gdb/testsuite/gdb.base/break.exp

   1 #   Copyright 1988-2020 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 # This file was written by Rob Savoye. (rob@cygnus.com)
  17
  18 if { [prepare_for_testing "failed to prepare" "break" {break.c break1.c} {debug nowarnings}] } {
  19     return -1
  20 }
  21 set srcfile break.c
  22 set srcfile1 break1.c
  23 #
  24 # test simple breakpoint setting commands
  25 #
  26
  27 # Test deleting all breakpoints when there are none installed,
  28 # GDB should not prompt for confirmation.
  29 # Note that lib/gdb.exp provides a "delete_breakpoints" proc
  30 # for general use elsewhere.
  31
  32 send_gdb "delete breakpoints\n"
  33 gdb_expect {
  34      -re "Delete all breakpoints.*$" {
  35             send_gdb "y\n"
  36             gdb_expect {
  37                 -re "$gdb_prompt $" {
  38                     fail "delete all breakpoints when none (unexpected prompt)"
  39                 }
  40                 timeout { fail "delete all breakpoints when none (timeout after unexpected prompt)" }
  41             }
  42         }
  43      -re ".*$gdb_prompt $"       { pass "delete all breakpoints when none" }
  44     timeout                 { fail "delete all breakpoints when none (timeout)" }
  45 }
  46
  47 #
  48 # test break at function
  49 #
  50 gdb_test "break main" \
  51     "Breakpoint.*at.* file .*$srcfile, line.*" \
  52     "breakpoint function"
  53
  54 #
  55 # test break at quoted function
  56 #
  57 gdb_test "break \"marker2\"" \
  58     "Breakpoint.*at.* file .*$srcfile1, line.*" \
  59     "breakpoint quoted function"
  60
  61 #
  62 # test break at function in file
  63 #
  64 gdb_test "break $srcfile:factorial" \
  65     "Breakpoint.*at.* file .*$srcfile, line.*" \
  66     "breakpoint function in file"
  67
  68 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
  69
  70 #
  71 # test break at line number
  72 #
  73 # Note that the default source file is the last one whose source text
  74 # was printed.  For native debugging, before we've executed the
  75 # program, this is the file containing main, but for remote debugging,
  76 # it's wherever the processor was stopped when we connected to the
  77 # board.  So, to be sure, we do a list command.
  78 #
  79 gdb_test "list main" \
  80     ".*main \\(int argc, char \\*\\*argv, char \\*\\*envp\\).*" \
  81     "use `list' to establish default source file"
  82 gdb_test "break $bp_location1" \
  83     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \
  84     "breakpoint line number"
  85
  86 #
  87 # test duplicate breakpoint
  88 #
  89 gdb_test "break $bp_location1" \
  90     "Note: breakpoint \[0-9\]+ also set at pc.*Breakpoint \[0-9\]+ at.* file .*$srcfile, line $bp_location1\\." \
  91     "breakpoint duplicate"
  92
  93 set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
  94
  95 #
  96 # test break at line number in file
  97 #
  98 gdb_test "break $srcfile:$bp_location2" \
  99     "Breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \
 100     "breakpoint line number in file"
 101
 102 set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
 103 set bp_location4 [gdb_get_line_number "set breakpoint 4 here"]
 104
 105 #
 106 # Test putting a break at the start of a multi-line if conditional.
 107 # Verify the breakpoint was put at the start of the conditional.
