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, 2011
   3 #   Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 # This file was written by Rob Savoye. (rob@cygnus.com)
  19
  20 if { [prepare_for_testing break.exp "break" {break.c break1.c} {debug nowarnings}] } {
  21     return -1
  22 }
  23 set srcfile break.c
  24 set srcfile1 break1.c
  25 #
  26 # test simple breakpoint setting commands
  27 #
  28
  29 # Test deleting all breakpoints when there are none installed,
  30 # GDB should not prompt for confirmation.
  31 # Note that lib/gdb.exp provides a "delete_breakpoints" proc
  32 # for general use elsewhere.
  33
  34 send_gdb "delete breakpoints\n"
  35 gdb_expect {
  36      -re "Delete all breakpoints.*$" {
  37             send_gdb "y\n"
  38             gdb_expect {
  39                 -re "$gdb_prompt $" {
  40                     fail "Delete all breakpoints when none (unexpected prompt)"
  41                 }
  42                 timeout { fail "Delete all breakpoints when none (timeout after unexpected prompt)" }
  43             }
  44         }
  45      -re ".*$gdb_prompt $"       { pass "Delete all breakpoints when none" }
  46     timeout                 { fail "Delete all breakpoints when none (timeout)" }
  47 }
  48
  49 #
  50 # test break at function
  51 #
  52 gdb_test "break main" \
  53     "Breakpoint.*at.* file .*$srcfile, line.*" \
  54     "breakpoint function"
  55
  56 #
  57 # test break at quoted function
  58 #
  59 gdb_test "break \"marker2\"" \
  60     "Breakpoint.*at.* file .*$srcfile1, line.*" \
  61     "breakpoint quoted function"
  62
  63 #
  64 # test break at function in file
  65 #
  66 gdb_test "break $srcfile:factorial" \
  67     "Breakpoint.*at.* file .*$srcfile, line.*" \
  68     "breakpoint function in file"
  69
  70 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
  71
  72 #
  73 # test break at line number
  74 #
  75 # Note that the default source file is the last one whose source text
  76 # was printed.  For native debugging, before we've executed the
  77 # program, this is the file containing main, but for remote debugging,
  78 # it's wherever the processor was stopped when we connected to the
  79 # board.  So, to be sure, we do a list command.
  80 #
  81 gdb_test "list main" \
  82     ".*main \\(argc, argv, envp\\).*" \
  83     "use `list' to establish default source file"
  84 gdb_test "break $bp_location1" \
  85     "Breakpoint.*at.* file .*$srcfile, line $bp_location1\\." \
  86     "breakpoint line number"
  87
  88 #
  89 # test duplicate breakpoint
  90 #
  91 gdb_test "break $bp_location1" \
  92     "Note: breakpoint \[0-9\]+ also set at pc.*Breakpoint \[0-9\]+ at.* file .*$srcfile, line $bp_location1\\." \
  93     "breakpoint duplicate"
  94
  95 set bp_location2 [gdb_get_line_number "set breakpoint 2 here"]
  96
  97 #
  98 # test break at line number in file
  99 #
 100 gdb_test "break $srcfile:$bp_location2" \
 101     "Breakpoint.*at.* file .*$srcfile, line $bp_location2\\." \
 102     "breakpoint line number in file"
 103
 104 set bp_location3 [gdb_get_line_number "set breakpoint 3 here"]
 105 set bp_location4 [gdb_get_line_number "set breakpoint 4 here"]
 106
 107 #
 108 # Test putting a break at the start of a multi-line if conditional.
 109 # Verify the breakpoint was put at the start of the conditional.
