gdb/testsuite/gdb.trace/unavailable.exp

   1 # Copyright 1998-2015 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 load_lib "trace-support.exp"
  17
  18 standard_testfile unavailable.cc
  19 set executable $testfile
  20
  21 if {[prepare_for_testing $testfile.exp $testfile $srcfile \
  22          {debug nowarnings c++}]} {
  23     return -1
  24 }
  25
  26 set ws "\[\r\n\t \]+"
  27 set cr "\[\r\n\]+"
  28
  29 if [is_amd64_regs_target] {
  30     set fpreg "rbp"
  31     set spreg "rsp"
  32     set pcreg "rip"
  33 } elseif [is_x86_like_target] {
  34     set fpreg "ebp"
  35     set spreg "esp"
  36     set pcreg "eip"
  37 } else {
  38     set fpreg "fp"
  39     set spreg "sp"
  40     set pcreg "pc"
  41 }
  42
  43 #
  44 # Utility procs
  45 #
  46
  47 proc test_register { reg } {
  48     global gdb_prompt
  49     global hex
  50     global cr
  51
  52     gdb_test_multiple "print /x $reg" "collected $reg" {
  53         -re "\\$\[0-9\]+ = \[x0\]+$cr$gdb_prompt $" {
  54             fail "collected $reg (zero)"
  55         }
  56         -re "\\$\[0-9\]+ = $hex$cr$gdb_prompt $" {
  57             pass "collected $reg"
  58         }
  59         -re "\[Ee\]rror.*$gdb_prompt $" {
  60             fail "collected $reg (error)"
  61         }
  62     }
  63 }
  64
  65 proc test_register_unavailable { reg } {
  66     gdb_test "print /x $reg" \
  67         "<unavailable>" \
  68         "correctly report $reg as unavailable"
  69 }
  70
  71 proc prepare_for_trace_test {} {
  72     global executable
  73
  74     clean_restart $executable
  75
  76     runto_main
  77
  78     gdb_test "break begin" ".*" ""
  79     gdb_test "break end" ".*" ""
  80 }
  81
  82 proc run_trace_experiment { test_func } {
  83     global gdb_prompt
  84
  85     gdb_test "continue" \
  86         ".*Breakpoint \[0-9\]+, begin .*" \
  87         "advance to begin"
  88
  89     gdb_test_no_output "tstart" "start trace experiment"
  90
  91     gdb_test "continue" \
  92             "Continuing.*Breakpoint \[0-9\]+, end.*" \
  93             "run trace experiment"
  94     gdb_test "tstop" \
  95             "\[\r\n\]+" \
  96             "stop trace experiment"
  97     gdb_test "tfind start" \
  98             "#0  $test_func .*" \
  99             "tfind test frame"
 100 }
 101
 102 # Test that "display VAR" works as expected, assuming VAR is wholly
 103 # unavailable.
 104
 105 proc test_maybe_regvar_display { var } {
 106     global gdb_prompt
 107
 108     # Evaluating VAR's location description may throw an internal
 109     # "unavailable" exception, if for example, the value of a register
 110     # necessary for computing VAR's location is unavailable.  Such an
 111     # exception is caught, and should not cause automatic disablement
 112     # of the current display being printed.  (GDB used to disable the
 113     # current display whenever any exception was thrown.)
 114     set test "display $var"
 115     gdb_test_multiple "$test" "$test" {
 116         -re "Disabling display ? to avoid infinite recursion.*$gdb_prompt $" {
 117             fail "$test"
 118         }
 119         -re "display ${var}\r\n1: ${var} = <unavailable>\r\n$gdb_prompt $" {
 120             pass "$test"
 121         }
 122     }
 123     gdb_test "info display" ".*1:\[ \t\]+y\[ \t\]+${var}" "display ${var} is enabled"
 124
 125     gdb_test "undisp" \
 126         "" \
 127         "delete $var display" \
 128         ".*Delete all auto-display expressions.*y or n. $" \
 129         "y"
 130 }
 131
 132 #
 133 # Test procs
 134 #
 135
 136 proc gdb_collect_args_test_1 {} {
 137     global cr
 138
 139     # Test printing the variables, and also their addresses.  We
 140     # haven't collected any stack, so there's no way GDB can figure
 141     # out the latter.