 108 #
 109 gdb_test "break multi_line_if_conditional" \
 110     "Breakpoint.*at.* file .*$srcfile, line $bp_location3\\." \
 111     "breakpoint at start of multi line if conditional"
 112
 113 gdb_test "break multi_line_while_conditional" \
 114     "Breakpoint.*at.* file .*$srcfile, line $bp_location4\\." \
 115     "breakpoint at start of multi line while conditional"
 116
 117 set bp_location6 [gdb_get_line_number "set breakpoint 6 here"]
 118
 119 set main_line $bp_location6
 120
 121 set bp_location7 [gdb_get_line_number "set breakpoint 7 here"]
 122 set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
 123
 124 gdb_test "info break" \
 125     "Num     Type\[ \]+Disp Enb Address\[ \]+What.*
 126 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$main_line.*
 127 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2 at .*$srcfile1:$bp_location8.*
 128 \[0-9\]+\[\t \]+breakpoint     keep y.* in factorial at .*$srcfile:$bp_location7.*
 129 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 130 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 131 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location2.*
 132 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_if_conditional at .*$srcfile:$bp_location3.*
 133 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_while_conditional at .*$srcfile:$bp_location4" \
 134     "breakpoint info"
 135
 136 #
 137 # Test info breakpoint with arguments
 138 #
 139
 140 set see1 0
 141 set see2 0
 142 set see3 0
 143 set see4 0
 144 set see5 0
 145 set see6 0
 146
 147 gdb_test_multiple "info break 2 4 6" "info break 2 4 6" {
 148     -re "1\[\t \]+breakpoint *keep y\[^\r\n\]*:$main_line\[^\r\n\]*" {
 149         set see1 1
 150         exp_continue
 151     }
 152     -re "2\[\t \]+breakpoint *keep y\[^\r\n\]* in marker2 at \[^\r\n\]*" {
 153         set see2 1
 154         exp_continue
 155     }
 156     -re "3\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location7\[^\r\n\]*" {
 157         set see3 1
 158         exp_continue
 159     }
 160     -re "4\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 161         set see4 1
 162         exp_continue
 163     }
 164     -re "5\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 165         set see5 1
 166         exp_continue
 167     }
 168     -re "6\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location2\[^\r\n\]*" {
 169         set see6 1
 170         exp_continue
 171     }
 172     -re ".*$gdb_prompt $" {
 173         if { !$see1 && $see2 && !$see3 && $see4 && !$see5 && $see6 } then {
 174             pass "info break 2 4 6"
 175         } else {
 176             fail "info break 2 4 6"
 177         }
 178     }
 179 }
 180
 181 set see1 0
 182 set see2 0
 183 set see3 0
 184 set see4 0
 185 set see5 0
 186 set see6 0
 187
 188 gdb_test_multiple "info break 3-5" "info break 3-5" {
 189     -re "1\[\t \]+breakpoint *keep y.* in main at .*:$main_line\[^\r\n\]*" {
 190         set see1 1
 191         exp_continue
 192     }
 193     -re "2\[\t \]+breakpoint *keep y\[^\r\n\]* in marker2 at \[^\r\n\]*" {
 194         set see2 1
 195         exp_continue
 196     }
 197     -re "3\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location7\[^\r\n\]*" {
 198         set see3 1
 199         exp_continue
 200     }
 201     -re "4\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 202         set see4 1
 203         exp_continue
 204     }
 205     -re "5\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 206         set see5 1
 207         exp_continue
 208     }
 209     -re "6\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location2\[^\r\n\]*" {
 210         set see6 1
 211         exp_continue
 212     }
 213     -re ".*$gdb_prompt $" {
 214         if { !$see1 && !$see2 && $see3 && $see4 && $see5 && !$see6 } then {
 215             pass "info break 3-5"
 216         } else {
 217             fail "info break 3-5"
 218         }
 219     }
 220 }
 221
 222 #
 223 # Test disable/enable with arguments
 224 #
 225
 226 # Test with value history
 227
 228 gdb_test "print 1" "" ""
 229 gdb_test "print 2" "" ""
 230 gdb_test "print 3" "" ""
 231 gdb_test "print 4" "" ""
 232 gdb_test "print 5" "" ""
 233 gdb_test "print 6" "" ""
