gdb/testsuite/gdb.mi/mi-var-cmd.exp

   1 # Copyright 1999, 2000, 2001, 2002, 2004, 2005, 2007
   2 # Free Software Foundation, Inc.
   3 #
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   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 # Test essential Machine interface (MI) operations
  19 #
  20 # Verify that, using the MI, we can create, update, delete variables.
  21 #
  22
  23
  24 load_lib mi-support.exp
  25 set MIFLAGS "-i=mi"
  26
  27 gdb_exit
  28 if [mi_gdb_start] {
  29     continue
  30 }
  31
  32 set testfile "var-cmd"
  33 set srcfile ${testfile}.c
  34 set binfile ${objdir}/${subdir}/${testfile}
  35 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DFAKEARGV}] != "" } {
  36     untested mi-var-cmd.exp
  37     return -1
  38 }
  39
  40 mi_delete_breakpoints
  41 mi_gdb_reinitialize_dir $srcdir/$subdir
  42 mi_gdb_load ${binfile}
  43
  44
  45 #####                   #####
  46 #                           #
  47 #  Variable Creation tests  #
  48 #                           #
  49 #####                   #####
  50
  51 # Test:  c_variable-1.1
  52 # Desc:  Create global variable
  53
  54 mi_gdb_test "111-var-create global_simple * global_simple" \
  55         "111\\^done,name=\"global_simple\",numchild=\"6\",value=\".*\",type=\"simpleton\"" \
  56         "create global variable"
  57
  58 # Test: c_variable-1.2
  59 # Desc: Create non-existent variable
  60
  61 mi_gdb_test "112-var-create bogus_unknown_variable * bogus_unknown_variable" \
  62         "&\"mi_cmd_var_create: unable to create variable object\\\\n\".*112\\^error,msg=\"mi_cmd_var_create: unable to create variable object\"" \
  63         "create non-existent variable"
  64
  65 # Test: c_variable-1.3
  66 # Desc: Create out of scope variable
  67
  68 mi_gdb_test "113-var-create argc * argc" \
  69         "&\"mi_cmd_var_create: unable to create variable object\\\\n\".*113\\^error,msg=\"mi_cmd_var_create: unable to create variable object\"" \
  70         "create out of scope variable"
  71
  72 mi_runto do_locals_tests
  73
  74 # Test: c_variable-1.4
  75 # Desc: create local variables
  76
  77 mi_create_varobj linteger linteger "create local variable linteger"
  78
  79 mi_create_varobj lpinteger lpinteger "create local variable lpinteger"
  80
  81 mi_create_varobj lcharacter lcharacter "create local variable lcharacter"
  82
  83 mi_create_varobj lpcharacter lpcharacter "create local variable lpcharacter"
  84
  85 mi_create_varobj llong llong "create local variable llong"
  86
  87 mi_create_varobj lplong lplong "create local variable lplong"
  88
  89 mi_create_varobj lfloat lfloat "create local variable lfloat"
  90
  91 mi_create_varobj lpfloat lpfloat "create local variable lpfloat"
  92
  93 mi_create_varobj ldouble ldouble "create local variable ldouble"
  94
  95 mi_create_varobj lpdouble lpdouble "create local variable lpdouble"
  96
  97 mi_create_varobj lsimple lsimple "create local variable lsimple"
  98
  99 mi_create_varobj lpsimple lpsimple "create local variable lpsimple"
 100
 101 mi_create_varobj func func "create local variable func"
 102
 103 # Test: c_variable-1.5
 104 # Desc: create lsimple.character
 105 mi_create_varobj lsimple.character lsimple.character "create lsimple.character"
 106
 107 # Test: c_variable-1.6
 108 # Desc: create lpsimple->integer
 109 mi_create_varobj lsimple->integer lsimple->integer "create lsimple->integer"
 110
 111 # Test: c_variable-1.7
 112 # Desc: ceate lsimple.integer
 113 mi_create_varobj lsimple.integer lsimple.integer "create lsimple->integer"
 114
 115 # Test: c_variable-1.9
 116 # Desc: create type name
 117 #    Type names (like int, long, etc..) are all proper expressions to gdb.
 118 #    make sure variable code does not allow users to create variables, though.
