gdb/testsuite/gdb.base/break.exp

   1 #   Copyright 1988, 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999,
   2 #   2000, 2002, 2003, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 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, see <http://www.gnu.org/licenses/>.
  16
  17 # This file was written by Rob Savoye. (rob@cygnus.com)
  18
  19 if { [prepare_for_testing break.exp "break" {break.c break1.c} {debug nowarnings}] } {
  20     return -1
  21 }
  22 set srcfile break.c
  23 set srcfile1 break1.c
  24 #
  25 # test simple breakpoint setting commands
  26 #
  27
  28 # Test deleting all breakpoints when there are none installed,
  29 # GDB should not prompt for confirmation.
  30 # Note that lib/gdb.exp provides a "delete_breakpoints" proc
  31 # for general use elsewhere.
  32
  33 send_gdb "delete breakpoints\n"
  34 gdb_expect {
  35      -re "Delete all breakpoints.*$" {
  36             send_gdb "y\n"
  37             gdb_expect {
  38                 -re "$gdb_prompt $" {
  39                     fail "Delete all breakpoints when none (unexpected prompt)"
  40                 }
  41                 timeout { fail "Delete all breakpoints when none (timeout after unexpected prompt)" }
  42             }
  43         }
  44      -re ".*$gdb_prompt $"       { pass "Delete all breakpoints when none" }
  45     timeout                 { fail "Delete all breakpoints when none (timeout)" }
  46 }
  47
  48 #
  49 # test break at function
  50 #
  51 gdb_test "break main" \
  52     "Breakpoint.*at.* file .*$srcfile, line.*" \
  53     "breakpoint function"
  54
  55 #
  56 # test break at quoted function
  57 #
  58 gdb_test "break \"marker2\"" \
  59     "Breakpoint.*at.* file .*$srcfile1, line.*" \
  60     "breakpoint quoted function"
  61
  62 #
  63 # test break at function in file
  64 #
  65 gdb_test "break $srcfile:factorial" \
  66     "Breakpoint.*at.* file .*$srcfile, line.*" \
  67     "breakpoint function in file"
  68
  69 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
  70
  71 #
  72 # test break at line number
  73 #
  74 # Note that the default source file is the last one whose source text
  75 # was printed.  For native debugging, before we've executed the
  76 # program, this is the file containing main, but for remote debugging,
  77 # it's wherever the processor was stopped when we connected to the
  78 # board.  So, to be sure, we do a list command.
  79 #
  80 gdb_test "list main" \
  81     ".*main \\(argc, argv, envp\\).*" \
  82     "use `list' to establish default source file"
  83 gdb_test "break $bp_location1" \
  84     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \
  85     "breakpoint line number"
  86
  87 #
  88 # test duplicate breakpoint
  89 #
  90 gdb_test "break $bp_location1" \
  91     "Note: breakpoint \[0-9\]+ also set at pc.*Breakpoint \[0-9\]+ at.* file .*$srcfile, line $bp_location1\\." \
  92     "breakpoint duplicate"
  93
  94 set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
  95
  96 #
  97 # test break at line number in file
  98 #
  99 gdb_test "break $srcfile:$bp_location2" \
 100     "Breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \
 101     "breakpoint line number in file"
 102
 103 set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
 104 set bp_location4 [gdb_get_line_number "set breakpoint 4 here"]
 105
 106 #
 107 # Test putting a break at the start of a multi-line if conditional.
 108 # Verify the breakpoint was put at the start of the conditional.
