gdb/testsuite/gdb.base/ena-dis-br.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 1997-2021 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 #
  19 # test running programs
  20 #
  21
  22 standard_testfile break.c break1.c
  23
  24 if {[prepare_for_testing "failed to prepare" ${testfile} \
  25          [list $srcfile $srcfile2] {debug nowarnings}]} {
  26     return -1
  27 }
  28
  29 set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
  30 set bp_location7 [gdb_get_line_number "set breakpoint 7 here"]
  31 set bp_location8 [gdb_get_line_number "set breakpoint 8 here" $srcfile2]
  32 set bp_location11 [gdb_get_line_number "set breakpoint 11 here"]
  33 set bp_location14 [gdb_get_line_number "set breakpoint 14 here" $srcfile2]
  34 set bp_location15 [gdb_get_line_number "set breakpoint 15 here" $srcfile2]
  35 set bp_location17 [gdb_get_line_number "set breakpoint 17 here" $srcfile2]
  36
  37 if ![runto_main] then { fail "enable/disable break tests suppressed" }
  38
  39 # Verify that we can set a breakpoint (the location is irrelevant),
  40 # then enable it (yes, it's already enabled by default), then hit it.
  41
  42 proc break_at { breakpoint where } {
  43     global gdb_prompt
  44     global expect_out
  45
  46     set test "break $breakpoint"
  47     set bp 0
  48     gdb_test_multiple "$test" "$test" {
  49         -re "Breakpoint (\[0-9\]*) at .*$where.*$gdb_prompt $" {
  50             set bp $expect_out(1,string)
  51             pass $gdb_test_name
  52         }
  53     }
  54     return $bp
  55 }
  56
  57 set bp [break_at "marker1" " line $bp_location15"]
  58
  59 gdb_test_no_output "enable $bp" "enable break marker1"
  60
  61 gdb_test "info break $bp" \
  62     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+y.*" \
  63     "info break marker1 before hitting breakpoint"
  64
  65 # See the comments in condbreak.exp for "run until breakpoint at
  66 # marker1" for an explanation of the xfail below.
  67 set test "continue to break marker1"
  68 gdb_test_multiple "continue" "$test" {
  69     -re "Breakpoint \[0-9\]*, marker1.*$gdb_prompt $" {
  70         pass "$test"
  71     }
  72     -re "Breakpoint \[0-9\]*, $hex in marker1.*$gdb_prompt $" {
  73         xfail "$test"
  74     }
  75 }
  76
  77 gdb_test_no_output "delete $bp" "delete break marker1"
  78
  79 # Verify that we can set a breakpoint to be self-disabling after the
  80 # first time it triggers.
  81 set bp [break_at "marker2" " line $bp_location8"]
  82
  83 gdb_test_no_output "enable once $bp" "enable once break marker2"
  84
  85 gdb_test "info break $bp" \
  86     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+dis\[ \t\]+y.*" \
  87     "info auto-disabled break marker2 before hitting breakpoint"
  88
  89 # See the comments in condbreak.exp for "run until breakpoint at
  90 # marker1" for an explanation of the xfail below.
  91 set test "continue to auto-disabled break marker2"
  92 gdb_test_multiple "continue" "$test" {
  93     -re "Breakpoint \[0-9\]*, marker2.*$gdb_prompt $" {
  94         pass "$test"
  95     }
  96     -re "Breakpoint \[0-9\]*, $hex in marker2.*$gdb_prompt $" {
  97         xfail "$test"
  98     }
  99 }
 100
 101 gdb_test "info break $bp" \
 102     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+dis\[ \t\]+n.*" \
 103     "info auto-disabled break marker2 after hitting breakpoint"
 104
 105 # Verify that we don't stop at a disabled breakpoint.
 106 gdb_continue_to_end "no stop"
 107
 108 set count 1
 109 with_test_prefix "run $count" {
 110     rerun_to_main
 111     incr count
 112 }
 113 gdb_continue_to_end "no stop at auto-disabled break marker2"
 114
 115 # Verify that we can set a breakpoint to be self-deleting after the
 116 # first time it triggers.