 234
 235 # $2 is 2 and $$ is 5
 236 gdb_test_no_output "disable \$2 \$\$" "disable using history values"
 237
 238 set see1 0
 239 set see2 0
 240 set see3 0
 241 set see4 0
 242 set see5 0
 243 set see6 0
 244
 245 gdb_test_multiple "info break" "check disable with history values" {
 246     -re "1\[\t \]+breakpoint *keep y.* in main at .*:$main_line\[^\r\n\]*" {
 247         set see1 1
 248         exp_continue
 249     }
 250     -re "2\[\t \]+breakpoint *keep n\[^\r\n\]* in marker2 at \[^\r\n\]*" {
 251         set see2 1
 252         exp_continue
 253     }
 254     -re "3\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location7\[^\r\n\]*" {
 255         set see3 1
 256         exp_continue
 257     }
 258     -re "4\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 259         set see4 1
 260         exp_continue
 261     }
 262     -re "5\[\t \]+breakpoint *keep n\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 263         set see5 1
 264         exp_continue
 265     }
 266     -re "6\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location2\[^\r\n\]*" {
 267         set see6 1
 268         exp_continue
 269     }
 270     -re ".*$gdb_prompt $" {
 271         if { $see1 && $see2 && $see3 && $see4 && $see5 && $see6 } then {
 272             pass "check disable with history values"
 273         } else {
 274             fail "check disable with history values"
 275         }
 276     }
 277 }
 278
 279 gdb_test "enable" "" ""
 280 gdb_test "set \$foo = 3" "" ""
 281 gdb_test "set \$bar = 6" "" ""
 282 gdb_test_no_output "disable \$foo \$bar" "disable with convenience values"
 283
 284 set see1 0
 285 set see2 0
 286 set see3 0
 287 set see4 0
 288 set see5 0
 289 set see6 0
 290
 291 gdb_test_multiple "info break" "check disable with convenience values" {
 292     -re "1\[\t \]+breakpoint *keep y.* in main at .*:$main_line\[^\r\n\]*" {
 293         set see1 1
 294         exp_continue
 295     }
 296     -re "2\[\t \]+breakpoint *keep y\[^\r\n\]* in marker2 at \[^\r\n\]*" {
 297         set see2 1
 298         exp_continue
 299     }
 300     -re "3\[\t \]+breakpoint *keep n\[^\r\n\]*$bp_location7\[^\r\n\]*" {
 301         set see3 1
 302         exp_continue
 303     }
 304     -re "4\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 305         set see4 1
 306         exp_continue
 307     }
 308     -re "5\[\t \]+breakpoint *keep y\[^\r\n\]*$bp_location1\[^\r\n\]*" {
 309         set see5 1
 310         exp_continue
 311     }
 312     -re "6\[\t \]+breakpoint *keep n\[^\r\n\]*$bp_location2\[^\r\n\]*" {
 313         set see6 1
 314         exp_continue
 315     }
 316     -re ".*$gdb_prompt $" {
 317         if { $see1 && $see2 && $see3 && $see4 && $see5 && $see6 } then {
 318             pass "check disable with convenience values"
 319         } else {
 320             fail "check disable with convenience values"
 321         }
 322     }
 323 }
 324
 325 # test with bad values
 326
 327 gdb_test "enable" "" ""
 328 gdb_test "disable 10" "No breakpoint number 10." \
 329     "disable non-existent breakpoint 10"
 330
 331 gdb_test_no_output "set \$baz = 1.234"
 332 gdb_test "disable \$baz" \
 333     "Convenience variable must have integer value.*" \
 334     "disable with non-integer convenience var"
 335 gdb_test "disable \$grbx" \
 336     "Convenience variable must have integer value.*" \
 337     "disable with non-existent convenience var"
 338 gdb_test "disable \$10" \
 339     "History has not yet reached .10." \
 340     "disable with non-existent history value"
 341 gdb_test "disable \$1foo" \
 342     "Convenience variable must have integer value.*" \
 343     "disable with badly formed history value"
 344
 345 # FIXME: The rest of this test doesn't work with anything that can't
 346 # handle arguments.
 347 # Huh? There doesn't *appear* to be anything that passes arguments
 348 # below.
 349
 350 #
 351 # run until the breakpoint at main is hit. For non-stubs-using targets.
 352 #
 353 gdb_run_cmd
 354 gdb_test "" \
 355     "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*" \
 356     "run until function breakpoint"
 357
 358 # Test the 'list' commands sets current file for the 'break LINENO' command.