 110 #
 111 gdb_test "break multi_line_if_conditional" \
 112     "Breakpoint.*at.* file .*$srcfile, line $bp_location3\\." \
 113     "breakpoint at start of multi line if conditional"
 114
 115 gdb_test "break multi_line_while_conditional" \
 116     "Breakpoint.*at.* file .*$srcfile, line $bp_location4\\." \
 117     "breakpoint at start of multi line while conditional"
 118
 119 set bp_location5 [gdb_get_line_number "set breakpoint 5 here"]
 120 set bp_location6 [gdb_get_line_number "set breakpoint 6 here"]
 121
 122 #
 123 # check to see what breakpoints are set
 124 #
 125 if [target_info exists gdb_stub] {
 126     set main_line $bp_location5
 127 } else {
 128     set main_line $bp_location6
 129 }
 130
 131 if {$hp_aCC_compiler} {
 132     set proto "\\(int\\)"
 133 } else {
 134     set proto ""
 135 }
 136
 137 set bp_location7 [gdb_get_line_number "set breakpoint 7 here"]
 138 set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile1]
 139 set bp_location9 [gdb_get_line_number "set breakpoint 9 here" $srcfile1]
 140
 141 gdb_test "info break" \
 142     "Num     Type\[ \]+Disp Enb Address\[ \]+What.*
 143 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$main_line.*
 144 \[0-9\]+\[\t \]+breakpoint     keep y.* in marker2 at .*$srcfile1:($bp_location8|$bp_location9).*
 145 \[0-9\]+\[\t \]+breakpoint     keep y.* in factorial$proto at .*$srcfile:$bp_location7.*
 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_location1.*
 148 \[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$bp_location2.*
 149 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_if_conditional at .*$srcfile:$bp_location3.*
 150 \[0-9\]+\[\t \]+breakpoint     keep y.* in multi_line_while_conditional at .*$srcfile:$bp_location4" \
 151     "breakpoint info"
 152
 153 # FIXME: The rest of this test doesn't work with anything that can't
 154 # handle arguments.
 155 # Huh? There doesn't *appear* to be anything that passes arguments
 156 # below.
 157 if [istarget "mips-idt-*"] then {
 158     return
 159 }
 160
 161 #
 162 # run until the breakpoint at main is hit. For non-stubs-using targets.
 163 #
 164 gdb_run_cmd
 165 gdb_expect {
 166     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
 167         pass "run until function breakpoint"
 168     }
 169     -re "$gdb_prompt $" {
 170         fail "run until function breakpoint"
 171     }
 172     timeout {
 173         fail "run until function breakpoint (timeout)"
 174     }
 175 }
 176
 177 #
 178 # run until the breakpoint at a line number
 179 #
 180 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location1.*$bp_location1\[\t \]+printf.*factorial.*" \
 181                         "run until breakpoint set at a line number"
 182
 183 #
 184 # Run until the breakpoint set in a function in a file
 185 #
 186 for {set i 6} {$i >= 1} {incr i -1} {
 187         gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:$bp_location7.*$bp_location7\[\t \]+.*if .value > 1. \{.*" \
 188                         "run until file:function($i) breakpoint"
 189 }
 190
 191 #
 192 # Run until the breakpoint set at a quoted function
 193 #
 194 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, (0x\[0-9a-f\]+ in )?marker2 \\(a=43\\) at .*$srcfile1:($bp_location8|$bp_location9).*" \
 195                 "run until quoted breakpoint"
 196 #
 197 # run until the file:function breakpoint at a line number in a file
 198 #
 199 gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location2.*$bp_location2\[\t \]+argc = \\(argc == 12345\\);.*" \
 200                 "run until file:linenum breakpoint"
 201
 202 # Test break at offset +1
 203 set bp_location10 [gdb_get_line_number "set breakpoint 10 here"]
 204
 205 gdb_test "break +1" \
 206     "Breakpoint.*at.* file .*$srcfile, line $bp_location10\\." \
 207     "breakpoint offset +1"
 208
 209 # Check to see if breakpoint is hit when stepped onto
 210
 211 gdb_test "step" \
 212     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10.*$bp_location10\[\t \]+return argc;.*breakpoint 10 here.*" \
 213     "step onto breakpoint"
 214
 215 # Check to see if breakpoint can be set on ending brace of function
 216 set bp_location10a [gdb_get_line_number "set breakpoint 10a here"]
 217
 218 gdb_test "break $bp_location10a" \
 219     "Breakpoint.*at.* file .*$srcfile, line $bp_location10a\\." \
 220     "setting breakpoint at }"
 221
 222 gdb_test "continue" \
 223     ".*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:$bp_location10a.*$bp_location10a\[\t \]+}.*breakpoint 10a here.*" \