 117 if ![runto_main] then {
 118     fail "enable/disable break tests suppressed"
 119 }
 120
 121 set bp [break_at "marker3" " line $bp_location17"]
 122
 123 gdb_test_no_output "enable del $bp" "enable del break marker3"
 124
 125 gdb_test "info break $bp" \
 126     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+del\[ \t\]+y.*" \
 127     "info auto-deleted break marker2"
 128
 129 gdb_test "continue" \
 130     ".*marker3 .*:$bp_location17.*" \
 131     "continue to auto-deleted break marker3"
 132
 133 gdb_test "info break $bp" \
 134     ".*No breakpoint or watchpoint matching.*" \
 135     "info auto-deleted break marker3"
 136
 137 # Verify that we can set a breakpoint and manually disable it (we've
 138 # already proven that disabled bp's don't trigger).
 139
 140 set bp [break_at "marker4" " line $bp_location14.*"]
 141
 142 gdb_test_no_output "disable $bp" "disable break marker4"
 143
 144 gdb_test "info break $bp" \
 145     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+n.*" \
 146     "info break marker4"
 147
 148 if ![runto_main] then {
 149     fail "enable/disable break tests suppressed"
 150 }
 151
 152 # Test enable count by stopping at a location until it is disabled
 153 # and passes through.
 154
 155 set bp [break_at $bp_location7 "line $bp_location7"]
 156
 157 with_test_prefix "enable count" {
 158   set bp2 [break_at marker1 " line $bp_location15"]
 159 }
 160
 161 gdb_test "enable count" \
 162     "Argument required \\(hit count\\)\\." \
 163     "enable count missing arguments"
 164
 165 gdb_test "enable count 2" \
 166     "Argument required \\(one or more breakpoint numbers\\)\\." \
 167     "enable count missing breakpoint number"
 168
 169 gdb_test_no_output "enable count 2 $bp" "disable break with count"
 170
 171 gdb_test "continue" \
 172     ".*factorial .*:$bp_location7.*" \
 173     "continue from enable count, first time"
 174
 175 gdb_test "continue" \
 176     ".*factorial .*:$bp_location7.*" \
 177     "continue from enable count, second time"
 178
 179 gdb_test "continue" \
 180     ".*marker1 .*:$bp_location15.*" \
 181     "continue through enable count, now disabled"
 182
 183 # Verify that we can set a breakpoint with an ignore count N, which
 184 # should cause the next N triggers of the bp to be ignored.  (This is
 185 # a flavor of enablement/disablement, after all.)
 186
 187 if ![runto_main] then {
 188     fail "enable/disable break tests suppressed"
 189 }
 190
 191 with_test_prefix "ignore count" {
 192     set bp [break_at "marker1" " line $bp_location15.*"]
 193 }
 194
 195 # Verify that an ignore of a non-existent breakpoint is gracefully
 196 # handled.
 197
 198 gdb_test "ignore 999 2" \
 199     "No breakpoint number 999..*" \
 200     "ignore non-existent break"
 201
 202 # Verify that a missing ignore count is gracefully handled.
 203
 204 gdb_test "ignore $bp" \
 205     "Second argument .specified ignore-count. is missing..*" \
 206     "ignore break with missing ignore count"
 207
 208 # Verify that a negative or zero ignore count is handled gracefully
 209 # (they both are treated the same).
 210
 211 gdb_test "ignore $bp -1" \
 212     "Will stop next time breakpoint \[0-9\]* is reached..*" \
 213     "ignore break marker1 -1"
 214
 215 gdb_test "ignore $bp 0" \
 216     "Will stop next time breakpoint \[0-9\]* is reached..*" \
 217     "ignore break marker1 0"
 218
 219 gdb_test "ignore $bp 1" \
 220     "Will ignore next crossing of breakpoint \[0-9\]*.*" \
 221     "ignore break marker1 1"
 222
 223 gdb_test "info break $bp" \
 224     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+y.*ignore next 1 hits.*" \
 225     "info ignored break marker1"
 226
 227 gdb_continue_to_end "no stop at ignored break marker1"
 228
 229 with_test_prefix "run $count" {
 230     rerun_to_main
 231     incr count
 232 }
 233
 234 # See the comments in condbreak.exp for "run until breakpoint at marker1"
 235 # for an explanation of the xfail below.