 109 #
 110 gdb_test "break multi_line_if_conditional" \
 111     "Breakpoint.*at.* file .*$srcfile, line $bp_location3\\." \
 112     "breakpoint at start of multi line if conditional"
 113
 114 gdb_test "break multi_line_while_conditional" \
 115     "Breakpoint.*at.* file .*$srcfile, line $bp_location4\\." \
 116     "breakpoint at start of multi line while conditional"
 117
 118 set bp_location5 [gdb_get_line_number "set breakpoint 5 here"]
 119 set bp_location6 [gdb_get_line_number "set breakpoint 6 here"]
 120
 121 #
 122 # check to see what breakpoints are set
 123 #
 124 if [target_info exists gdb_stub] {
 125     set main_line $bp_location5
 126 } else {
 127     set main_line $bp_location6
 128 }
 129
 130 if {$hp_aCC_compiler} {
 131     set proto "\\(int\\)"
 132 } else {
 133     set proto ""
 134 }
 135
 136 set bp_location7 [gdb_get_line_number "set breakpoint 7 here"]
 137 set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
 138 set bp_location9 [gdb_get_line_number "set breakpoint 9 here" $srcfile1]
 139
 140 gdb_test "info break" \
 141     "Num     Type\[ \]+Disp Enb Address\[ \]+What.*
 142 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$main_line.*
 143 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2 at .*$srcfile1:($bp_location8|$bp_location9).*
 144 \[0-9\]+\[\t \]+breakpoint     keep y.* in factorial$proto at .*$srcfile:$bp_location7.*
 145 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 146 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location1.*
 147 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location2.*
 148 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_if_conditional at .*$srcfile:$bp_location3.*
 149 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_while_conditional at .*$srcfile:$bp_location4" \
 150     "breakpoint info"
 151
 152 # FIXME: The rest of this test doesn't work with anything that can't
 153 # handle arguments.
 154 # Huh? There doesn't *appear* to be anything that passes arguments
 155 # below.
 156 if [istarget "mips-idt-*"] then {
 157     return
 158 }
 159
 160 #
 161 # run until the breakpoint at main is hit. For non-stubs-using targets.
 162 #
 163 gdb_run_cmd
 164 gdb_expect {
 165     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
 166         pass "run until function breakpoint"
 167     }
 168     -re "$gdb_prompt $" {
 169         fail "run until function breakpoint"
 170     }
 171     timeout {
 172         fail "run until function breakpoint (timeout)"
 173     }
 174 }
 175
 176 #
 177 # run until the breakpoint at a line number
 178 #
 179 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 180                         "run until breakpoint set at a line number"
 181
 182 #
 183 # Run until the breakpoint set in a function in a file
 184 #
 185 for {set i 6} {$i >= 1} {incr i -1} {
 186         gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:$bp_location7.*$bp_location7\[\t \]+.*if .value > 1. \{.*" \
 187                         "run until file:function($i) breakpoint"
 188 }
 189
 190 #
 191 # Run until the breakpoint set at a quoted function
 192 #
 193 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, (0x\[0-9a-f\]+ in )?marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*" \
 194                 "run until quoted breakpoint"
 195 #
 196 # run until the file:function breakpoint at a line number in a file
 197 #
 198 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location2.*$bp_location2\[\t \]+argc = \\(argc == 12345\\);.*" \
 199                 "run until file:linenum breakpoint"
 200
 201 # Test break at offset +1
 202 set bp_location10 [gdb_get_line_number "set breakpoint 10 here"]
 203
 204 gdb_test "break +1" \
 205     "Breakpoint.*at.* file .*$srcfile, line $bp_location10\\." \
 206     "breakpoint offset +1"
 207
 208 # Check to see if breakpoint is hit when stepped onto
 209
 210 gdb_test "step" \
 211     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10.*$bp_location10\[\t \]+return argc;.*breakpoint 10 here.*" \
 212     "step onto breakpoint"
 213
 214 # Check to see if breakpoint can be set on ending brace of function
 215 set bp_location10a [gdb_get_line_number "set breakpoint 10a here"]
 216
 217 gdb_test "break $bp_location10a" \
 218     "Breakpoint.*at.* file .*$srcfile, line $bp_location10a\\." \
 219     "setting breakpoint at }"
 220
 221 gdb_test "continue" \
 222     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10a.*$bp_location10a\[\t \]+}.*breakpoint 10a here.*" \