 224     "continue to breakpoint at }"
 225
 226 #
 227 # delete all breakpoints so we can start over, course this can be a test too
 228 #
 229 delete_breakpoints
 230
 231 #
 232 # test temporary breakpoint at function
 233 #
 234
 235 gdb_test "tbreak main" "Temporary breakpoint.*at.* file .*$srcfile, line.*" "Temporary breakpoint function"
 236
 237 #
 238 # test break at function in file
 239 #
 240
 241 gdb_test "tbreak $srcfile:factorial" "Temporary breakpoint.*at.* file .*$srcfile, line.*" \
 242         "Temporary breakpoint function in file"
 243
 244 #
 245 # test break at line number
 246 #
 247 gdb_test "tbreak $bp_location1" \
 248     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location1.*" \
 249     "Temporary breakpoint line number #1"
 250
 251 gdb_test "tbreak $bp_location6" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location6.*" "Temporary breakpoint line number #2"
 252
 253 #
 254 # test break at line number in file
 255 #
 256 gdb_test "tbreak $srcfile:$bp_location2" \
 257     "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location2.*" \
 258     "Temporary breakpoint line number in file #1"
 259
 260 set bp_location11 [gdb_get_line_number "set breakpoint 11 here"]
 261 gdb_test  "tbreak $srcfile:$bp_location11" "Temporary breakpoint.*at.* file .*$srcfile, line $bp_location11.*" "Temporary breakpoint line number in file #2"
 262
 263 #
 264 # check to see what breakpoints are set (temporary this time)
 265 #
 266 gdb_test "info break" "Num     Type.*Disp Enb Address.*What.*\[\r\n\]
 267 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$main_line.*\[\r\n\]
 268 \[0-9\]+\[\t \]+breakpoint     del.*y.*in factorial$proto at .*$srcfile:$bp_location7.*\[\r\n\]
 269 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location1.*\[\r\n\]
 270 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location6.*\[\r\n\]
 271 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location2.*\[\r\n\]
 272 \[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$bp_location11.*" \
 273     "Temporary breakpoint info"
 274
 275
 276 #***********
 277
 278 # Verify that catchpoints for fork, vfork and exec don't trigger
 279 # inappropriately.  (There are no calls to those system functions
 280 # in this test program.)
 281 #
 282 if ![runto_main] then { fail "break tests suppressed" }
 283
 284 gdb_test "catch" \
 285     "Catch requires an event name." \
 286     "catch requires an event name"
 287
 288
 289 set name "set catch fork, never expected to trigger"
 290 gdb_test_multiple "catch fork" "$name" {
 291     -re "Catchpoint \[0-9\]* .fork..*$gdb_prompt $" {
 292         pass $name
 293     }
 294     -re "Catch of fork not yet implemented.*$gdb_prompt $" {
 295         pass $name
 296     }
 297 }
 298
 299
 300 # If we are on HP-UX 10.20, we expect an error message to be
 301 # printed if we type "catch vfork" at the gdb gdb_prompt.  This is
 302 # because on HP-UX 10.20, we cannot catch vfork events.
 303
 304 set name "set catch vfork, never expected to trigger"
 305
 306 if [istarget "hppa*-hp-hpux10.20"] then {
 307     gdb_test "catch vfork" \
 308         "Catch of vfork events not supported on HP-UX 10.20..*" \
 309         "$name"
 310 } else {
 311     gdb_test_multiple "catch vfork" "$name" {
 312         -re "Catchpoint \[0-9\]* .vfork..*$gdb_prompt $" {
 313             pass $name
 314         }
 315         -re "Catch of vfork not yet implemented.*$gdb_prompt $" {
 316             pass $name
 317         }
 318     }
 319 }
 320
 321 set name "set catch exec, never expected to trigger"
 322 gdb_test_multiple "catch exec" "$name" {
 323     -re "Catchpoint \[0-9\]* .exec..*$gdb_prompt $" {
 324         pass $name
 325     }
 326     -re "Catch of exec not yet implemented.*$gdb_prompt $" {
 327         pass $name
 328     }
 329 }
 330
 331 # Verify that GDB responds gracefully when asked to set a breakpoint
 332 # on a nonexistent source line.
 333 #
 334 gdb_test "break 999" \
 335     "No line 999 in file .*" \
 336     "break on non-existent source line"
 337
 338 # Run to the desired default location. If not positioned here, the
 339 # tests below don't work.
 340 #
 341 gdb_test "until $bp_location1" "main .* at .*:$bp_location1.*" \
 342     "until bp_location1"
 343
 344 # Verify that GDB allows one to just say "break", which is treated
 345 # as the "default" breakpoint.  Note that GDB gets cute when printing
 346 # the informational message about other breakpoints at the same
 347 # location.  We'll hit that bird with this stone too.