 119 mi_gdb_test "-var-create int * int" \
 120         "&\"Attempt to use a type name as an expression.\\\\n\".*&\"mi_cmd_var_create: unable to create variable object\\\\n\".*\\^error,msg=\"mi_cmd_var_create: unable to create variable object\"" \
 121         "create int"
 122
 123
 124 #####             #####
 125 #                     #
 126 # Value changed tests #
 127 #                     #
 128 #####             #####
 129
 130 # Test: c_variable-2.1
 131 # Desc: check whether values changed at do_block_tests
 132 mi_gdb_test "-var-update *" \
 133         "\\^done,changelist=\\\[\\\]" \
 134         "update all vars"
 135
 136 # Step over "linteger = 1234;"
 137 set line_dlt_linteger [gdb_get_line_number "lpinteger = &linteger;"]
 138 mi_step_to "do_locals_tests" "" "var-cmd.c" $line_dlt_linteger "step at do_locals_test"
 139
 140 # Test: c_variable-2.2
 141 # Desc: check whether only linteger changed values
 142 mi_gdb_test "-var-update *" \
 143         "\\^done,changelist=\\\[\{name=\"linteger\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 144         "update all vars: linteger changed"
 145
 146 # Step over "lpinteger = &linteger;"
 147 mi_step_to "do_locals_tests" "" "var-cmd.c" [expr $line_dlt_linteger + 1] "step at do_locals_tests (2)"
 148
 149 # Test: c_variable-2.3
 150 # Desc: check whether only lpinteger changed
 151 mi_gdb_test "-var-update *" \
 152         "\\^done,changelist=\\\[\{name=\"lpinteger\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 153         "update all vars: lpinteger changed"
 154
 155 # Step over "lcharacter = 'a';"
 156 mi_step_to "do_locals_tests" "" "var-cmd.c" [expr $line_dlt_linteger + 2] "step at do_locals_tests (3)"
 157
 158 # Test: c_variable-2.4
 159 # Desc: check whether only lcharacter changed
 160 mi_gdb_test "-var-update *" \
 161         "\\^done,changelist=\\\[\{name=\"lcharacter\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 162         "update all vars: lcharacter changed"
 163
 164 # Step over "lpcharacter = &lcharacter;"
 165 mi_step_to "do_locals_tests" "" "var-cmd.c" [expr $line_dlt_linteger + 3] "step at do_locals_tests (4)"
 166
 167 # Test: c_variable-2.5
 168 # Desc: check whether only lpcharacter changed
 169 mi_gdb_test "-var-update *" \
 170         "\\^done,changelist=\\\[\{name=\"lpcharacter\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 171         "update all vars: lpcharacter changed"
 172
 173
 174 # Step over:
 175 #  llong = 2121L;
 176 #  lplong = &llong;
 177 #  lfloat = 2.1;
 178 #  lpfloat = &lfloat;
 179 #  ldouble = 2.718281828459045;
 180 #  lpdouble = &ldouble;
 181 #  lsimple.integer = 1234;
 182 #  lsimple.unsigned_integer = 255;
 183 #  lsimple.character = 'a';
 184
 185 mi_execute_to "exec-step 9" "end-stepping-range" "do_locals_tests" "" \
 186         "var-cmd.c" [expr $line_dlt_linteger + 12] "" "step at do_locals_tests (5)"
 187
 188 # Test: c_variable-2.6
 189 # Desc: check whether llong, lplong, lfloat, lpfloat, ldouble, lpdouble, lsimple.integer,
 190 #       lsimple.unsigned_character lsimple.integer lsimple.character changed
 191 mi_gdb_test "-var-update *" \
 192         "\\^done,changelist=\\\[\{name=\"lsimple.integer\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lsimple->integer\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lsimple.character\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lpdouble\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"ldouble\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lpfloat\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lfloat\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lplong\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"llong\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 193         "update all vars: many changed"
 194
 195 # Step over:
 196 #  lsimple.signed_character = 21;
 197 #  lsimple.char_ptr = &lcharacter;
 198 #  lpsimple = &lsimple;
 199 #  func = nothing;
 200
 201 set line_dlt_4321 [gdb_get_line_number "linteger = 4321;"]
 202
 203 mi_execute_to "exec-step 4" "end-stepping-range" "do_locals_tests" "" \