 223     "continue to breakpoint at }"
 224
 225 #
 226 # delete all breakpoints so we can start over, course this can be a test too
 227 #
 228 delete_breakpoints
 229
 230 #
 231 # test temporary breakpoint at function
 232 #
 233
 234 gdb_test "tbreak main" "Temporary breakpoint.*at.* file .*$srcfile, line.*" "Temporary breakpoint function"
 235
 236 #
 237 # test break at function in file
 238 #
 239
 240 gdb_test "tbreak $srcfile:factorial" "Temporary breakpoint.*at.* file .*$srcfile, line.*" \
 241         "Temporary breakpoint function in file"
 242
 243 #
 244 # test break at line number
 245 #
 246 gdb_test "tbreak $bp_location1" \
 247     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location1.*" \
 248     "Temporary breakpoint line number #1"
 249
 250 gdb_test "tbreak $bp_location6" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location6.*" "Temporary breakpoint line number #2"
 251
 252 #
 253 # test break at line number in file
 254 #
 255 gdb_test "tbreak $srcfile:$bp_location2" \
 256     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location2.*" \
 257     "Temporary breakpoint line number in file #1"
 258
 259 set bp_location11 [gdb_get_line_number "set breakpoint 11 here"]
 260 gdb_test  "tbreak $srcfile:$bp_location11" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location11.*" "Temporary breakpoint line number in file #2"
 261
 262 #
 263 # check to see what breakpoints are set (temporary this time)
 264 #
 265 gdb_test "info break" "Num     Type.*Disp Enb Address.*What.*\[\r\n\]
 266 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$main_line.*\[\r\n\]
 267 \[0-9\]+\[\t \]+breakpoint     del.*y.*in factorial$proto at .*$srcfile:$bp_location7.*\[\r\n\]
 268 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location1.*\[\r\n\]
 269 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location6.*\[\r\n\]
 270 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location2.*\[\r\n\]
 271 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location11.*" \
 272     "Temporary breakpoint info"
 273
 274
 275 #***********
 276
 277 # Verify that catchpoints for fork, vfork and exec don't trigger
 278 # inappropriately.  (There are no calls to those system functions
 279 # in this test program.)
 280 #
 281 if ![runto_main] then { fail "break tests suppressed" }
 282
 283 gdb_test "catch" \
 284     "Catch requires an event name." \
 285     "catch requires an event name"
 286
 287
 288 set name "set catch fork, never expected to trigger"
 289 gdb_test_multiple "catch fork" "$name" {
 290     -re "Catchpoint \[0-9\]* .fork..*$gdb_prompt $" {
 291         pass $name
 292     }
 293     -re "Catch of fork not yet implemented.*$gdb_prompt $" {
 294         pass $name
 295     }
 296 }
 297
 298
 299 # If we are on HP-UX 10.20, we expect an error message to be
 300 # printed if we type "catch vfork" at the gdb gdb_prompt.  This is
 301 # because on HP-UX 10.20, we cannot catch vfork events.
 302
 303 set name "set catch vfork, never expected to trigger"
 304
 305 if [istarget "hppa*-hp-hpux10.20"] then {
 306     gdb_test "catch vfork" \
 307         "Catch of vfork events not supported on HP-UX 10.20..*" \
 308         "$name"
 309 } else {
 310     gdb_test_multiple "catch vfork" "$name" {
 311         -re "Catchpoint \[0-9\]* .vfork..*$gdb_prompt $" {
 312             pass $name
 313         }
 314         -re "Catch of vfork not yet implemented.*$gdb_prompt $" {
 315             pass $name
 316         }
 317     }
 318 }
 319
 320 set name "set catch exec, never expected to trigger"
 321 gdb_test_multiple "catch exec" "$name" {
 322     -re "Catchpoint \[0-9\]* .exec..*$gdb_prompt $" {
 323         pass $name
 324     }
 325     -re "Catch of exec not yet implemented.*$gdb_prompt $" {
 326         pass $name
 327     }
 328 }
 329
 330 # Verify that GDB responds gracefully when asked to set a breakpoint
 331 # on a nonexistent source line.
 332 #
 333 gdb_test "break 999" \
 334     "No line 999 in file .*" \
 335     "break on non-existent source line"
 336
 337 # Run to the desired default location. If not positioned here, the
 338 # tests below don't work.
 339 #
 340 gdb_test "until $bp_location1" "main .* at .*:$bp_location1.*" \
 341     "until bp_location1"
 342
 343 # Verify that GDB allows one to just say "break", which is treated
 344 # as the "default" breakpoint.  Note that GDB gets cute when printing
 345 # the informational message about other breakpoints at the same
 346 # location.  We'll hit that bird with this stone too.