 348 #
 349 gdb_test "break" "Breakpoint \[0-9\]*.*" \
 350     "break on default location, 1st time"
 351
 352 gdb_test "break" \
 353     "Note: breakpoint \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 354     "break on default location, 2nd time"
 355
 356 gdb_test "break" \
 357     "Note: breakpoints \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 358     "break on default location, 3rd time"
 359
 360 gdb_test "break" \
 361     "Note: breakpoints \[0-9\]*, \[0-9\]* and \[0-9\]* also set at .*Breakpoint \[0-9\]*.*" \
 362     "break on default location, 4th time"
 363
 364 # Verify that a "silent" breakpoint can be set, and that GDB is indeed
 365 # "silent" about its triggering.
 366 #
 367 if ![runto_main] then { fail "break tests suppressed" }
 368
 369 gdb_test_multiple "break $bp_location1" \
 370     "set to-be-silent break bp_location1" {
 371         -re "Breakpoint (\[0-9\]*) at .*, line $bp_location1.*$gdb_prompt $" {
 372             pass "set to-be-silent break bp_location1"
 373         }
 374     }
 375
 376 send_gdb "commands $expect_out(1,string)\n"
 377 send_gdb "silent\n"
 378 send_gdb "end\n"
 379 gdb_expect {
 380   -re ".*$gdb_prompt $"\
 381           {pass "set silent break bp_location1"}
 382   timeout {fail "(timeout) set silent break bp_location1"}
 383 }
 384
 385 gdb_test "info break $expect_out(1,string)" \
 386     "\[0-9\]*\[ \t\]*breakpoint.*:$bp_location1\r\n\[ \t\]*silent.*" \
 387     "info silent break bp_location1"
 388
 389 gdb_test "continue" "Continuing." \
 390     "hit silent break bp_location1"
 391
 392 gdb_test "bt" "#0  main .* at .*:$bp_location1.*" \
 393     "stopped for silent break bp_location1"
 394
 395 # Verify that GDB can at least parse a breakpoint with the
 396 # "thread" keyword.  (We won't attempt to test here that a
 397 # thread-specific breakpoint really triggers appropriately.
 398 # The gdb.threads subdirectory contains tests for that.)
 399 #
 400 set bp_location12 [gdb_get_line_number "set breakpoint 12 here"]
 401 gdb_test "break $bp_location12 thread 999" "Unknown thread 999.*" \
 402     "thread-specific breakpoint on non-existent thread disallowed"
 403
 404 gdb_test "break $bp_location12 thread foo" \
 405     "Junk after thread keyword.*" \
 406     "thread-specific breakpoint on bogus thread ID disallowed"
 407
 408 # Verify that GDB responds gracefully to a breakpoint command with
 409 # trailing garbage.
 410 #
 411 gdb_test "break $bp_location12 foo" \
 412     "Junk at end of arguments.*" \
 413     "breakpoint with trailing garbage disallowed"
 414
 415 # Verify that GDB responds gracefully to a "clear" command that has
 416 # no matching breakpoint.  (First, get us off the current source line,
 417 # which we know has a breakpoint.)
 418 #
 419 gdb_test "next" "marker1.*" "step over breakpoint"
 420
 421 gdb_test "clear 81" "No breakpoint at 81.*" \
 422     "clear line has no breakpoint disallowed"
 423
 424 gdb_test "clear" "No breakpoint at this line.*" \
 425     "clear current line has no breakpoint disallowed"
 426
 427 # Verify that we can set and clear multiple breakpoints.
 428 #
 429 # We don't test that it deletes the correct breakpoints.  We do at
 430 # least test that it deletes more than one breakpoint.
 431 #
 432 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #1"
 433 gdb_test "break marker3" "Breakpoint.*at.*" "break marker3 #2"
 434 gdb_test "clear marker3" {Deleted breakpoints [0-9]+ [0-9]+.*}
 435
 436 # Verify that a breakpoint can be set via a convenience variable.
 437 #
 438 gdb_test_no_output "set \$foo=$bp_location11" \
 439     "set convenience variable \$foo to bp_location11"
 440
 441 gdb_test "break \$foo" \
 442     "Breakpoint (\[0-9\]*) at .*, line $bp_location11.*" \
 443     "set breakpoint via convenience variable"
 444
 445 # Verify that GDB responds gracefully to an attempt to set a
 446 # breakpoint via a convenience variable whose type is not integer.