 359 set bp_marker1 [gdb_get_line_number "set breakpoint 15 here" ${srcfile1}]
 360 gdb_test "list marker1" ".*"
 361 gdb_test "break $bp_marker1" "Breakpoint \[0-9\]+ at 0x\[0-9a-f\]+: file .*${srcfile1}, line ${bp_marker1}\\." \
 362          "break lineno"
 363 gdb_test_no_output {delete $bpnum}
 364
 365 #
 366 # run until the breakpoint at a line number
 367 #
 368 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 369                         "run until breakpoint set at a line number"
 370
 371 #
 372 # Run until the breakpoint set in a function in a file
 373 #
 374 for {set i 6} {$i >= 1} {incr i -1} {
 375         gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:$bp_location7.*$bp_location7\[\t \]+.*if .value > 1. \{.*" \
 376                         "run until file:function($i) breakpoint"
 377 }
 378
 379 #
 380 # Run until the breakpoint set at a quoted function
 381 #
 382 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, (0x\[0-9a-f\]+ in )?marker2 \\(a=43\\) at .*$srcfile1:$bp_location8.*" \
 383                 "run until quoted breakpoint"
 384 #
 385 # run until the file:function breakpoint at a line number in a file
 386 #
 387 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location2.*$bp_location2\[\t \]+argc = \\(argc == 12345\\);.*" \
 388                 "run until file:linenum breakpoint"
 389
 390 # Test break at offset +1
 391 set bp_location10 [gdb_get_line_number "set breakpoint 10 here"]
 392
 393 gdb_test "break +1" \
 394     "Breakpoint.*at.* file .*$srcfile, line $bp_location10\\." \
 395     "breakpoint offset +1"
 396
 397 # Check to see if breakpoint is hit when stepped onto
 398
 399 gdb_test "step" \
 400     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10.*$bp_location10\[\t \]+return argc;.*breakpoint 10 here.*" \
 401     "step onto breakpoint"
 402
 403 # Check to see if breakpoint can be set on ending brace of function
 404 set bp_location10a [gdb_get_line_number "set breakpoint 10a here"]
 405
 406 gdb_test "break $bp_location10a" \
 407     "Breakpoint.*at.* file .*$srcfile, line $bp_location10a\\." \
 408     "setting breakpoint at }"
 409
 410 gdb_test "continue" \
 411     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10a.*$bp_location10a\[\t \]+}.*breakpoint 10a here.*" \
 412     "continue to breakpoint at }"
 413
 414 #
 415 # delete all breakpoints so we can start over, course this can be a test too
 416 #
 417 delete_breakpoints
 418
 419 #
 420 # test temporary breakpoint at function
 421 #
 422
 423 gdb_test "tbreak main" "Temporary breakpoint.*at.* file .*$srcfile, line.*" "temporary breakpoint function"
 424
 425 #
 426 # test break at function in file
 427 #
 428
 429 gdb_test "tbreak $srcfile:factorial" "Temporary breakpoint.*at.* file .*$srcfile, line.*" \
 430         "Temporary breakpoint function in file"
 431
 432 #
 433 # test break at line number
 434 #
 435 gdb_test "tbreak $bp_location1" \
 436     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location1.*" \
 437     "temporary breakpoint line number #1"
 438
 439 gdb_test "tbreak $bp_location6" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location6.*" "temporary breakpoint line number #2"
 440
 441 #
 442 # test break at line number in file
 443 #
 444 gdb_test "tbreak $srcfile:$bp_location2" \
 445     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location2.*" \
 446     "temporary breakpoint line number in file #1"
 447
 448 set bp_location11 [gdb_get_line_number "set breakpoint 11 here"]
 449 gdb_test  "tbreak $srcfile:$bp_location11" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location11.*" "Temporary breakpoint line number in file #2"
 450
 451 #
 452 # check to see what breakpoints are set (temporary this time)
 453 #
 454 gdb_test "info break" "Num     Type.*Disp Enb Address.*What.*\[\r\n\]
 455 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$main_line.*\[\r\n\]
 456 \[0-9\]+\[\t \]+breakpoint     del.*y.*in factorial at .*$srcfile:$bp_location7.*\[\r\n\]
 457 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location1.*\[\r\n\]
 458 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location6.*\[\r\n\]
 459 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location2.*\[\r\n\]
 460 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location11.*" \
 461     "Temporary breakpoint info"
 462
 463
 464 #***********
 465
 466 # Verify that catchpoints for fork, vfork and exec don't trigger
 467 # inappropriately.  (There are no calls to those system functions
 468 # in this test program.)