 204         "var-cmd.c" $line_dlt_4321 "" "step at do_locals_tests (6)"
 205
 206 # Test: c_variable-2.7
 207 # Desc: check whether (lsimple.signed_character, lsimple.char_ptr) lpsimple, func changed
 208 mi_gdb_test "-var-update *" \
 209         "\\^done,changelist=\\\[\{name=\"func\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lpsimple\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 210         "update all vars: func and lpsimple changed"
 211
 212 # Step over
 213 #  linteger = 4321;
 214 #  lcharacter = 'b';
 215 #  llong = 1212L;
 216 #  lfloat = 1.2;
 217 #  ldouble = 5.498548281828172;
 218 #  lsimple.integer = 255;
 219 #  lsimple.unsigned_integer = 4321;
 220 #  lsimple.character = 'b';
 221
 222 mi_execute_to "exec-step 8" "end-stepping-range" "do_locals_tests" "" \
 223         "var-cmd.c" [expr $line_dlt_4321 + 8] "" "step at do_locals_tests (7)"
 224
 225 # Test: c_variable-2.8
 226 # Desc: check whether linteger, lcharacter, llong, lfoat, ldouble, lsimple.integer,
 227 #       lpsimple.integer lsimple.character changed
 228 # Note: this test also checks that lpsimple->integer and lsimple.integer have
 229 #       changed (they are the same)
 230 mi_gdb_test "-var-update *" \
 231         "\\^done,changelist=\\\[\{name=\"lsimple.integer\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lsimple->integer\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lsimple.character\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"ldouble\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lfloat\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"llong\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lpcharacter\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"lcharacter\",in_scope=\"true\",type_changed=\"false\"\},\{name=\"linteger\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 232         "update all vars: lsimple and others changed"
 233
 234
 235 ###
 236 #
 237 # Test assignment to variables. More tests on assignment are in other files.
 238 #
 239 ###
 240 mi_gdb_test "-var-assign global_simple 0" \
 241         "&\"mi_cmd_var_assign: Variable object is not editable\\\\n\".*\\^error,msg=\"mi_cmd_var_assign: Variable object is not editable\"" \
 242         "assign to global_simple"
 243
 244 mi_gdb_test "-var-assign linteger 3333" \
 245         "\\^done,value=\"3333\"" \
 246         "assign to linteger"
 247
 248 # Allow lpcharacter to update, optionally.  Because it points to a
 249 # char variable instead of a zero-terminated string, if linteger is
 250 # directly after it in memory the printed characters may appear to
 251 # change.
 252 set lpchar_update "\{name=\"lpcharacter\",in_scope=\"true\",type_changed=\"false\"\},"
 253 mi_gdb_test "-var-update *" \
 254         "\\^done,changelist=\\\[($lpchar_update)?\{name=\"linteger\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 255         "update all vars: linteger changed after assign"
 256
 257 mi_gdb_test "-var-assign linteger 3333" \
 258         "\\^done,value=\"3333\"" \
 259         "assign to linteger again, same value"
 260
 261 mi_gdb_test "-var-update *" \
 262         "\\^done,changelist=\\\[\\\]" \
 263         "update all vars: linteger not changed after same assign"
 264
 265 mi_gdb_test "-var-evaluate-expression linteger" \
 266         "\\^done,value=\"3333\"" \
 267         "eval linteger"
 268
 269 mi_gdb_test "-var-assign lpinteger \"&linteger + 3\"" \
 270         "\\^done,value=\"$hex\"" \
 271         "assign to lpinteger"
 272
 273 mi_gdb_test "-var-update *" \
 274         "\\^done,changelist=\\\[\{name=\"lpinteger\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 275         "update all vars: lpinteger changed after assign"
 276
 277 mi_gdb_test "-var-update *" \
 278         "\\^done,changelist=\\\[\\\]" \
 279         "update all vars: no changes on second update"
 280
 281 mi_gdb_test "-var-evaluate-expression lpinteger" \
 282         "\\^done,value=\"$hex\"" \
 283         "eval lpinteger"
 284
 285 # reset the values to the original ones so that the rest of the file doesn't suffer.