 236 set test "continue to break marker1, 2nd time"
 237 gdb_test_multiple "continue" "$test" {
 238     -re "Breakpoint \[0-9\]*, marker1.*$gdb_prompt $" {
 239         pass "continue to break marker1, 2nd time"
 240     }
 241     -re "Breakpoint \[0-9\]*, $hex in marker1.*$gdb_prompt $" {
 242         xfail "continue to break marker1, 2nd time"
 243     }
 244 }
 245
 246 # Verify that we can specify both an ignore count and an auto-delete.
 247
 248 if ![runto_main] then {
 249     fail "enable/disable break tests suppressed"
 250 }
 251
 252 with_test_prefix "ignore count and auto-delete" {
 253     set bp [break_at marker1 " line $bp_location15.*"]
 254 }
 255
 256 gdb_test "ignore $bp 1" \
 257     "Will ignore next crossing of breakpoint \[0-9\]*.*" \
 258     "ignore break marker1"
 259
 260 gdb_test_no_output "enable del $bp" "enable del break marker1"
 261
 262 gdb_test "info break $bp" \
 263     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+del\[ \t\]+y.*ignore next 1 hits.*" \
 264     "info break marker1 after hitting breakpoint"
 265
 266 gdb_continue_to_end "no stop at ignored & auto-deleted break marker1"
 267
 268 with_test_prefix "run $count" {
 269     rerun_to_main
 270     incr count
 271 }
 272
 273 gdb_test "continue" \
 274     ".*marker1 .*:$bp_location15.*" \
 275     "continue to ignored & auto-deleted break marker1"
 276
 277 # Verify that a disabled breakpoint's ignore count isn't updated when
 278 # the bp is encountered.
 279
 280 if ![runto_main] then {
 281     fail "enable/disable break tests suppressed"
 282 }
 283
 284 with_test_prefix "disabled breakpoint ignore count" {
 285     set bp [break_at marker1 " line $bp_location15"]
 286 }
 287
 288 gdb_test "ignore $bp 10" \
 289     "Will ignore next 10 crossings of breakpoint \[0-9\]*.*" \
 290     "ignore break marker1 10"
 291
 292 gdb_test_no_output "disable $bp" "disable break marker1"
 293
 294 gdb_continue_to_end "no stop at ignored & disabled break marker1"
 295
 296 with_test_prefix "run $count" {
 297     rerun_to_main
 298 }
 299
 300 gdb_test "info break $bp" \
 301     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+n.*ignore next 10 hits.*" \
 302     "info ignored & disabled break marker1"
 303
 304 # Verify that GDB correctly handles the "continue" command with an argument,
 305 # which is an ignore count to set on the currently stopped-at breakpoint.
 306 # (Also verify that GDB gracefully handles the case where the inferior
 307 # isn't stopped at a breakpoint.)
 308 #
 309 if ![runto_main] then { fail "enable/disable break tests suppressed" }
 310
 311 gdb_test "break $bp_location1" \
 312     "Breakpoint \[0-9\]*.*, line $bp_location1.*" \
 313     "prepare to continue with ignore count"
 314
 315 gdb_test "continue 2" \
 316     "Will ignore next crossing of breakpoint \[0-9\]*.  Continuing..*" \
 317     "continue with ignore count"
 318
 319 gdb_test "next" ".*$bp_location11\[ \t\]*marker1.*" \
 320     "step after continue with ignore count"
 321
 322 set test "continue with ignore count, not stopped at bpt"
 323 gdb_test_multiple "continue 2" "$test" {
 324     -re "Not stopped at any breakpoint; argument ignored.*$gdb_prompt $" {
 325         pass "$test"
 326     }
 327     -re "No breakpoint number -1.*$gdb_prompt $" {
 328         kfail gdb/1689 "$test"
 329     }
 330 }
 331
 332 # Verify that GDB correctly handles the "enable/disable" command
 333 # with arguments, that include multiple locations.
 334 #
 335 if ![runto_main] then { fail "enable/disable break tests suppressed" }
 336
 337 set b1 0
 338 set b2 0
 339 set b3 0
 340 set b4 0
 341 set b1 [break_at main ""]
 342
 343 with_test_prefix "2nd breakpoint" {
 344     set b2 [break_at main ""]
 345 }
 346
 347 with_test_prefix "3rd breakpoint" {
 348     set b3 [break_at main ""]
 349 }
 350
 351 with_test_prefix "4th breakpoint" {
 352     set b4 [break_at main ""]
 353 }
 354
 355 # Perform tests for disable/enable commands on multiple
 356 # locations and breakpoints.
