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

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 1997-2023 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]} {
  38     return
  39 }
  40
  41 # Verify that we can set a breakpoint (the location is irrelevant),
  42 # then enable it (yes, it's already enabled by default), then hit it.
  43
  44 proc break_at { breakpoint where } {
  45     global gdb_prompt
  46     global expect_out
  47
  48     set test "break $breakpoint"
  49     set bp 0
  50     gdb_test_multiple "$test" "$test" {
  51         -re "Breakpoint (\[0-9\]*) at .*$where.*$gdb_prompt $" {
  52             set bp $expect_out(1,string)
  53             pass $gdb_test_name
  54         }
  55     }
  56     return $bp
  57 }
  58
  59 set bp [break_at "marker1" " line $bp_location15"]
  60
  61 gdb_test_no_output "enable $bp" "enable break marker1"
  62
  63 gdb_test "info break $bp" \
  64     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+y.*" \
  65     "info break marker1 before hitting breakpoint"
  66
  67 # See the comments in condbreak.exp for "run until breakpoint at
  68 # marker1" for an explanation of the xfail below.
  69 set test "continue to break marker1"
  70 set bpno 0
  71 gdb_test_multiple "continue" "$test" {
  72     -re "Breakpoint (\[0-9\]*), marker1.*$gdb_prompt $" {
  73         set bpno $expect_out(1,string)
  74         pass "$test"
  75     }
  76     -re "Breakpoint (\[0-9\]*), $hex in marker1.*$gdb_prompt $" {
  77         set bpno $expect_out(1,string)
  78         xfail "$test"
  79     }
  80 }
  81 # Verify the $_hit_bbnum convenience variable is equal to the hit bpno.
  82 gdb_test "print \$_hit_bpnum" " = $bpno" "$test \$_hit_bpnum is $bpno"
  83 # Verify the $_hit_locno is 1, as there is only one code location.
  84 gdb_test "print \$_hit_locno" " = 1" "$test \$_hit_locno is 1"
  85
  86 gdb_test_no_output "delete $bp" "delete break marker1"
  87
  88 # Verify that we can set a breakpoint to be self-disabling after the
  89 # first time it triggers.
  90 set bp [break_at "marker2" " line $bp_location8"]
  91
  92 gdb_test_no_output "enable once $bp" "enable once break marker2"
  93
  94 gdb_test "info break $bp" \
  95     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+dis\[ \t\]+y.*" \
  96     "info auto-disabled break marker2 before hitting breakpoint"
  97
  98 # See the comments in condbreak.exp for "run until breakpoint at
  99 # marker1" for an explanation of the xfail below.
 100 set test "continue to auto-disabled break marker2"
 101 gdb_test_multiple "continue" "$test" {
 102     -re "Breakpoint \[0-9\]*, marker2.*$gdb_prompt $" {
 103         pass "$test"
 104     }
 105     -re "Breakpoint \[0-9\]*, $hex in marker2.*$gdb_prompt $" {
 106         xfail "$test"
 107     }
 108 }
 109
 110 gdb_test "info break $bp" \
 111     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+dis\[ \t\]+n.*" \
 112     "info auto-disabled break marker2 after hitting breakpoint"
 113
 114 # Verify that we don't stop at a disabled breakpoint.
 115 gdb_continue_to_end "no stop"
 116
 117 set count 1
 118 with_test_prefix "run $count" {
 119     rerun_to_main
 120     incr count
 121 }
 122 gdb_continue_to_end "no stop at auto-disabled break marker2"
 123
 124 # Verify that we can set a breakpoint to be self-deleting after the
 125 # first time it triggers.
 126 if {![runto_main]} {
 127     return
 128 }
 129
 130 set bp [break_at "marker3" " line $bp_location17"]
 131
 132 gdb_test_no_output "enable del $bp" "enable del break marker3"
 133
 134 gdb_test "info break $bp" \
 135     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+del\[ \t\]+y.*" \
 136     "info auto-deleted break marker2"
 137
 138 gdb_test "continue" \
 139     ".*marker3 .*:$bp_location17.*" \
 140     "continue to auto-deleted break marker3"
 141
 142 gdb_test "info break $bp" \
 143     ".*No breakpoint or watchpoint matching.*" \
 144     "info auto-deleted break marker3"
 145
 146 # Verify that we can set a breakpoint and manually disable it (we've
 147 # already proven that disabled bp's don't trigger).