 142
 143     gdb_test "print argc" " = <unavailable>"
 144     gdb_test "print &argc" \
 145         "Can't take address of \"argc\" which isn't an lvalue\."
 146
 147     gdb_test "print argi" " = <unavailable>"
 148     gdb_test "print &argi" \
 149         "Can't take address of \"argi\" which isn't an lvalue\."
 150
 151     gdb_test "print argf" " = <unavailable>"
 152     gdb_test "print &argf" \
 153         "Can't take address of \"argf\" which isn't an lvalue\."
 154
 155     gdb_test "print argd" " = <unavailable>"
 156     gdb_test "print &argd" \
 157         "Can't take address of \"argd\" which isn't an lvalue\."
 158
 159     # struct arg as one of several args (near end of list)
 160
 161     gdb_test "print argstruct" " = <unavailable>"
 162
 163     gdb_test "print argstruct.memberc" " = <unavailable>"
 164     gdb_test "print argstruct.memberi" " = <unavailable>"
 165     gdb_test "print argstruct.memberf" " = <unavailable>"
 166     gdb_test "print argstruct.memberd" " = <unavailable>"
 167
 168     gdb_test "print argarray" " = <unavailable>"
 169
 170     gdb_test "print &argarray" \
 171         "Can't take address of \"argarray\" which isn't an lvalue\."
 172
 173     gdb_test "print argarray\[0\]" "value is not available"
 174
 175     # Test "info args"
 176     set r ""
 177     set r "${r}argc = <unavailable>${cr}"
 178     set r "${r}argi = <unavailable>${cr}"
 179     set r "${r}argf = <unavailable>${cr}"
 180     set r "${r}argd = <unavailable>${cr}"
 181     set r "${r}argstruct = <unavailable>${cr}"
 182     set r "${r}argarray = <unavailable>${cr}"
 183     gdb_test "info args" "$r" "info args"
 184
 185     test_maybe_regvar_display "argc"
 186 }
 187
 188 proc gdb_collect_args_test {} {
 189     with_test_prefix "unavailable arguments" {
 190         global gdb_prompt
 191         global testfile srcdir subdir binfile
 192         global trace_file_targets
 193
 194         prepare_for_trace_test
 195
 196         gdb_test "trace args_test_func" \
 197             "Tracepoint \[0-9\]+ at .*" \
 198             "set tracepoint"
 199
 200         # Begin the test.
 201         run_trace_experiment args_test_func
 202
 203         gdb_collect_args_test_1
 204
 205         gdb_test "tfind none" \
 206             "#0  end .*" \
 207             "cease trace debugging"
 208
 209         set tracefile [standard_output_file ${testfile}]
 210         gdb_test "tsave ${tracefile}.args.tfile" \
 211             "Trace data saved to file '${tracefile}.args.tfile'\.\\r" \
 212             "tsave ${testfile}.args.tfile"
 213         gdb_test "tsave -ctf ${tracefile}.args.ctf" \
 214             "Trace data saved to directory '${tracefile}.args.ctf'\.\\r" \
 215             "save ctf trace file"
 216
 217         foreach target_name ${trace_file_targets} {
 218             # Restart GDB and read the trace data in ${TARGET_NAME} target.