 447 #
 448 gdb_test_no_output "set \$foo=81.5" \
 449     "set convenience variable \$foo to 81.5"
 450
 451 gdb_test "break \$foo" \
 452     "Convenience variables used in line specs must have integer values.*" \
 453     "set breakpoint via non-integer convenience variable disallowed"
 454
 455 # Verify that we can set and trigger a breakpoint in a user-called function.
 456 #
 457 gdb_test "break marker2" \
 458     "Breakpoint (\[0-9\]*) at .*, line ($bp_location8|$bp_location9).*" \
 459     "set breakpoint on to-be-called function"
 460
 461 gdb_test "print marker2(99)" \
 462     "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.*" \
 463     "hit breakpoint on called function"
 464
 465 # As long as we're stopped (breakpointed) in a called function,
 466 # verify that we can successfully backtrace & such from here.
 467 #
 468 # In this and the following test, the _sr4export check apparently is needed
 469 # for hppa*-*-hpux.
 470 #
 471 gdb_test_multiple "bt" "backtrace while in called function" {
 472     -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*_sr4export.*$gdb_prompt $" {
 473         pass "backtrace while in called function"
 474     }
 475     -re "#0\[ \t\]*($hex in )?marker2.*:($bp_location8|$bp_location9)\r\n#1.*function called from gdb.*$gdb_prompt $" {
 476         pass "backtrace while in called function"
 477     }
 478 }
 479
 480 # Return from the called function.  For remote targets, it's important to do
 481 # this before runto_main, which otherwise may silently stop on the dummy
 482 # breakpoint inserted by GDB at the program's entry point.
 483 #
 484 gdb_test_multiple "finish" "finish from called function" {
 485     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.* in _sr4export.*$gdb_prompt $" {
 486         pass "finish from called function"
 487     }
 488     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*function called from gdb.*$gdb_prompt $" {
 489         pass "finish from called function"
 490     }
 491     -re "Run till exit from .*marker2.* at .*($bp_location8|$bp_location9)\r\n.*Value returned.*$gdb_prompt $" {
 492         pass "finish from called function"
 493     }
 494 }
 495
 496 # Verify that GDB responds gracefully to a "finish" command with
 497 # arguments.
 498 #
 499 if ![runto_main] then { fail "break tests suppressed" }
 500
 501 send_gdb "finish 123\n"
 502 gdb_expect {
 503   -re "The \"finish\" command does not take any arguments.\r\n$gdb_prompt $"\
 504           {pass "finish with arguments disallowed"}
 505   -re "$gdb_prompt $"\
 506           {fail "finish with arguments disallowed"}
 507   timeout {fail "(timeout) finish with arguments disallowed"}
 508 }
 509
 510 # Verify that GDB responds gracefully to a request to "finish" from
 511 # the outermost frame.  On a stub that never exits, this will just
 512 # run to the stubs routine, so we don't get this error...  Thus the
 513 # second condition.
 514 #
 515
 516 gdb_test_multiple "finish" "finish from outermost frame disallowed" {
 517     -re "\"finish\" not meaningful in the outermost frame.\r\n$gdb_prompt $" {
 518         pass "finish from outermost frame disallowed"
 519     }
 520     -re "Run till exit from.*\r\n$gdb_prompt $" {
 521         pass "finish from outermost frame disallowed"
 522     }
 523 }
 524
 525 # Verify that we can explicitly ask GDB to stop on all shared library
 526 # events, and that it does so.
 527 #
 528 if [istarget "hppa*-*-hpux*"] then {
 529     if ![runto_main] then { fail "break tests suppressed" }
 530
 531     gdb_test_no_output "set stop-on-solib-events 1" \
 532         "set stop-on-solib-events"
 533
 534     gdb_test "run" \
 535         "Stopped due to shared library event.*" \
 536         "triggered stop-on-solib-events" \
 537         "Start it from the beginning.*y or n. $" \
 538         "y"
 539
 540     gdb_test_no_output "set stop-on-solib-events 0" \
 541         "reset stop-on-solib-events"
 542 }
 543
 544 # Hardware breakpoints are unsupported on HP-UX.  Verify that GDB
 545 # gracefully responds to requests to create them.