 347 #
 348 gdb_test "break" "Breakpoint \[0-9\]*.*" \
 349     "break on default location, 1st time"
 350
 351 gdb_test "break" \
 352     "Note: breakpoint \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 353     "break on default location, 2nd time"
 354
 355 gdb_test "break" \
 356     "Note: breakpoints \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 357     "break on default location, 3rd time"
 358
 359 gdb_test "break" \
 360     "Note: breakpoints \[0-9\]*, \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 361     "break on default location, 4th time"
 362
 363 # Verify that a "silent" breakpoint can be set, and that GDB is indeed
 364 # "silent" about its triggering.
 365 #
 366 if ![runto_main] then { fail "break tests suppressed" }
 367
 368 gdb_test_multiple "break $bp_location1" \
 369     "set to-be-silent break bp_location1" {
 370         -re "Breakpoint (\[0-9\]*) at .*, line $bp_location1.*$gdb_prompt $" {
 371             pass "set to-be-silent break bp_location1"
 372         }
 373     }
 374
 375 send_gdb "commands $expect_out(1,string)\n"
 376 send_gdb "silent\n"
 377 send_gdb "end\n"
 378 gdb_expect {
 379   -re ".*$gdb_prompt $"\
 380           {pass "set silent break bp_location1"}
 381   timeout {fail "(timeout) set silent break bp_location1"}
 382 }
 383
 384 gdb_test "info break $expect_out(1,string)" \
 385     "\[0-9\]*\[ \t\]*breakpoint.*:$bp_location1\r\n\[ \t\]*silent.*" \
 386     "info silent break bp_location1"
 387
 388 gdb_test "continue" "Continuing." \
 389     "hit silent break bp_location1"
 390
 391 gdb_test "bt" "#0  main .* at .*:$bp_location1.*" \
 392     "stopped for silent break bp_location1"
 393
 394 # Verify that GDB can at least parse a breakpoint with the
 395 # "thread" keyword.  (We won't attempt to test here that a
 396 # thread-specific breakpoint really triggers appropriately.
 397 # The gdb.threads subdirectory contains tests for that.)
 398 #
 399 set bp_location12 [gdb_get_line_number "set breakpoint 12 here"]
 400 gdb_test "break $bp_location12 thread 999" "Unknown thread 999.*" \
 401     "thread-specific breakpoint on non-existent thread disallowed"
 402
 403 gdb_test "break $bp_location12 thread foo" \
 404     "Junk after thread keyword.*" \
 405     "thread-specific breakpoint on bogus thread ID disallowed"
 406
 407 # Verify that GDB responds gracefully to a breakpoint command with
 408 # trailing garbage.
 409 #
 410 gdb_test "break $bp_location12 foo" \
 411     "Junk at end of arguments.*" \
 412     "breakpoint with trailing garbage disallowed"
 413
 414 # Verify that GDB responds gracefully to a "clear" command that has
 415 # no matching breakpoint.  (First, get us off the current source line,
 416 # which we know has a breakpoint.)
 417 #
 418 gdb_test "next" "marker1.*" "step over breakpoint"
 419
 420 gdb_test "clear 81" "No breakpoint at 81.*" \
 421     "clear line has no breakpoint disallowed"
 422
 423 gdb_test "clear" "No breakpoint at this line.*" \
 424     "clear current line has no breakpoint disallowed"
 425
 426 # Verify that we can set and clear multiple breakpoints.
 427 #
 428 # We don't test that it deletes the correct breakpoints.  We do at
 429 # least test that it deletes more than one breakpoint.
 430 #
 431 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #1"
 432 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #2"
 433 gdb_test "clear marker3" {Deleted breakpoints [0-9]+ [0-9]+.*}
 434
 435 # Verify that a breakpoint can be set via a convenience variable.
 436 #
 437 gdb_test_no_output "set \$foo=$bp_location11" \
 438     "set convenience variable \$foo to bp_location11"
 439
 440 gdb_test "break \$foo" \
 441     "Breakpoint (\[0-9\]*) at .*, line $bp_location11.*" \
 442     "set breakpoint via convenience variable"
 443
 444 # Verify that GDB responds gracefully to an attempt to set a
 445 # breakpoint via a convenience variable whose type is not integer.