 219             gdb_exit
 220             gdb_start
 221             gdb_reinitialize_dir $srcdir/$subdir
 222             gdb_file_cmd $binfile
 223             gdb_test "target ${target_name} ${tracefile}.args.${target_name}" ".*" \
 224                 "change to ${target_name} target"
 225
 226             with_test_prefix "${target_name}" {
 227                 gdb_test "tfind start" "#0  args_test_func .*" \
 228                     "tfind test frame"
 229                 gdb_collect_args_test_1
 230             }
 231         }
 232     }
 233 }
 234
 235 proc gdb_collect_locals_test_1 { func } {
 236     global cr
 237
 238     gdb_test "print locc" " = <unavailable>"
 239     gdb_test "print loci" " = <unavailable>"
 240     gdb_test "print locf" " = <unavailable>"
 241     gdb_test "print locd" " = <unavailable>"
 242
 243     gdb_test "print locst.memberc" " = <unavailable>"
 244     gdb_test "print locst.memberi" " = <unavailable>"
 245     gdb_test "print locst.memberf" " = <unavailable>"
 246     gdb_test "print locst.memberd" " = <unavailable>"
 247
 248     gdb_test "print locar\[0\]" " = <unavailable>"
 249     gdb_test "print locar\[1\]" " = <unavailable>"
 250     gdb_test "print locar\[2\]" " = <unavailable>"
 251     gdb_test "print locar\[3\]" " = <unavailable>"
 252
 253     # Test "info locals"
 254     set r ""
 255     set r "${r}locf = <unavailable>${cr}"
 256     set r "${r}locd = <unavailable>${cr}"
 257     set r "${r}locst = <unavailable>${cr}"
 258     set r "${r}locar = <unavailable>${cr}"
 259     set r "${r}i = <unavailable>${cr}"
 260     if { $func == "local_test_func" } {
 261         set r "${r}locdefst = <unavailable>${cr}"
 262     }
 263     set r "${r}locc = <unavailable>${cr}"
 264     set r "${r}loci = <unavailable>${cr}"
 265     gdb_test "info locals" "$r" "info locals"
 266
 267     test_maybe_regvar_display "loci"
 268 }
 269
 270 proc gdb_collect_locals_test { func msg } {
 271     with_test_prefix "unavailable locals: $msg" {
 272         global gdb_prompt
 273         global testfile srcdir subdir binfile
 274         global trace_file_targets
 275
 276         prepare_for_trace_test
 277
 278         set testline [gdb_get_line_number "set $func tracepoint here"]
 279
 280         gdb_test "trace $testline" \
 281             "Tracepoint \[0-9\]+ at .*" \
 282             "set tracepoint"
 283
 284         # Begin the test.
 285         run_trace_experiment $func
 286
 287         gdb_collect_locals_test_1 $func
 288
 289         gdb_test "tfind none" \
 290             "#0  end .*" \
 291             "cease trace debugging"
 292
 293         set tracefile [standard_output_file ${testfile}]
 294         gdb_test "tsave ${tracefile}.locals.tfile" \
 295             "Trace data saved to file '${tracefile}.locals.tfile'\.\\r" \
 296             "tsave ${testfile}.locals.tfile"
 297         gdb_test "tsave -ctf ${tracefile}.locals.ctf" \
 298             "Trace data saved to directory '${tracefile}.locals.ctf'\.\\r" \
 299             "save ctf trace file"
 300
 301         foreach target_name ${trace_file_targets} {
 302             # Restart GDB and read the trace data in ${TARGET_NAME} target.
 303             gdb_exit
 304             gdb_start
 305             gdb_reinitialize_dir $srcdir/$subdir
 306             gdb_file_cmd $binfile
 307             gdb_test "target ${target_name} ${tracefile}.locals.${target_name}" ".*" \
 308                 "change to ${target_name} target"
 309
 310             with_test_prefix "${target_name}" {
 311                 gdb_test "tfind start" "#0  $func .*" \
 312                     "tfind test frame"
 313                 gdb_collect_locals_test_1 $func
 314             }
 315         }
 316     }
 317 }
 318
 319 proc gdb_unavailable_registers_test_1 { } {
 320     global spreg
 321     global pcreg
 322
 323     # On some archs, the $sp/$pc are a real raw registers.  On others,
 324     # like x86, they're user registers.  Test both variants.
 325     test_register_unavailable "\$$spreg"
 326     test_register_unavailable "\$sp"
 327
 328     # Test reading uncollected pseudo-registers.  The set of which
 329     # depends on target.
 330     if [is_amd64_regs_target] {
 331         # Check the raw register first.