 546 #
 547 if [istarget "hppa*-*-hpux*"] then {
 548     if ![runto_main] then { fail "break tests suppressed" }
 549
 550     gdb_test "hbreak" \
 551         "No hardware breakpoint support in the target.*" \
 552         "hw breaks disallowed"
 553
 554     gdb_test "thbreak" \
 555         "No hardware breakpoint support in the target.*" \
 556         "temporary hw breaks disallowed"
 557 }
 558
 559 #********
 560
 561
 562 #
 563 # Test "next" over recursive function call.
 564 #
 565
 566 proc test_next_with_recursion {} {
 567     global gdb_prompt
 568     global decimal
 569     global binfile
 570
 571     gdb_test "kill" "" "kill program" "Kill the program being debugged.*y or n. $" "y"
 572     delete_breakpoints
 573
 574     gdb_test "break factorial" "Breakpoint $decimal at .*" "break at factorial"
 575
 576     # Run until we call factorial with 6
 577
 578     gdb_run_cmd
 579     gdb_expect {
 580         -re "Break.* factorial .value=6. .*$gdb_prompt $" {}
 581         -re ".*$gdb_prompt $" {
 582             fail "run to factorial(6)";
 583             gdb_suppress_tests;
 584         }
 585         timeout { fail "run to factorial(6) (timeout)" ; gdb_suppress_tests }
 586     }
 587
 588     # Continue until we call factorial recursively with 5.
 589
 590     if [gdb_test "continue" \
 591         "Continuing.*Break.* factorial .value=5. .*" \
 592         "continue to factorial(5)"] then { gdb_suppress_tests }
 593
 594     # Do a backtrace just to confirm how many levels deep we are.
 595
 596     if [gdb_test "backtrace" \
 597         "#0\[ \t\]+ factorial .value=5..*" \
 598         "backtrace from factorial(5)"] then { gdb_suppress_tests }
 599
 600     # Now a "next" should position us at the recursive call, which
 601     # we will be performing with 4.
 602
 603     if [gdb_test "next" \
 604         ".* factorial .value - 1.;.*" \
 605         "next to recursive call"] then { gdb_suppress_tests }
 606
 607     # Disable the breakpoint at the entry to factorial by deleting them all.
 608     # The "next" should run until we return to the next line from this
 609     # recursive call to factorial with 4.
 610     # Buggy versions of gdb will stop instead at the innermost frame on
 611     # the line where we are trying to "next" to.
 612
 613     delete_breakpoints
 614
 615     if [istarget "mips*tx39-*"] {
 616         set timeout 60
 617     }
 618     # We used to set timeout here for all other targets as well.  This
 619     # is almost certainly wrong.  The proper timeout depends on the
 620     # target system in use, and how we communicate with it, so there
 621     # is no single value appropriate for all targets.  The timeout
 622     # should be established by the Dejagnu config file(s) for the
 623     # board, and respected by the test suite.
 624     #
 625     # For example, if I'm running GDB over an SSH tunnel talking to a
 626     # portmaster in California talking to an ancient 68k board running
 627     # a crummy ROM monitor (a situation I can only wish were
 628     # hypothetical), then I need a large timeout.  But that's not the
 629     # kind of knowledge that belongs in this file.
 630
 631     gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \
 632             "next over recursive call"
 633
 634     # OK, we should be back in the same stack frame we started from.
 635     # Do a backtrace just to confirm.
 636
 637     set result [gdb_test "backtrace" \
 638             "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \
 639             "backtrace from factorial(5.1)"]
 640     if { $result != 0 } { gdb_suppress_tests }
 641
 642     if [target_info exists gdb,noresults] { gdb_suppress_tests }
 643   gdb_continue_to_end "recursive next test"
 644    gdb_stop_suppressing_tests;
 645 }
 646
 647 test_next_with_recursion
 648
 649
 650 #********
 651
 652 # build a new file with optimization enabled so that we can try breakpoints
 653 # on targets with optimized prologues
 654
 655 if { [prepare_for_testing break.exp "breako2" {break.c break1.c} {debug nowarnings optimize=-O2}] } {
 656     return -1
 657 }
 658
 659 #
 660 # test break at function
 661 #
 662 gdb_test "break main" \
 663     "Breakpoint.*at.* file .*, line.*" \
 664     "breakpoint function, optimized file"
 665
 666 #
 667 # test break at function
 668 #
 669 gdb_test "break marker4" \
 670     "Breakpoint.*at.* file .*$srcfile1, line.*" \
 671     "breakpoint small function, optimized file"
 672
 673 #
 674 # run until the breakpoint at main is hit. For non-stubs-using targets.