 469 #
 470 if ![runto_main] then { fail "break tests suppressed" }
 471
 472 gdb_test "catch fork" "Catchpoint \[0-9\]+ \\(fork\\)" \
 473     "set catch fork, never expected to trigger"
 474
 475 gdb_test "catch vfork" "Catchpoint \[0-9\]+ \\(vfork\\)" \
 476     "set catch vfork, never expected to trigger"
 477
 478 gdb_test "catch exec" "Catchpoint \[0-9\]+ \\(exec\\)" \
 479     "set catch exec, never expected to trigger"
 480
 481 # Verify that GDB responds gracefully when asked to set a breakpoint
 482 # on a nonexistent source line.
 483 #
 484 gdb_test_no_output "set breakpoint pending off"
 485 gdb_test "break 999" \
 486     "No line 999 in the current file." \
 487     "break on non-existent source line"
 488
 489 # Run to the desired default location. If not positioned here, the
 490 # tests below don't work.
 491 #
 492 gdb_test "until $bp_location1" "main .* at .*:$bp_location1.*" \
 493     "until bp_location1"
 494
 495 # Verify that GDB allows one to just say "break", which is treated
 496 # as the "default" breakpoint.  Note that GDB gets cute when printing
 497 # the informational message about other breakpoints at the same
 498 # location.  We'll hit that bird with this stone too.
 499 #
 500 gdb_test "break" "Breakpoint \[0-9\]*.*" \
 501     "break on default location, 1st time"
 502
 503 gdb_test "break" \
 504     "Note: breakpoint \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 505     "break on default location, 2nd time"
 506
 507 gdb_test "break" \
 508     "Note: breakpoints \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 509     "break on default location, 3rd time"
 510
 511 gdb_test "break" \
 512     "Note: breakpoints \[0-9\]*, \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 513     "break on default location, 4th time"
 514
 515 # Verify that a "silent" breakpoint can be set, and that GDB is indeed
 516 # "silent" about its triggering.
 517 #
 518 if ![runto_main] then { fail "break tests suppressed" }
 519
 520 gdb_test_multiple "break $bp_location1" \
 521     "set to-be-silent break bp_location1" {
 522         -re "Breakpoint (\[0-9\]*) at .*, line $bp_location1.*$gdb_prompt $" {
 523             pass "set to-be-silent break bp_location1"
 524         }
 525     }
 526
 527 gdb_test "commands $expect_out(1,string)\nsilent\nend" ">end" "set silent break bp_location1"
 528
 529 gdb_test "info break $expect_out(1,string)" \
 530     "\[0-9\]*\[ \t\]*breakpoint.*:$bp_location1\r\n\[ \t\]*silent.*" \
 531     "info silent break bp_location1"
 532
 533 gdb_test "continue" "Continuing." \
 534     "hit silent break bp_location1"
 535
 536 gdb_test "bt" "#0  main .* at .*:$bp_location1.*" \
 537     "stopped for silent break bp_location1"
 538
 539 # Verify that GDB can at least parse a breakpoint with the
 540 # "thread" keyword.  (We won't attempt to test here that a
 541 # thread-specific breakpoint really triggers appropriately.
 542 # The gdb.threads subdirectory contains tests for that.)
 543 #
 544 set bp_location12 [gdb_get_line_number "set breakpoint 12 here"]
 545 gdb_test "break $bp_location12 thread 999" "Unknown thread 999.*" \
 546     "thread-specific breakpoint on non-existent thread disallowed"
 547
 548 gdb_test "break $bp_location12 thread foo" \
 549     "Invalid thread ID: foo" \
 550     "thread-specific breakpoint on bogus thread ID disallowed"
 551
 552 # Verify that GDB responds gracefully to a breakpoint command with
 553 # trailing garbage.
 554 #
 555 gdb_test "break $bp_location12 foo" \
 556     "malformed linespec error: unexpected string, \"foo\".*" \
 557     "breakpoint with trailing garbage disallowed"
 558
 559 # Verify that GDB responds gracefully to a "clear" command that has
 560 # no matching breakpoint.  (First, get us off the current source line,
 561 # which we know has a breakpoint.)
 562 #
 563 gdb_test "next" "marker1.*" "step over breakpoint"
 564
 565 gdb_test "clear 81" "No breakpoint at 81.*" \
 566     "clear line has no breakpoint disallowed"
 567
 568 gdb_test "clear" "No breakpoint at this line.*" \
 569     "clear current line has no breakpoint disallowed"
 570
 571 # Verify that we can set and clear multiple breakpoints.