 332         test_register_unavailable "\$rax"
 333         test_register_unavailable "\$eax"
 334         test_register_unavailable "\$ax"
 335     } elseif [is_x86_like_target] {
 336         # Check the raw register first.
 337         test_register_unavailable "\$eax"
 338         test_register_unavailable "\$ax"
 339     }
 340
 341     # GDBserver always provides the PC value of regular tracepoint
 342     # hits, since it's the same as the tracepoint's address.
 343     test_register "\$$pcreg"
 344     test_register "\$pc"
 345
 346     gdb_test "info registers" \
 347         "<unavailable>.*<unavailable>" \
 348         "info registers, multiple registers not available"
 349
 350     gdb_test "info registers \$$spreg" \
 351         "<unavailable>" \
 352         "info registers \$$spreg reports not available"
 353 }
 354
 355 proc gdb_unavailable_registers_test { } {
 356     with_test_prefix "unavailable registers" {
 357         global testfile srcdir subdir binfile
 358         global trace_file_targets
 359
 360         prepare_for_trace_test
 361
 362         # We'll simply re-use the globals_test_function for this test
 363         gdb_test "trace globals_test_func" \
 364             "Tracepoint \[0-9\]+ at .*" \
 365             "set tracepoint"
 366
 367         # Collect nothing.
 368
 369         # Begin the test.
 370         run_trace_experiment globals_test_func
 371
 372         gdb_unavailable_registers_test_1
 373
 374         gdb_test "tfind none" "#0  end .*" "cease trace debugging"
 375
 376         set tracefile [standard_output_file ${testfile}]
 377         gdb_test "tsave ${tracefile}.registers.tfile" \
 378             "Trace data saved to file '${tracefile}.registers.tfile'\.\\r" \
 379             "tsave ${testfile}.registers.tfile"
 380         gdb_test "tsave -ctf ${tracefile}.registers.ctf" \
 381             "Trace data saved to directory '${tracefile}.registers.ctf'\.\\r" \
 382             "save ctf trace file"
 383
 384         foreach target_name ${trace_file_targets} {
 385             # Restart GDB and read the trace data in ${TARGET_NAME} target.
 386             gdb_exit
 387             gdb_start
 388             gdb_reinitialize_dir $srcdir/$subdir
 389             gdb_file_cmd $binfile
 390             gdb_test "target ${target_name} ${tracefile}.registers.${target_name}" ".*" \
 391                 "change to ${target_name} target"
 392
 393             with_test_prefix "${target_name}" {
 394                 gdb_test "tfind start" "#0  globals_test_func .*" \
 395                     "tfind test frame"
 396                 gdb_unavailable_registers_test_1
 397             }
 398         }
 399     }
 400 }
 401
 402 proc gdb_unavailable_floats_1 { } {
 403     global gdb_prompt
 404
 405     # Necessarily target specific.
 406     if {[istarget "x86_64-*-*"] || [istarget i?86-*]} {
 407         send_gdb "info float\n"
 408         gdb_expect_list "info float" ".*$gdb_prompt $" {
 409             "Status Word:         <unavailable>"
 410             "Control Word:        <unavailable>"
 411             "Tag Word:            <unavailable>"
 412             "Instruction Pointer: <unavailable>:<unavailable>"
 413             "Operand Pointer:     <unavailable>:<unavailable>"
 414             "Opcode:              <unavailable>"
 415         }
 416     }
 417 }
 418
 419 proc gdb_unavailable_floats { } {
 420     with_test_prefix "unavailable floats" {
 421         global testfile srcdir subdir binfile
 422         global trace_file_targets
 423
 424         prepare_for_trace_test
 425
 426         # We'll simply re-use the globals_test_function for this test
 427         gdb_test "trace globals_test_func" \
 428             "Tracepoint \[0-9\]+ at .*" \
 429             "set tracepoint"
 430
 431         # Collect nothing.
 432
 433         # Begin the test.
