value of *pD"
 537       }
 538     -re ".*$gdb_prompt $" { fail "print value of *pD" }
 539     timeout           { fail "(timeout) print value of *pD" }
 540   }
 541
 542
 543 send_gdb "ptype pD\n"
 544 gdb_expect {
 545     -re "type = double \\*.*$gdb_prompt $"  { pass "ptype pD" }
 546     -re ".*$gdb_prompt $"   {  fail "ptype pD" }
 547     timeout             { fail "(timeout) ptype pD" }
 548 }
 549
 550 send_gdb "print ******ppppppC\n"
 551 gdb_expect {
 552     -re ".\[0-9\]* = 65 \'A\'.*$gdb_prompt $" {
 553         pass "print value of ******ppppppC"
 554       }
 555     -re ".*$gdb_prompt $" { fail "print value of ******ppppppC" }
 556     timeout           { fail "(timeout) print value of ******ppppppC" }
 557   }
 558
 559
 560 send_gdb "ptype pC\n"
 561 gdb_expect {
 562     -re "type = char \\*.*$gdb_prompt $"  { pass "ptype pC" }
 563     -re ".*$gdb_prompt $"   {  fail "ptype pC" }
 564     timeout             { fail "(timeout) ptype pC" }
 565 }
 566
 567 send_gdb "ptype ppC\n"
 568 gdb_expect {
 569     -re "type = char \\*\\*.*$gdb_prompt $"  { pass "ptype ppC" }
 570     -re ".*$gdb_prompt $"   {  fail "ptype ppC" }
 571     timeout             { fail "(timeout) ptype ppC" }
 572 }
 573
 574 send_gdb "ptype pppC\n"
 575 gdb_expect {
 576     -re "type = char \\*\\*\\*.*$gdb_prompt $"  { pass "ptype pppC" }
 577     -re ".*$gdb_prompt $"   {  fail "ptype pppC" }
 578     timeout             { fail "(timeout) ptype pppC" }
 579 }
 580
 581 send_gdb "ptype ppppC\n"
 582 gdb_expect {
 583     -re "type = char \\*\\*\\*\\*.*$gdb_prompt $"  { pass "ptype ppppC" }
 584     -re ".*$gdb_prompt $"   {  fail "ptype ppppC" }
 585     timeout             { fail "(timeout) ptype ppppC" }
 586 }
 587
 588 send_gdb "ptype pppppC\n"
 589 gdb_expect {
 590     -re "type = char \\*\\*\\*\\*\\*.*$gdb_prompt $"  { pass "ptype pppppC" }
 591     -re ".*$gdb_prompt $"   {  fail "ptype pppppC" }
 592     timeout             { fail "(timeout) ptype pppppC" }
 593 }
 594
 595 send_gdb "ptype ppppppC\n"
 596 gdb_expect {
 597     -re "type = char \\*\\*\\*\\*\\*\\*.*$gdb_prompt $"  { pass "ptype ppppppC" }
 598     -re ".*$gdb_prompt $"   {  fail "ptype ppppppC" }
 599     timeout             { fail "(timeout) ptype ppppppC" }
 600 }
 601