 148
 149 set bp [break_at "marker4" " line $bp_location14.*"]
 150
 151 gdb_test_no_output "disable $bp" "disable break marker4"
 152
 153 gdb_test "info break $bp" \
 154     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+n.*" \
 155     "info break marker4"
 156
 157 if {![runto_main]} {
 158     return
 159 }
 160
 161 # Test enable count by stopping at a location until it is disabled
 162 # and passes through.
 163
 164 set bp [break_at $bp_location7 "line $bp_location7"]
 165
 166 with_test_prefix "enable count" {
 167   set bp2 [break_at marker1 " line $bp_location15"]
 168 }
 169
 170 gdb_test "enable count" \
 171     "Argument required \\(hit count\\)\\." \
 172     "enable count missing arguments"
 173
 174 gdb_test "enable count 2" \
 175     "Argument required \\(one or more breakpoint numbers\\)\\." \
 176     "enable count missing breakpoint number"
 177
 178 gdb_test_no_output "enable count 2 $bp" "disable break with count"
 179
 180 gdb_test "continue" \
 181     ".*factorial .*:$bp_location7.*" \
 182     "continue from enable count, first time"
 183
 184 gdb_test "continue" \
 185     ".*factorial .*:$bp_location7.*" \
 186     "continue from enable count, second time"
 187
 188 gdb_test "continue" \
 189     ".*marker1 .*:$bp_location15.*" \
 190     "continue through enable count, now disabled"
 191
 192 # Verify that we can set a breakpoint with an ignore count N, which
 193 # should cause the next N triggers of the bp to be ignored.  (This is
 194 # a flavor of enablement/disablement, after all.)
 195
 196 if {![runto_main]} {
 197     return
 198 }
 199
 200 with_test_prefix "ignore count" {
 201     set bp [break_at "marker1" " line $bp_location15.*"]
 202 }
 203
 204 # Verify that an ignore of a non-existent breakpoint is gracefully
 205 # handled.
 206
 207 gdb_test "ignore 999 2" \
 208     "No breakpoint number 999..*" \
 209     "ignore non-existent break"
 210
 211 # Verify that a missing ignore count is gracefully handled.
 212
 213 gdb_test "ignore $bp" \
 214     "Second argument .specified ignore-count. is missing..*" \
 215     "ignore break with missing ignore count"
 216
 217 # Verify that a negative or zero ignore count is handled gracefully
 218 # (they both are treated the same).
 219
 220 gdb_test "ignore $bp -1" \
 221     "Will stop next time breakpoint \[0-9\]* is reached..*" \
 222     "ignore break marker1 -1"
 223
 224 gdb_test "ignore $bp 0" \
 225     "Will stop next time breakpoint \[0-9\]* is reached..*" \
 226     "ignore break marker1 0"
 227
 228 gdb_test "ignore $bp 1" \
 229     "Will ignore next crossing of breakpoint \[0-9\]*.*" \
 230     "ignore break marker1 1"
 231
 232 gdb_test "info break $bp" \
 233     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+y.*ignore next 1 hits.*" \
 234     "info ignored break marker1"
 235
 236 gdb_continue_to_end "no stop at ignored break marker1"
 237
 238 with_test_prefix "run $count" {
 239     rerun_to_main
 240     incr count
 241 }
 242
 243 # See the comments in condbreak.exp for "run until breakpoint at marker1"
 244 # for an explanation of the xfail below.
 245 set test "continue to break marker1, 2nd time"
 246 gdb_test_multiple "continue" "$test" {
 247     -re "Breakpoint \[0-9\]*, marker1.*$gdb_prompt $" {
 248         pass "continue to break marker1, 2nd time"
 249     }
 250     -re "Breakpoint \[0-9\]*, $hex in marker1.*$gdb_prompt $" {
 251         xfail "continue to break marker1, 2nd time"
 252     }
 253 }
 254
 255 # Verify that we can specify both an ignore count and an auto-delete.
 256
 257 if {![runto_main]} {
 258     return
 259 }
 260
 261 with_test_prefix "ignore count and auto-delete" {
 262     set bp [break_at marker1 " line $bp_location15.*"]
 263 }
 264
 265 gdb_test "ignore $bp 1" \
 266     "Will ignore next crossing of breakpoint \[0-9\]*.*" \
 267     "ignore break marker1"
 268
 269 gdb_test_no_output "enable del $bp" "enable del break marker1"
 270
 271 gdb_test "info break $bp" \
 272     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+del\[ \t\]+y.*ignore next 1 hits.*" \
 273     "info break marker1 after hitting breakpoint"
 274
 275 gdb_continue_to_end "no stop at ignored & auto-deleted break marker1"
 276
 277 with_test_prefix "run $count" {
 278     rerun_to_main
 279     incr count
 280 }
 281
 282 gdb_test "continue" \
 283     ".*marker1 .*:$bp_location15.*" \
 284     "continue to ignored & auto-deleted break marker1"
 285
 286 # Verify that a disabled breakpoint's ignore count isn't updated when
 287 # the bp is encountered.