 434         run_trace_experiment globals_test_func
 435
 436         gdb_unavailable_floats_1
 437
 438         gdb_test "tfind none" "#0  end .*" "cease trace debugging"
 439
 440         set tracefile [standard_output_file ${testfile}]
 441         gdb_test "tsave ${tracefile}.floats.tfile" \
 442             "Trace data saved to file '${tracefile}.floats.tfile'\.\\r" \
 443             "tsave ${testfile}.floats.tfile"
 444         gdb_test "tsave -ctf ${tracefile}.floats.ctf" \
 445             "Trace data saved to directory '${tracefile}.floats.ctf'\.\\r" \
 446             "save ctf trace file"
 447
 448         foreach target_name ${trace_file_targets} {
 449             # Restart GDB and read the trace data in ${TARGET_NAME} target.
 450             gdb_exit
 451             gdb_start
 452             gdb_reinitialize_dir $srcdir/$subdir
 453             gdb_file_cmd $binfile
 454             gdb_test "target ${target_name} ${tracefile}.floats.${target_name}" ".*" \
 455                 "change to ${target_name} target"
 456
 457             with_test_prefix "${target_name}" {
 458                 gdb_test "tfind start" "#0  globals_test_func .*" \
 459                     "tfind test frame"
 460                 gdb_unavailable_floats_1
 461             }
 462         }
 463     }
 464 }
 465
 466 proc gdb_collect_globals_test_1 { } {
 467     global ws
 468     global cr
 469     global gdb_prompt
 470     global hex
 471
 472     gdb_test "print globalc" " = <unavailable>"
 473     gdb_test "print globali" " = <unavailable>"
 474     gdb_test "print globalf" " = <unavailable>"
 475     gdb_test "print globald" " = <unavailable>"
 476
 477     gdb_test "print globalstruct.memberc" " = <unavailable>"
 478     gdb_test "print globalstruct.memberi" " = <unavailable>"
 479     gdb_test "print globalstruct.memberf" " = <unavailable>"
 480     gdb_test "print globalstruct.memberd" " = <unavailable>"
 481
 482     gdb_test "print globalstruct" " = <unavailable>"
 483
 484     gdb_test "print globalp == &globalstruct" \
 485         "value is not available" \
 486         "can't compare using non collected global pointer"
 487
 488     gdb_test "print globalarr\[1\]" " = <unavailable>"
 489     gdb_test "print globalarr\[2\]" " = <unavailable>"
 490     gdb_test "print globalarr\[3\]" " = <unavailable>"
 491
 492     gdb_test "print struct_b" \
 493         " = {d = <unavailable>, ef = <unavailable>, struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable>, <unavailable>, -1431655766, <unavailable> <repeats 97 times>, -1431655766, <unavailable> <repeats 9899 times>}, ptr = <unavailable>, bitfield = <unavailable>}, s = <unavailable>, static static_struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable> <repeats 10000 times>}, ptr = <unavailable>, bitfield = <unavailable>}, string = <unavailable>}"
 494
 495     gdb_test "print /x struct_b" \
 496         " = {d = <unavailable>, ef = <unavailable>, struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable>, <unavailable>, 0xaaaaaaaa, <unavailable> <repeats 97 times>, 0xaaaaaaaa, <unavailable> <repeats 9899 times>}, ptr = <unavailable>, bitfield = <unavailable>}, s = <unavailable>, static static_struct_a = {a = <unavailable>, b = <unavailable>, array = {<unavailable> <repeats 10000 times>}, ptr = <unavailable>, bitfield = <unavailable>}, string = <unavailable>}"
 497
 498     gdb_test "print /x struct_b.struct_a" \
 499         " = {a = <unavailable>, b = <unavailable>, array = {<unavailable>, <unavailable>, 0xaaaaaaaa, <unavailable> <repeats 97 times>, 0xaaaaaaaa, <unavailable> <repeats 9899 times>}, ptr = <unavailable>, bitfield = <unavailable>}"
 500
 501     gdb_test "print /x struct_b.struct_a.array" \
 502         " = {<unavailable>, <unavailable>, 0xaaaaaaaa, <unavailable> <repeats 97 times>, 0xaaaaaaaa, <unavailable> <repeats 9899 times>}"
 503
 504     gdb_test "print /x struct_b.struct_a.array\[0\]" " = <unavailable>"
 505
 506     gdb_test "print /x struct_b.struct_a.array\[2\]" " = 0xaaaaaaaa"
 507
 508     # Check the target doesn't overcollect.  GDB used to merge memory
 509     # ranges to collect if they were close enough (collecting the hole
 510     # as well), but does not do that anymore.  It's plausible that a
 511     # target may do this on its end, but as of this writing, no known
 512     # target does it.