 446 #
 447 gdb_test_no_output "set \$foo=81.5" \
 448     "set convenience variable \$foo to 81.5"
 449
 450 gdb_test "break \$foo" \
 451     "Convenience variables used in line specs must have integer values.*" \
 452     "set breakpoint via non-integer convenience variable disallowed"
 453
 454 # Verify that we can set and trigger a breakpoint in a user-called function.
 455 #
 456 gdb_test "break marker2" \
 457     "Breakpoint (\[0-9\]*) at .*, line ($bp_location8|$bp_location9).*" \
 458     "set breakpoint on to-be-called function"
 459
 460 gdb_test "print marker2(99)" \
 461     "The program being debugged stopped while in a function called from GDB.\r\nEvaluation of the expression containing the function\r\n.marker2$proto. will be abandoned.\r\nWhen the function is done executing, GDB will silently stop.*" \
 462     "hit breakpoint on called function"
 463
 464 # As long as we're stopped (breakpointed) in a called function,
 465 # verify that we can successfully backtrace & such from here.
 466 #
 467 # In this and the following test, the _sr4export check apparently is needed
 468 # for hppa*-*-hpux.
 469 #
 470 gdb_test_multiple "bt" "backtrace while in called function" {
 471     -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*_sr4export.*$gdb_prompt $" {
 472         pass "backtrace while in called function"
 473     }
 474     -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*function called from gdb.*$gdb_prompt $" {
 475         pass "backtrace while in called function"
 476     }
 477 }
 478
 479 # Return from the called function.  For remote targets, it's important to do
 480 # this before runto_main, which otherwise may silently stop on the dummy
 481 # breakpoint inserted by GDB at the program's entry point.
 482 #
 483 gdb_test_multiple "finish" "finish from called function" {
 484     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.* in _sr4export.*$gdb_prompt $" {
 485         pass "finish from called function"
 486     }
 487     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*function called from gdb.*$gdb_prompt $" {
 488         pass "finish from called function"
 489     }
 490     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*Value returned.*$gdb_prompt $" {
 491         pass "finish from called function"
 492     }
 493 }
 494
 495 # Verify that GDB responds gracefully to a "finish" command with
 496 # arguments.
 497 #
 498 if ![runto_main] then { fail "break tests suppressed" }
 499
 500 send_gdb "finish 123\n"
 501 gdb_expect {
 502   -re "The \"finish\" command does not take any arguments.\r\n$gdb_prompt $"\
 503           {pass "finish with arguments disallowed"}
 504   -re "$gdb_prompt $"\
 505           {fail "finish with arguments disallowed"}
 506   timeout {fail "(timeout) finish with arguments disallowed"}
 507 }
 508
 509 # Verify that GDB responds gracefully to a request to "finish" from
 510 # the outermost frame.  On a stub that never exits, this will just
 511 # run to the stubs routine, so we don't get this error...  Thus the
 512 # second condition.
 513 #
 514
 515 gdb_test_multiple "finish" "finish from outermost frame disallowed" {
 516     -re "\"finish\" not meaningful in the outermost frame.\r\n$gdb_prompt $" {
 517         pass "finish from outermost frame disallowed"
 518     }
 519     -re "Run till exit from.*\r\n$gdb_prompt $" {
 520         pass "finish from outermost frame disallowed"
 521     }
 522 }
 523
 524 # Verify that we can explicitly ask GDB to stop on all shared library
 525 # events, and that it does so.
 526 #
 527 if [istarget "hppa*-*-hpux*"] then {
 528     if ![runto_main] then { fail "break tests suppressed" }
 529
 530     gdb_test_no_output "set stop-on-solib-events 1" \
 531         "set stop-on-solib-events"
 532
 533     gdb_test "run" \
 534         "Stopped due to shared library event.*" \
 535         "triggered stop-on-solib-events" \
 536         "Start it from the beginning.*y or n. $" \
 537         "y"
 538
 539     gdb_test_no_output "set stop-on-solib-events 0" \
 540         "reset stop-on-solib-events"
 541 }
 542
 543 # Hardware breakpoints are unsupported on HP-UX.  Verify that GDB
 544 # gracefully responds to requests to create them.