 286
 287 mi_gdb_test "-var-assign linteger 4321" \
 288         "\\^done,value=\"4321\"" \
 289         "assign to linteger"
 290
 291 mi_gdb_test "-var-assign lpinteger &linteger" \
 292         "\\^done,value=\"$hex\"" \
 293         "assign to lpinteger"
 294
 295 mi_gdb_test "-var-assign lcharacter 'z'" \
 296         "\\^done,value=\"122 'z'\"" \
 297         "assign to lcharacter"
 298
 299 mi_gdb_test "-var-evaluate-expression lcharacter" \
 300         "\\^done,value=\"122 'z'\"" \
 301         "eval lcharacter"
 302
 303 mi_gdb_test "-var-assign llong 1313L" \
 304         "\\^done,value=\"1313\"" \
 305         "assign to llong"
 306 mi_gdb_test "-var-evaluate-expression llong" \
 307         "\\^done,value=\"1313\"" \
 308         "eval llong"
 309 mi_gdb_test "-var-assign llong 1212L" \
 310         "\\^done,value=\"1212\"" \
 311         "assign to llong"
 312
 313 mi_gdb_test "-var-assign lplong &llong+4" \
 314         "\\^done,value=\"$hex\"" \
 315         "assign to lplong"
 316 mi_gdb_test "-var-evaluate-expression lplong" \
 317         "\\^done,value=\"$hex\"" \
 318         "eval lplong"
 319 mi_gdb_test "-var-assign lplong &llong" \
 320         "\\^done,value=\"$hex\"" \
 321         "assign to lplong"
 322
 323 mi_gdb_test "-var-assign lfloat 3.4567" \
 324         "\\^done,value=\"3.45.*\"" \
 325         "assign to lfloat"
 326 mi_gdb_test "-var-evaluate-expression lfloat" \
 327         "\\^done,value=\"3.45.*\"" \
 328         "eval lfloat"
 329 mi_gdb_test "-var-assign lfloat 1.2345" \
 330         "\\^done,value=\"1.23.*\"" \
 331         "assign to lfloat"
 332
 333 mi_gdb_test "-var-assign lpfloat &lfloat+4" \
 334         "\\^done,value=\"$hex\"" \
 335         "assign to lpfloat"
 336
 337 mi_gdb_test "-var-assign ldouble 5.333318284590435" \
 338         "\\^done,value=\"5.333318284590435\"" \
 339         "assign to ldouble"
 340
 341 mi_gdb_test "-var-assign func do_block_tests" \
 342         "\\^done,value=\"$hex <do_block_tests>\"" \
 343         "assign to func"
 344
 345 mi_gdb_test "-var-assign lsimple.character 'd'" \
 346         "\\^done,value=\"100 'd'\"" \
 347         "assign to lsimple.character"
 348
 349 mi_gdb_test "-var-assign  lsimple->integer 222" \
 350         "\\^done,value=\"222\"" \
 351         "assign to lsimple->integer"
 352
 353 mi_gdb_test "-var-assign lsimple.integer 333" \
 354         "\\^done,value=\"333\"" \
 355         "assign to lsimple.integer"
 356
 357 mi_gdb_test "-var-update *" \
 358         "\\^done,changelist=.*" \
 359         "var update"
 360
 361 # Check that assignment of function and array values
 362 # promotes the assigned value to function pointer/data
 363 # pointer before comparing with the existing value,
 364 # and does not incorrectly make the value as changed.
 365 mi_gdb_test "-var-assign func do_block_tests" \
 366         "\\^done,value=\"$hex <do_block_tests>\"" \
 367         "assign same value to func"
 368
 369 mi_gdb_test "-var-update *" \
 370         "\\^done,changelist=\\\[\\\]" \
 371         "assign same value to func (update)"
 372
 373 mi_create_varobj array_ptr array_ptr "create global variable array_ptr"
 374
 375 mi_gdb_test "-var-assign array_ptr array2" \
 376         "\\^done,value=\"$hex\"" \
 377         "assign array to pointer"
 378
 379 mi_gdb_test "-var-update *" \
 380         "\\^done,changelist=\\\[\{name=\"array_ptr\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 381         "assign array to pointer (update)"
 382
 383 mi_gdb_test "-var-assign array_ptr array2" \
 384         "\\^done,value=\"$hex\"" \
 385         "assign same array to pointer"
 386
 387 mi_gdb_test "-var-update *" \
 388         "\\^done,changelist=\\\[\\\]" \
 389         "assign same array to pointer (update)"
 390
 391
 392 ######
 393 # End of assign tests
 394 #####
 395
 396 set line_subroutine1_body [gdb_get_line_number "global_simple.integer = i + 3;"]
 397
 398 mi_continue_to subroutine1
 399
 400 # Test: c_variable-2.10
 401 # Desc: create variable for locals i,l in subroutine1
 402 mi_create_varobj i i "create i"
 403
 404 mi_create_varobj l l "create l"
 405
 406 # Test: c_variable-2.11
 407 # Desc: create do_locals_tests local in subroutine1
 408 mi_gdb_test "-var-create linteger * linteger" \
 409         "&\"mi_cmd_var_create: unable to create variable object\\\\n\".*\\^error,msg=\"mi_cmd_var_create: unable to create variable object\"" \
 410         "create linteger"
 411
 412 mi_step_to "subroutine1" "\{name=\"i\",value=\".*\"\},\{name=\"l\",value=\".*\"\}" \
 413         "var-cmd.c" [expr $line_subroutine1_body + 1] "step at subroutine1"
 414
 415 # Test: c_variable-2.12
 416 # Desc: change global_simple.integer
 417 # Note: This also tests whether we are reporting changes in structs properly.