 513     gdb_test "print {a, b, c}" \
 514         " = \\{1, <unavailable>, 3\\}" \
 515         "No overcollect of almost but not quite adjacent memory ranges"
 516
 517     # Check <unavailable> isn't confused with 0 in array element repetitions
 518
 519     gdb_test_no_output "set print repeat 1"
 520
 521     gdb_test "print /x tarray" \
 522         " = \{\{a = 0x0, b = <unavailable>\} <repeats 2 times>, \{a = <unavailable>, b = <unavailable>\}, \{a = 0x0, b = 0x0\}, \{a = <unavailable>, b = 0x0\} <repeats 2 times>, \{a = <unavailable>, b = <unavailable>\} <repeats 2 times>\}" \
 523         "<unavailable> is not the same as 0 in array element repetitions"
 524
 525     gdb_test_no_output "set print repeat 10"
 526
 527     # Check that value repeat handles unavailable-ness.
 528     gdb_test "print *tarray@3" " = \\{\\{a = 0, b = <unavailable>\\}, \\{a = 0, b = <unavailable>\\}, \\{a = <unavailable>, b = <unavailable>\\}\\}"
 529
 530     # Static fields
 531
 532     gdb_test "print struct_b.static_struct_a" " = <unavailable>"
 533
 534     # Bitfields
 535
 536     gdb_test "print struct_b.struct_a.bitfield" " = <unavailable>"
 537
 538     # References
 539
 540     gdb_test "print g_int" " = <unavailable>"
 541
 542     gdb_test "print g_ref" \
 543         "\\(int &\\) @$hex: <unavailable>" \
 544         "global reference shows address but not value"
 545
 546     gdb_test "print *&g_ref" \
 547         "\\$\[0-9\]+ = <unavailable>$cr" \
 548         "referenced integer was not collected (taking address of reference)"
 549
 550     gdb_test "print *g_structref_p" " = <unavailable>"
 551
 552     # Strings
 553
 554     # Const string is always available, even when not collected.
 555     gdb_test "print g_const_string" \
 556         " = \"hello world\"$cr" \
 557         "non collected const string is still printable"
 558
 559     gdb_test "print g_string_p" \
 560         " = $hex <g_const_string> \"hello world\"" \
 561         "printing constant string through collected pointer"
 562
 563     gdb_test "print g_string_unavail" \
 564         " = <unavailable>" \
 565         "printing non collected string"
 566
 567     # Incomplete strings print as an array.
 568     gdb_test "print g_string_partial" \
 569         "\\$\[0-9\]+ = \{<unavailable>, 101 'e', 108 'l', <unavailable>, <unavailable>, <unavailable>, <unavailable>, <unavailable>, <unavailable>, <unavailable>, <unavailable>, <unavailable>\}" \
 570         "printing partially collected string"
 571
 572     # It is important for this test that the last examined value is
 573     # <unavailable>, to exercise the case of the $__ convenience
 574     # variable being set to <unavailable> without error.
 575     set msg "examining partially collected object"
 576     gdb_test_multiple "x /10x &struct_b" "$msg" {
 577         -re "$hex <struct_b>:${ws}<unavailable>${ws}<unavailable>${ws}<unavailable>${ws}<unavailable>$cr$hex <struct_b\\+16>:${ws}<unavailable>${ws}<unavailable>${ws}0xaaaaaaaa${ws}<unavailable>$cr$hex <struct_b\\+32>:${ws}<unavailable>${ws}<unavailable>$cr$gdb_prompt $" {
 578             pass "$msg"
 579         }
 580         -re "value is not available" {
 581             fail "$msg"
 582         }
 583     }
 584
 585     gdb_test "p \$__" " = <unavailable>" "last examined value was <unavailable>"
 586
 587     # This tests that building the array does not require accessing
 588     # g_int's contents.