 545 #
 546 if [istarget "hppa*-*-hpux*"] then {
 547     if ![runto_main] then { fail "break tests suppressed" }
 548
 549     gdb_test "hbreak" \
 550         "No hardware breakpoint support in the target.*" \
 551         "hw breaks disallowed"
 552
 553     gdb_test "thbreak" \
 554         "No hardware breakpoint support in the target.*" \
 555         "temporary hw breaks disallowed"
 556 }
 557
 558 #********
 559
 560
 561 #
 562 # Test "next" over recursive function call.
 563 #
 564
 565 proc test_next_with_recursion {} {
 566     global gdb_prompt
 567     global decimal
 568     global binfile
 569
 570     gdb_test "kill" "" "kill program" "Kill the program being debugged.*y or n. $" "y"
 571     delete_breakpoints
 572
 573     gdb_test "break factorial" "Breakpoint $decimal at .*" "break at factorial"
 574
 575     # Run until we call factorial with 6
 576
 577     gdb_run_cmd
 578     gdb_expect {
 579         -re "Break.* factorial .value=6. .*$gdb_prompt $" {}
 580         -re ".*$gdb_prompt $" {
 581             fail "run to factorial(6)";
 582             gdb_suppress_tests;
 583         }
 584         timeout { fail "run to factorial(6) (timeout)" ; gdb_suppress_tests }
 585     }
 586
 587     # Continue until we call factorial recursively with 5.
 588
 589     if [gdb_test "continue" \
 590         "Continuing.*Break.* factorial .value=5. .*" \
 591         "continue to factorial(5)"] then { gdb_suppress_tests }
 592
 593     # Do a backtrace just to confirm how many levels deep we are.
 594
 595     if [gdb_test "backtrace" \
 596         "#0\[ \t\]+ factorial .value=5..*" \
 597         "backtrace from factorial(5)"] then { gdb_suppress_tests }
 598
 599     # Now a "next" should position us at the recursive call, which
 600     # we will be performing with 4.
 601
 602     if [gdb_test "next" \
 603         ".* factorial .value - 1.;.*" \
 604         "next to recursive call"] then { gdb_suppress_tests }
 605
 606     # Disable the breakpoint at the entry to factorial by deleting them all.
 607     # The "next" should run until we return to the next line from this
 608     # recursive call to factorial with 4.
 609     # Buggy versions of gdb will stop instead at the innermost frame on
 610     # the line where we are trying to "next" to.
 611
 612     delete_breakpoints
 613
 614     if [istarget "mips*tx39-*"] {
 615         set timeout 60
 616     }
 617     # We used to set timeout here for all other targets as well.  This
 618     # is almost certainly wrong.  The proper timeout depends on the
 619     # target system in use, and how we communicate with it, so there
 620     # is no single value appropriate for all targets.  The timeout
 621     # should be established by the Dejagnu config file(s) for the
 622     # board, and respected by the test suite.
 623     #
 624     # For example, if I'm running GDB over an SSH tunnel talking to a
 625     # portmaster in California talking to an ancient 68k board running
 626     # a crummy ROM monitor (a situation I can only wish were
 627     # hypothetical), then I need a large timeout.  But that's not the
 628     # kind of knowledge that belongs in this file.
 629
 630     gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \
 631             "next over recursive call"
 632
 633     # OK, we should be back in the same stack frame we started from.
 634     # Do a backtrace just to confirm.
 635
 636     set result [gdb_test "backtrace" \
 637             "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \
 638             "backtrace from factorial(5.1)"]
 639     if { $result != 0 } { gdb_suppress_tests }
 640
 641     if [target_info exists gdb,noresults] { gdb_suppress_tests }
 642   gdb_continue_to_end "recursive next test"
 643    gdb_stop_suppressing_tests;
 644 }
 645
 646 test_next_with_recursion
 647
 648
 649 #********
 650
 651 # build a new file with optimization enabled so that we can try breakpoints
 652 # on targets with optimized prologues
 653
 654 if { [prepare_for_testing break.exp "breako2" {break.c break1.c} {debug nowarnings optimize=-O2}] } {
 655     return -1
 656 }
 657
 658 #
 659 # test break at function
 660 #
 661 gdb_test "break main" \
 662     "Breakpoint.*at.* file .*, line.*" \
 663     "breakpoint function, optimized file"
 664
 665 #
 666 # test break at function
 667 #
 668 gdb_test "break marker4" \
 669     "Breakpoint.*at.* file .*$srcfile1, line.*" \
 670     "breakpoint small function, optimized file"
 671
 672 #
 673 # run until the breakpoint at main is hit. For non-stubs-using targets.