 572 #
 573 # We don't test that it deletes the correct breakpoints.  We do at
 574 # least test that it deletes more than one breakpoint.
 575 #
 576 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #1"
 577 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #2"
 578 gdb_test "clear marker3" {Deleted breakpoints [0-9]+ [0-9]+.*}
 579
 580 # Verify that a breakpoint can be set via a convenience variable.
 581 #
 582
 583 with_test_prefix "set line breakpoint via convenience variable" {
 584     gdb_test_no_output "set \$foo=$bp_location11" \
 585         "set convenience variable \$foo to bp_location11"
 586
 587     gdb_test "break \$foo" \
 588         "Breakpoint (\[0-9\]*) at .*, line $bp_location11.*"
 589
 590     # Verify that GDB responds gracefully to an attempt to set a
 591     # breakpoint via a convenience variable whose type is not integer.
 592     #
 593
 594     gdb_test_no_output "set \$foo=81.5" \
 595         "set convenience variable \$foo to 81.5"
 596
 597     gdb_test "break \$foo" \
 598         "Convenience variables used in line specs must have integer values.*" \
 599         "non-integer convenience variable disallowed"
 600 }
 601
 602 # Verify that we can set and trigger a breakpoint in a user-called function.
 603 #
 604 gdb_test "break marker2" \
 605     "Breakpoint (\[0-9\]*) at .*, line $bp_location8.*" \
 606     "set breakpoint on to-be-called function"
 607
 608 gdb_test "print marker2(99)" \
 609     "The program being debugged stopped while in a function called from GDB.\r\nEvaluation of the expression containing the function\r\n.marker2. will be abandoned.\r\nWhen the function is done executing, GDB will silently stop.*" \
 610     "hit breakpoint on called function"
 611
 612 # As long as we're stopped (breakpointed) in a called function,
 613 # verify that we can successfully backtrace & such from here.
 614 gdb_test "bt" \
 615     "#0\[ \t\]*($hex in )?marker2.*:$bp_location8\r\n#1\[ \t\]*<function called from gdb>.*" \
 616     "backtrace while in called function"
 617
 618 # Return from the called function.  For remote targets, it's important to do
 619 # this before runto_main, which otherwise may silently stop on the dummy
 620 # breakpoint inserted by GDB at the program's entry point.
 621 #
 622 gdb_test_multiple "finish" "finish from called function" {
 623     -re "Run till exit from .*marker2.* at .*$bp_location8\r\n.*function called from gdb.*$gdb_prompt $" {
 624         pass "finish from called function"
 625     }
 626     -re "Run till exit from .*marker2.* at .*$bp_location8\r\n.*Value returned.*$gdb_prompt $" {
 627         pass "finish from called function"
 628     }
 629 }
 630
 631 # Verify that GDB responds gracefully to a "finish" command with
 632 # arguments.
 633 #
 634 if ![runto_main] then { fail "break tests suppressed" }
 635
 636 send_gdb "finish 123\n"
 637 gdb_expect {
 638   -re "The \"finish\" command does not take any arguments.\r\n$gdb_prompt $"\
 639           {pass "finish with arguments disallowed"}
 640   -re "$gdb_prompt $"\
 641           {fail "finish with arguments disallowed"}
 642   timeout {fail "(timeout) finish with arguments disallowed"}
 643 }
 644
 645 # Verify that GDB responds gracefully to a request to "finish" from
 646 # the outermost frame.  On a stub that never exits, this will just
 647 # run to the stubs routine, so we don't get this error...  Thus the
 648 # second condition.
 649 #
 650
 651 gdb_test_multiple "finish" "finish from outermost frame disallowed" {
 652     -re "\"finish\" not meaningful in the outermost frame.\r\n$gdb_prompt $" {
 653         pass "finish from outermost frame disallowed"
 654     }
 655     -re "Run till exit from.*\r\n$gdb_prompt $" {
 656         pass "finish from outermost frame disallowed"
 657     }
 658 }
 659
 660 #********
 661
 662
 663 #
 664 # Test "next" over recursive function call.