 357 #
 358 # WHAT - the command to test (disable/enable).
 359 #
 360 # Note: tests involving location ranges (and more) are found in
 361 # gdb.cp/ena-dis-br-range.exp.
 362 #
 363 proc test_ena_dis_br { what } {
 364     global b1
 365     global b2
 366     global b3
 367     global b4
 368     global gdb_prompt
 369
 370     # OPPOS    - the command opposite to WHAT.
 371     # WHAT_RES - whether breakpoints are expected to end
 372     #            up enabled or disabled.
 373     # OPPOS_RES- same as WHAT_RES but opposite.
 374     # P1/P2    - proc to call (pass/fail).  Must be
 375     #            opposites.
 376     # Set variable values for disable command.
 377     set oppos "enable"
 378     set oppos_res "y"
 379     set what_res "n"
 380     set p1 "pass"
 381     set p2 "fail"
 382
 383     if { "$what" == "enable" } {
 384         # Set varibale values for enable command.
 385         set oppos "disable"
 386         set oppos_res "n"
 387         set what_res "y"
 388         set p1 "fail"
 389         set p2 "pass"
 390     }
 391
 392     # Now enable(disable) $b.1 $b2.1.
 393     gdb_test_no_output "$what $b1.1 $b2.1" "$what \$b1.1 \$b2.1"
 394     set test1 "${what}d \$b1.1 and \$b2.1"
 395
 396     # Now $b1.1 and $b2.1 should be enabled(disabled).
 397     gdb_test_multiple "info break" "$test1" {
 398        -re "(${b1}.1)(\[^\n\r\]*)( n.*)(${b2}.1)(\[^\n\r\]*)( n.*)$gdb_prompt $" {
 399            $p1 "$test1"
 400        }
 401        -re ".*$gdb_prompt $" {
 402            $p2 "$test1"
 403        }
 404     }
 405
 406     # Now enable(disable) $b1 fooo.1, it should give error on fooo.
 407     gdb_test "$what $b1 fooo.1" \
 408        "Bad breakpoint number 'fooo\\.1'" \
 409        "$what \$b1 fooo.1"
 410
 411     # $b1 should be enabled(disabled).
 412     gdb_test "info break" \
 413        "(${b1})(\[^\n\r]*)( $what_res.*)" \
 414        "${what}d \$b1"
 415
 416     gdb_test_no_output "$oppos $b3" "$oppos \$b3"
 417     gdb_test_no_output "$what $b4 $b3.1" "$what \$b4 \$b3.1"
 418     set test1 "${what}d \$b4 and \$b3.1,remain ${oppos}d \$b3"
 419
 420     # Now $b4 $b3.1 should be enabled(disabled) and
 421     # $b3 should remain disabled(enabled).
 422     gdb_test_multiple "info break" "$test1" {
 423        -re "(${b3})(\[^\n\r]*)( $oppos_res.*)(${b3}.1)(\[^\n\r\]*)( n.*)(${b4})(\[^\n\r\]*)( $what_res.*)$gdb_prompt $" {
 424            $p1 "$test1"
 425        }
 426        -re "(${b3})(\[^\n\r]*)( $oppos_res.*)(${b4})(\[^\n\r\]*)( $what_res.*)$gdb_prompt $" {
 427            $p2 "$test1"
 428        }
 429     }
 430
 431     # Now enable(disable) '$b4.1 fooobaar'.  This should error on
 432     # fooobaar.
 433     gdb_test "$what $b4.1 fooobaar" \
 434        "Bad breakpoint number 'fooobaar'" \
 435        "$what \$b4.1 fooobar"
 436     set test1 "${what}d \$b4.1"
 437
 438     # $b4.1 should be enabled(disabled).
 439     gdb_test_multiple "info break" "$test1" {
 440         -re "(${b4}.1)(\[^\n\r\]*)( n.*)$gdb_prompt $" {
 441            $p1 "$test1"
 442        }
 443        -re ".*$gdb_prompt $" {
 444            $p2 "$test1"
 445        }
 446     }
 447 }
 448
 449 test_ena_dis_br "disable"
 450 test_ena_dis_br "enable"
 451
 452 gdb_exit
 453 return 0