 589     gdb_test "print { 1, g_int, 3 }" \
 590         " = \\{1, <unavailable>, 3\\}" \
 591         "build array from unavailable value"
 592
 593     # Note, depends on previous test.
 594     gdb_test "print \$\[1\]" \
 595         " = <unavailable>" \
 596         "subscript a non-memory rvalue array, accessing an unvailable element"
 597
 598     # Access a field of a non-lazy value, making sure the
 599     # unavailable-ness is propagated.  History values are easy
 600     # non-lazy values, so use those.  The first test just sets up for
 601     # the second.
 602     gdb_test "print g_smallstruct" " = <unavailable>"
 603     gdb_test "print \$.member" " = <unavailable>"
 604
 605     # Cast to baseclass, checking the unavailable-ness is propagated.
 606     gdb_test "print (small_struct) g_smallstruct_b" " = <unavailable>"
 607
 608     # Same cast, but starting from a non-lazy, value.
 609     gdb_test "print g_smallstruct_b" " = <unavailable>"
 610     gdb_test "print (small_struct) \$" " = <unavailable>"
 611
 612     gdb_test_no_output "set print object on"
 613
 614     with_test_prefix "print object on" {
 615         # With print object on, printing a pointer may need to fetch
 616         # the pointed-to object, to check its run-time type.  Make
 617         # sure that fails gracefully and transparently when the
 618         # pointer itself is unavailable.
 619         gdb_test "print virtualp" " = <unavailable>"
 620
 621         # no vtable pointer available
 622         gdb_test "print derived_unavail" " = <unavailable>"
 623
 624         # vtable pointer available, but nothing else
 625         gdb_test "print derived_partial" \
 626             " = \\(Derived\\) {<Middle> = {<Base> = <unavailable>, _vptr.Middle = <unavailable>, y = <unavailable>}, _vptr.Derived = $hex <vtable for Derived.*>, z = <unavailable>}"
 627
 628         # whole object available
 629         gdb_test "print derived_whole" \
 630             " = \\(Derived\\) {<Middle> = {<Base> = {x = 2}, _vptr.Middle = $hex, y = 3}, _vptr.Derived = $hex <vtable for Derived.*>, z = 4}"
 631     }
 632
 633     gdb_test_no_output "set print object off"
 634
 635     with_test_prefix "print object off" {
 636         gdb_test "print virtualp" " = <unavailable>"
 637
 638         # no vtable pointer available
 639         gdb_test "print derived_unavail" \
 640             " = <unavailable>"
 641
 642         # vtable pointer available, but nothing else
 643         gdb_test "print derived_partial" \
 644             " = {<Middle> = {<Base> = <unavailable>, _vptr.Middle = <unavailable>, y = <unavailable>}, _vptr.Derived = $hex <vtable for Derived.*>, z = <unavailable>}"
 645
 646         # whole object available
 647         gdb_test "print derived_whole" \
 648             " = {<Middle> = {<Base> = {x = 2}, _vptr.Middle = $hex, y = 3}, _vptr.Derived = $hex <vtable for Derived.*>, z = 4}"
 649     }
 650
 651     # An instance of a virtual class where we collected everything but
 652     # the vptr.
 653     gdb_test "print virtual_partial" \
 654         " = {_vptr.Virtual = <unavailable>, z = 0}"
 655 }
 656
 657 proc gdb_collect_globals_test { } {
 658     with_test_prefix "collect globals" {
 659         global testfile binfile srcdir subdir
 660         global trace_file_targets
 661
 662         prepare_for_trace_test
 663
 664         set testline [gdb_get_line_number "set globals_test_func tracepoint here"]
 665
 666         gdb_test "trace $testline" \
 667             "Tracepoint \[0-9\]+ at .*" \
 668             "set tracepoint"
 669
 670         # We collect the initial sizeof(pointer) bytes of derived_partial
 671         # in an attempt of collecting the vptr.  Not portable, but should
 672         # work everywhere we need to care.