 665 #
 666
 667 proc test_next_with_recursion {} {
 668     global gdb_prompt
 669     global decimal
 670     global binfile
 671
 672     gdb_test "kill" "" "kill program" "Kill the program being debugged.*y or n. $" "y"
 673     delete_breakpoints
 674
 675     gdb_test "break factorial" "Breakpoint $decimal at .*" "break at factorial"
 676
 677     # Run until we call factorial with 6
 678
 679     gdb_run_cmd
 680     gdb_test "" "Break.* factorial .value=6. .*" "run to factorial(6)"
 681
 682     # Continue until we call factorial recursively with 5.
 683
 684     if [gdb_test "continue" \
 685         "Continuing.*Break.* factorial .value=5. .*" \
 686         "continue to factorial(5)"] then { gdb_suppress_tests }
 687
 688     # Do a backtrace just to confirm how many levels deep we are.
 689
 690     if [gdb_test "backtrace" \
 691         "#0\[ \t\]+ factorial .value=5..*" \
 692         "backtrace from factorial(5)"] then { gdb_suppress_tests }
 693
 694     # Now a "next" should position us at the recursive call, which
 695     # we will be performing with 4.
 696
 697     if [gdb_test "next" \
 698         ".* factorial .value - 1.;.*" \
 699         "next to recursive call"] then { gdb_suppress_tests }
 700
 701     # Disable the breakpoint at the entry to factorial by deleting them all.
 702     # The "next" should run until we return to the next line from this
 703     # recursive call to factorial with 4.
 704     # Buggy versions of gdb will stop instead at the innermost frame on
 705     # the line where we are trying to "next" to.
 706
 707     delete_breakpoints
 708
 709     if [istarget "mips*tx39-*"] {
 710         set timeout 60
 711     }
 712     # We used to set timeout here for all other targets as well.  This
 713     # is almost certainly wrong.  The proper timeout depends on the
 714     # target system in use, and how we communicate with it, so there
 715     # is no single value appropriate for all targets.  The timeout
 716     # should be established by the Dejagnu config file(s) for the
 717     # board, and respected by the test suite.
 718     #
 719     # For example, if I'm running GDB over an SSH tunnel talking to a
 720     # portmaster in California talking to an ancient 68k board running
 721     # a crummy ROM monitor (a situation I can only wish were
 722     # hypothetical), then I need a large timeout.  But that's not the
 723     # kind of knowledge that belongs in this file.
 724
 725     gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \
 726             "next over recursive call"
 727
 728     # OK, we should be back in the same stack frame we started from.
 729     # Do a backtrace just to confirm.
 730
 731     set result [gdb_test "backtrace" \
 732             "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \
 733             "backtrace from factorial(5.1)"]
 734     if { $result != 0 } { gdb_suppress_tests }
 735
 736     if [target_info exists gdb,noresults] { gdb_suppress_tests }
 737   gdb_continue_to_end "recursive next test"
 738    gdb_stop_suppressing_tests
 739 }
 740
 741 test_next_with_recursion
 742
 743
 744 #********
 745
 746 # build a new file with optimization enabled so that we can try breakpoints
 747 # on targets with optimized prologues
 748
 749 if { [prepare_for_testing "failed to prepare" "breako2" {break.c break1.c} {debug nowarnings optimize=-O2}] } {
 750     return -1
 751 }
 752
 753 #
 754 # test break at function
 755 #
 756 gdb_test "break main" \
 757     "Breakpoint.*at.* file .*, line.*" \
 758     "breakpoint function, optimized file"
 759
 760 #
 761 # test break at function
 762 #
 763 gdb_test "break marker4" \
 764     "Breakpoint.*at.* file .*$srcfile1, line.*" \
 765     "breakpoint small function, optimized file"
 766
 767 #
 768 # run until the breakpoint at main is hit. For non-stubs-using targets.
 769 #
 770 gdb_run_cmd
 771
 772 set test "run until function breakpoint, optimized file"
 773 gdb_test_multiple "" $test {
 774     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
 775         pass $test
 776     }
 777     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $" {
 778         pass "$test (code motion)"
 779     }
 780 }
 781
 782 #
 783 # run until the breakpoint at a small function
 784 #
 785
 786 #
 787 # Add a second pass pattern.  The behavior differs here between stabs
 788 # and dwarf for one-line functions.  Stabs preserves two line symbols
 789 # (one before the prologue and one after) with the same line number,
 790 # but dwarf regards these as duplicates and discards one of them.