 674 #
 675 gdb_run_cmd
 676 gdb_expect {
 677     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
 678         pass "run until function breakpoint, optimized file"
 679     }
 680     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $" {
 681         pass "run until function breakpoint, optimized file (code motion)"
 682     }
 683     -re "$gdb_prompt $" {
 684         fail "run until function breakpoint, optimized file"
 685     }
 686     timeout {
 687         fail "run until function breakpoint, optimized file (timeout)"
 688     }
 689 }
 690
 691 #
 692 # run until the breakpoint at a small function
 693 #
 694
 695 #
 696 # Add a second pass pattern.  The behavior differs here between stabs
 697 # and dwarf for one-line functions.  Stabs preserves two line symbols
 698 # (one before the prologue and one after) with the same line number,
 699 # but dwarf regards these as duplicates and discards one of them.
 700 # Therefore the address after the prologue (where the breakpoint is)
 701 # has no exactly matching line symbol, and GDB reports the breakpoint
 702 # as if it were in the middle of a line rather than at the beginning.
 703
 704 set bp_location13 [gdb_get_line_number "set breakpoint 13 here" $srcfile1]
 705 set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile1]
 706
 707 gdb_test_multiple "continue" \
 708     "run until breakpoint set at small function, optimized file" {
 709         -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
 710             pass "run until breakpoint set at small function, optimized file"
 711         }
 712         -re "Breakpoint $decimal, $hex in marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
 713             pass "run until breakpoint set at small function, optimized file"
 714         }
 715         -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
 716             # marker4() is defined at line 46 when compiled with -DPROTOTYPES
 717             pass "run until breakpoint set at small function, optimized file (line bp_location14)"
 718         }
 719         -re "Breakpoint $decimal, factorial \\(.*\\) .*\{\r\n$gdb_prompt" {
 720             # GCC 4.3 emits bad line number information - see gcc/36748.
 721             if { [test_compiler_info "gcc-4-3-*"] } {
 722                 setup_xfail *-*-*
 723             }
 724             fail "run until breakpoint set at small function, optimized file"
 725         }
 726     }
 727
 728 clean_restart breako2
 729
 730 #
 731 # test that 'rbreak' on a symbol that may be from a shared library doesn't
 732 # cause a "Junk at end of arguments." error.
 733 #
 734 # On x86 GNU/Linux, this test will choke on e.g. __libc_start_main@plt.
 735 #
 736 # Note that this test won't necessarily choke on all targets even if
 737 # all the rbreak issue is present.  rbreak needs to match and set a
 738 # breakpoint on a symbol causes 'break' to choke.
 739 #
 740
 741 gdb_test_no_output "set breakpoint pending on" "rbreak junk pending setup"
 742
 743 # We expect at least one breakpoint to be set when we "rbreak main".
 744 gdb_test "rbreak main" \
 745     ".*Breakpoint.*at.* file .*$srcfile, line.*" \
 746     "rbreak junk set breakpoint"
 747
 748 # Run to a breakpoint.  Fail if we see "Junk at end of arguments".
 749 gdb_run_cmd
 750 gdb_expect {
 751     -re "Junk at end of arguments" {
 752         fail "rbreak junk"
 753     }
 754     -re ".*Breakpoint \[0-9\]+,.*$gdb_prompt $" {
 755         pass "rbreak junk"
 756     }
 757     timeout {
 758         fail "rbreak junk (timeout)"
 759     }
 760 }
 761
 762
 763 # Reset the default arguments for VxWorks
 764 if [istarget "*-*-vxworks*"] {
 765     set timeout 10
 766     verbose "Timeout is now $timeout seconds" 2
 767     gdb_test_no_output "set args main"
 768 }