 418 #       gdb normally would say that global_simple has changed, but we
 419 #       special case that, since it is not what a human expects to
 420 #       see.
 421
 422 setup_xfail *-*-*
 423 mi_gdb_test "-var-update *" \
 424         "\\^done,changelist=\{FIXME: WHAT IS CORRECT HERE\}" \
 425         "update all vars: changed FIXME"
 426 clear_xfail *-*-*
 427
 428 mi_step_to "subroutine1" "\{name=\"i\",value=\".*\"\},\{name=\"l\",value=\".*\"\}" \
 429         "var-cmd.c" [expr $line_subroutine1_body + 2] "step at subroutine1 (2)"
 430
 431 # Test: c_variable-2.13
 432 # Desc: change subroutine1 local i
 433 mi_gdb_test "-var-update *" \
 434         "\\^done,changelist=\\\[\{name=\"i\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 435         "update all vars: i changed"
 436
 437 mi_step_to "subroutine1" "\{name=\"i\",value=\".*\"\},\{name=\"l\",value=\".*\"\}" \
 438         "var-cmd.c" [expr $line_subroutine1_body + 3] "step at subroutine1 (3)"
 439
 440 # Test: c_variable-2.14
 441 # Desc: change do_locals_tests local llong
 442 mi_gdb_test "-var-update *" \
 443         "\\^done,changelist=\\\[\{name=\"llong\",in_scope=\"true\",type_changed=\"false\"\}\\\]" \
 444         "update all vars: llong changed"
 445
 446 set line_dlt_call_subroutine1 [gdb_get_line_number "subroutine1 (linteger, &llong);"]
 447 mi_next_to "do_locals_tests" "" "var-cmd.c" \
 448   [expr $line_dlt_call_subroutine1 + 1] "next out of subroutine1"
 449
 450 # Test: c_variable-2.15
 451 # Desc: check for out of scope subroutine1 locals
 452 mi_gdb_test "-var-update *" \
 453         "\\^done,changelist=\\\[\{name=\"l\",in_scope=\"false\"\},\{name=\"i\",in_scope=\"false\"\}\\\]" \
 454         "update all vars: all now out of scope"
 455
 456 # Done with locals/globals tests. Erase all variables
 457 #delete_all_variables
 458 mi_gdb_test "-var-delete global_simple" \
 459         "\\^done,ndeleted=\"1\"" \
 460         "delete var"
 461
 462 mi_gdb_test "-var-delete linteger" \
 463         "\\^done,ndeleted=\"1\"" \
 464         "delete var linteger"
 465
 466 mi_gdb_test "-var-delete lpinteger" \
 467         "\\^done,ndeleted=\"1\"" \
 468         "delete var lpinteger"
 469
 470 mi_gdb_test "-var-delete lcharacter" \
 471         "\\^done,ndeleted=\"1\"" \
 472         "delete var lcharacter"
 473
 474 mi_gdb_test "-var-delete lpcharacter" \
 475         "\\^done,ndeleted=\"1\"" \
 476         "delete var lpcharacter"
 477
 478 mi_gdb_test "-var-delete llong" \
 479         "\\^done,ndeleted=\"1\"" \
 480         "delete var llong"
 481
 482 mi_gdb_test "-var-delete lplong" \
 483         "\\^done,ndeleted=\"1\"" \
 484         "delete var lplong"
 485
 486 mi_gdb_test "-var-delete lfloat" \
 487         "\\^done,ndeleted=\"1\"" \
 488         "delete var lfloat"
 489
 490 mi_gdb_test "-var-delete lpfloat" \
 491         "\\^done,ndeleted=\"1\"" \
 492         "delete var lpfloat"
 493
 494 mi_gdb_test "-var-delete ldouble" \
 495         "\\^done,ndeleted=\"1\"" \
 496         "delete var ldouble"
 497
 498 mi_gdb_test "-var-delete lpdouble" \
 499         "\\^done,ndeleted=\"1\"" \
 500         "delete var lpdouble"
 501
 502 mi_gdb_test "-var-delete lsimple" \
 503         "\\^done,ndeleted=\"1\"" \