 791 # Therefore the address after the prologue (where the breakpoint is)
 792 # has no exactly matching line symbol, and GDB reports the breakpoint
 793 # as if it were in the middle of a line rather than at the beginning.
 794
 795 set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile1]
 796
 797 gdb_test_multiple "continue" \
 798     "run until breakpoint set at small function, optimized file" {
 799         -re "Breakpoint $decimal, marker4 \\(d=(d@entry=)?177601976\\) at .*$srcfile1:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
 800             pass "run until breakpoint set at small function, optimized file (line bp_location14)"
 801         }
 802         -re "Breakpoint $decimal, factorial \\(.*\\) .*\{\r\n$gdb_prompt" {
 803             # GCC 4.3 emits bad line number information - see gcc/36748.
 804             if { [test_compiler_info "gcc-4-3-*"] } {
 805                 setup_xfail *-*-*
 806             }
 807             fail "run until breakpoint set at small function, optimized file"
 808         }
 809     }
 810
 811 clean_restart breako2
 812
 813 #
 814 # test that 'rbreak' on a symbol that may be from a shared library doesn't
 815 # cause a "Junk at end of arguments." error.
 816 #
 817 # On x86 GNU/Linux, this test will choke on e.g. __libc_start_main@plt.
 818 #
 819 # Note that this test won't necessarily choke on all targets even if
 820 # all the rbreak issue is present.  rbreak needs to match and set a
 821 # breakpoint on a symbol causes 'break' to choke.
 822 #
 823
 824 gdb_test_no_output "set breakpoint pending on" "rbreak junk pending setup"
 825
 826 # We expect at least one breakpoint to be set when we "rbreak main".
 827 gdb_test "rbreak main" \
 828     ".*Breakpoint.*at.* file .*$srcfile, line.*" \
 829     "rbreak junk set breakpoint"
 830
 831 # Run to a breakpoint.  Fail if we see "Junk at end of arguments".
 832 gdb_run_cmd
 833
 834 set test "rbreak junk"
 835 gdb_test_multiple "" $test {
 836     -re "Junk at end of arguments" {
 837         fail $test
 838     }
 839     -re ".*Breakpoint \[0-9\]+,.*$gdb_prompt $" {
 840         pass $test
 841     }
 842 }
 843
 844 #
 845 # Test break via convenience variable with file name
 846 #
 847
 848 with_test_prefix "set line:file breakpoint via convenience variable" {
 849     set line [gdb_get_line_number "set breakpoint 1 here"]
 850     gdb_test_no_output "set \$l = $line"
 851
 852     set line_actual "-1"
 853     set test "break ${srcfile}:\$l"
 854     gdb_test_multiple "$test" $test {
 855         -re "Breakpoint $decimal at $hex: file .*break\\.c, line ($decimal)\\.\r\n$gdb_prompt $" {
 856             # Save the actual line number on which the breakpoint was
 857             # actually set. On some systems (Eg: Ubuntu 16.04 with GCC
 858             # version 5.4.0), that line gets completely inlined, including
 859             # the call to printf, and so we end up inserting the breakpoint
 860             # on one of the following lines instead.
 861             set line_actual $expect_out(1,string)
 862             pass $test
 863         }
 864     }
 865
 866     gdb_test_no_output "set \$foo=81.5" \
 867         "set convenience variable \$foo to 81.5"
 868     gdb_test "break $srcfile:\$foo" \
 869         "Convenience variables used in line specs must have integer values.*" \
 870         "non-integer convenience variable disallowed"
 871 }
 872
 873 #
 874 # Test that commands can be cleared without error.
 875 #
 876
 877 gdb_test "commands\nprint 232323\nend" ">end" "set some breakpoint commands"
 878 gdb_test "commands\nend" ">end" "clear breakpoint commands"
 879 # We verify that the commands were cleared by ensuring that the last
 880 # breakpoint's location ends the output -- if there were commands,
 881 # they would have been printed after the location.
 882 gdb_test "info break" "$srcfile:$line_actual" "verify that they were cleared"