 675 #
 676 gdb_run_cmd
 677 gdb_expect {
 678     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:$bp_location6.*$bp_location6\[\t \]+if .argc.* \{.*$gdb_prompt $" {
 679         pass "run until function breakpoint, optimized file"
 680     }
 681     -re "Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$gdb_prompt $" {
 682         pass "run until function breakpoint, optimized file (code motion)"
 683     }
 684     -re "$gdb_prompt $" {
 685         fail "run until function breakpoint, optimized file"
 686     }
 687     timeout {
 688         fail "run until function breakpoint, optimized file (timeout)"
 689     }
 690 }
 691
 692 #
 693 # run until the breakpoint at a small function
 694 #
 695
 696 #
 697 # Add a second pass pattern.  The behavior differs here between stabs
 698 # and dwarf for one-line functions.  Stabs preserves two line symbols
 699 # (one before the prologue and one after) with the same line number,
 700 # but dwarf regards these as duplicates and discards one of them.
 701 # Therefore the address after the prologue (where the breakpoint is)
 702 # has no exactly matching line symbol, and GDB reports the breakpoint
 703 # as if it were in the middle of a line rather than at the beginning.
 704
 705 set bp_location13 [gdb_get_line_number "set breakpoint 13 here" $srcfile1]
 706 set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile1]
 707
 708 gdb_test_multiple "continue" \
 709     "run until breakpoint set at small function, optimized file" {
 710         -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
 711             pass "run until breakpoint set at small function, optimized file"
 712         }
 713         -re "Breakpoint $decimal, $hex in marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location13\[\r\n\]+$bp_location13\[\t \]+void marker4.*" {
 714             pass "run until breakpoint set at small function, optimized file"
 715         }
 716         -re "Breakpoint $decimal, marker4 \\(d=177601976\\) at .*$srcfile1:$bp_location14\[\r\n\]+$bp_location14\[\t \]+void marker4.*" {
 717             # marker4() is defined at line 46 when compiled with -DPROTOTYPES
 718             pass "run until breakpoint set at small function, optimized file (line bp_location14)"
 719         }
 720         -re "Breakpoint $decimal, factorial \\(.*\\) .*\{\r\n$gdb_prompt" {
 721             # GCC 4.3 emits bad line number information - see gcc/36748.
 722             if { [test_compiler_info "gcc-4-3-*"] } {
 723                 setup_xfail *-*-*
 724             }
 725             fail "run until breakpoint set at small function, optimized file"
 726         }
 727     }
 728
 729 clean_restart breako2
 730
 731 #
 732 # test that 'rbreak' on a symbol that may be from a shared library doesn't
 733 # cause a "Junk at end of arguments." error.
 734 #
 735 # On x86 GNU/Linux, this test will choke on e.g. __libc_start_main@plt.
 736 #
 737 # Note that this test won't necessarily choke on all targets even if
 738 # all the rbreak issue is present.  rbreak needs to match and set a
 739 # breakpoint on a symbol causes 'break' to choke.
 740 #
 741
 742 gdb_test_no_output "set breakpoint pending on" "rbreak junk pending setup"
 743
 744 # We expect at least one breakpoint to be set when we "rbreak main".
 745 gdb_test "rbreak main" \
 746     ".*Breakpoint.*at.* file .*$srcfile, line.*" \
 747     "rbreak junk set breakpoint"
 748
 749 # Run to a breakpoint.  Fail if we see "Junk at end of arguments".
 750 gdb_run_cmd
 751 gdb_expect {
 752     -re "Junk at end of arguments" {
 753         fail "rbreak junk"
 754     }
 755     -re ".*Breakpoint \[0-9\]+,.*$gdb_prompt $" {
 756         pass "rbreak junk"
 757     }
 758     timeout {
 759         fail "rbreak junk (timeout)"
 760     }
 761 }
 762
 763
 764 # Reset the default arguments for VxWorks
 765 if [istarget "*-*-vxworks*"] {
 766     set timeout 10
 767     verbose "Timeout is now $timeout seconds" 2
 768     gdb_test_no_output "set args main"
 769 }