 504         "delete var lsimple"
 505
 506 mi_gdb_test "-var-delete lpsimple" \
 507         "\\^done,ndeleted=\"1\"" \
 508         "delete var lpsimple"
 509
 510 mi_gdb_test "-var-delete func" \
 511         "\\^done,ndeleted=\"1\"" \
 512         "delete var func"
 513
 514 mi_gdb_test "-var-delete lsimple.character" \
 515         "\\^done,ndeleted=\"1\"" \
 516         "delete var lsimple.character"
 517
 518 mi_gdb_test "-var-delete  lsimple->integer" \
 519         "\\^done,ndeleted=\"1\"" \
 520         "delete var  lsimple->integer"
 521
 522 mi_gdb_test "-var-delete lsimple.integer" \
 523         "\\^done,ndeleted=\"1\"" \
 524         "delete var lsimple.integer"
 525
 526 mi_gdb_test "-var-delete i" \
 527         "\\^done,ndeleted=\"1\"" \
 528         "delete var i"
 529
 530 mi_gdb_test "-var-delete l" \
 531         "\\^done,ndeleted=\"1\"" \
 532         "delete var l"
 533
 534 # Test whether we can follow the name of a variable through multiple
 535 # stack frames.
 536 mi_continue_to do_special_tests
 537
 538 mi_gdb_test "-var-create selected_a @ a" \
 539   {\^done,name="selected_a",numchild="0",value=\".*\",type="int"} \
 540   "create selected_a"
 541
 542 mi_continue_to incr_a
 543
 544 mi_gdb_test "-var-update selected_a" \
 545         "\\^done,changelist=\\\[\{name=\"selected_a\",in_scope=\"true\",new_type=\"char\",new_num_children=\"0\"\}\\\]" \
 546         "update selected_a in incr_a"
 547
 548 mi_next "step a line in incr_a"
 549 mi_next "return from incr_a to do_special_tests"
 550
 551 mi_gdb_test "-var-update selected_a" \
 552         "\\^done,changelist=\\\[\{name=\"selected_a\",in_scope=\"true\",new_type=\"int\",new_num_children=\"0\"\}\\\]" \
 553         "update selected_a in do_special_tests"
 554
 555 # Test whether bad varobjs crash GDB.
 556
 557 # A varobj we fail to read during -var-update should be considered
 558 # out of scope.
 559 mi_create_varobj null_ptr **0 "create null_ptr"
 560
 561 # Allow this to succeed, if address zero is readable, although it
 562 # will not test what it was meant to.  Most important is that GDB
 563 # does not crash.
 564 mi_gdb_test "-var-update null_ptr" \
 565     {\^done,changelist=\[{.*}\]} \
 566     "update null_ptr"
 567
 568 mi_gdb_test "-var-delete null_ptr" \
 569     "\\^done,ndeleted=\"1\"" \
 570     "delete null_ptr"
 571
 572 # When we fail to read a varobj created from a named variable,
 573 # we evaluate its type instead.  Make sure that doesn't blow
 574 # up by trying to read it again.  We can use _end when not running
 575 # the program to simulate an unreadable variable, if this platform
 576 # provides _end, but cope if it's missing.
 577
 578 mi_gdb_test "kill" \
 579     {&"kill\\n".*\^done} \
 580     "kill program before endvar"
 581
 582 mi_create_varobj endvar _end "create endvar"
 583
 584 # Allow this to succeed whether the value is readable, unreadable, or
 585 # missing.  Most important is that GDB does not crash.
 586 mi_gdb_test "-var-update endvar" \
 587     {(\^done,changelist=\[.*\]|^".*".*\^error,msg=".*not found")} \
 588     "update endvar"
 589
 590 mi_gdb_test "-var-delete endvar" \
 591     "\\^done,ndeleted=\"1\"" \
 592     "delete endvar"
 593
 594 mi_gdb_exit
 595 return 0