 673         gdb_trace_setactions "define actions" \
 674             "" \
 675             "collect struct_b.struct_a.array\[2\]" "^$" \
 676             "collect struct_b.struct_a.array\[100\]" "^$" \
 677             \
 678             "collect a" "^$" \
 679             "collect c" "^$" \
 680             \
 681             "collect tarray\[0\].a" "^$" \
 682             "collect tarray\[1\].a" "^$" \
 683             "collect tarray\[3\].a" "^$" \
 684             "collect tarray\[3\].b" "^$" \
 685             "collect tarray\[4\].b" "^$" \
 686             "collect tarray\[5\].b" "^$" \
 687             \
 688             "collect g_string_p" "^$" \
 689             "collect g_string_partial\[1\]" "^$" \
 690             "collect g_string_partial\[2\]" "^$" \
 691             \
 692             "collect g_structref_p" "^$" \
 693             \
 694             "collect *((char *)&derived_partial)@sizeof\(void *\)" "^$" \
 695             "collect derived_whole" "^$" \
 696             \
 697             "collect virtual_partial.z" "^$"
 698
 699         # Begin the test.
 700         run_trace_experiment globals_test_func
 701
 702         gdb_collect_globals_test_1
 703
 704         gdb_test "tfind none" \
 705             "#0  end .*" \
 706             "cease trace debugging"
 707
 708         set tracefile [standard_output_file ${testfile}]
 709         gdb_test "tsave ${tracefile}.globals.tfile" \
 710             "Trace data saved to file '${tracefile}.globals.tfile'\.\\r" \
 711             "tsave ${testfile}.globals.tfile"
 712         gdb_test "tsave -ctf ${tracefile}.globals.ctf" \
 713             "Trace data saved to directory '${tracefile}.globals.ctf'\.\\r" \
 714             "save ctf trace file"
 715
 716         foreach target_name ${trace_file_targets} {
 717             # Restart GDB and read the trace data in ${TARGET_NAME} target.
 718             gdb_exit
 719             gdb_start
 720             gdb_reinitialize_dir $srcdir/$subdir
 721             gdb_file_cmd $binfile
 722             gdb_test "target ${target_name} ${tracefile}.globals.${target_name}" ".*" \
 723                 "change to ${target_name} target"
 724
 725             with_test_prefix "${target_name}" {
 726                 gdb_test "tfind start" "#0  globals_test_func .*" \
 727                     "tfind test frame"
 728                 gdb_collect_globals_test_1
 729             }
 730         }
 731
 732     }
 733 }
 734
 735 proc gdb_trace_collection_test {} {
 736     gdb_collect_globals_test
 737     gdb_unavailable_registers_test
 738     gdb_unavailable_floats
 739
 740     gdb_collect_args_test
 741     gdb_collect_locals_test local_test_func "auto locals"
 742     gdb_collect_locals_test reglocal_test_func "register locals"
 743     gdb_collect_locals_test statlocal_test_func "static locals"
 744 }
 745
 746 runto_main
 747
 748 if { ![gdb_target_supports_trace] } then {
 749     unsupported "Current target does not support trace"
 750     return 1
 751 }
 752
 753 set trace_file_targets [list "tfile"]
 754 gdb_test_multiple "target ctf" "" {
 755     -re "Undefined target command: \"ctf\"\.  Try \"help target\"\.\r\n$gdb_prompt $" {
 756     }
 757     -re "No CTF directory specified.*\r\n$gdb_prompt $" {
 758         lappend trace_file_targets "ctf"
 759     }
 760 }
 761
 762 # Body of test encased in a proc so we can return prematurely.
 763 gdb_trace_collection_test
 764
 765 # Finished!
 766 gdb_test "tfind none" ".*" ""