 288
 289 if {![runto_main]} {
 290     return
 291 }
 292
 293 with_test_prefix "disabled breakpoint ignore count" {
 294     set bp [break_at marker1 " line $bp_location15"]
 295 }
 296
 297 gdb_test "ignore $bp 10" \
 298     "Will ignore next 10 crossings of breakpoint \[0-9\]*.*" \
 299     "ignore break marker1 10"
 300
 301 gdb_test_no_output "disable $bp" "disable break marker1"
 302
 303 gdb_continue_to_end "no stop at ignored & disabled break marker1"
 304
 305 with_test_prefix "run $count" {
 306     rerun_to_main
 307 }
 308
 309 gdb_test "info break $bp" \
 310     "\[0-9\]*\[ \t\]+breakpoint\[ \t\]+keep\[ \t\]+n.*ignore next 10 hits.*" \
 311     "info ignored & disabled break marker1"
 312
 313 # Verify that GDB correctly handles the "continue" command with an argument,
 314 # which is an ignore count to set on the currently stopped-at breakpoint.
 315 # (Also verify that GDB gracefully handles the case where the inferior
 316 # isn't stopped at a breakpoint.)
 317 #
 318 if {![runto_main]} {
 319     return
 320 }
 321
 322 gdb_test "break $bp_location1" \
 323     "Breakpoint \[0-9\]*.*, line $bp_location1.*" \
 324     "prepare to continue with ignore count"
 325
 326 gdb_test "continue 2" \
 327     "Will ignore next crossing of breakpoint \[0-9\]*.  Continuing..*" \
 328     "continue with ignore count"
 329
 330 gdb_test "next" ".*$bp_location11\[ \t\]*marker1.*" \
 331     "step after continue with ignore count"
 332
 333 set test "continue with ignore count, not stopped at bpt"
 334 gdb_test_multiple "continue 2" "$test" {
 335     -re "Not stopped at any breakpoint; argument ignored.*$gdb_prompt $" {
 336         pass "$test"
 337     }
 338     -re "No breakpoint number -1.*$gdb_prompt $" {
 339         kfail gdb/1689 "$test"
 340     }
 341 }
 342
 343 # Verify that GDB correctly handles the "enable/disable" command
 344 # with arguments, that include multiple locations.
 345 #
 346 if {![runto_main]} {
 347     return
 348 }
 349
 350 set b1 0
 351 set b2 0
 352 set b3 0
 353 set b4 0
 354 set b1 [break_at main ""]
 355
 356 with_test_prefix "2nd breakpoint" {
 357     set b2 [break_at main ""]
 358 }
 359
 360 with_test_prefix "3rd breakpoint" {
 361     set b3 [break_at main ""]
 362 }
 363
 364 with_test_prefix "4th breakpoint" {
 365     set b4 [break_at main ""]
 366 }
 367
 368 # Perform tests for disable/enable commands on multiple
 369 # code locations and breakpoints.  If a breakpoint has only one code location,
 370 # enable/disable num  and enable/disable num.1 should be equivalent.
 371 #
 372 # WHAT - the command to test (disable/enable).
 373 #
 374 # Note: tests involving location ranges (and more) are found in
 375 # gdb.cp/ena-dis-br-range.exp.
 376 #
 377 proc test_ena_dis_br { what } {
 378     global b1
 379     global b2
 380     global b3
 381     global b4
 382     global gdb_prompt
 383
 384     # OPPOS    - the command opposite to WHAT.
 385     # WHAT_RES - whether breakpoints are expected to end
 386     #            up enabled or disabled.
 387     # OPPOS_RES- same as WHAT_RES but opposite.
 388     # P1/P2    - proc to call (pass/fail).  Must be
 389     #            opposites.
 390     # Set variable values for disable command.
 391     set oppos "enable"
 392     set oppos_res "y"
 393     set what_res "n"
 394     set p1 "pass"
 395     set p2 "fail"
 396
 397     if { "$what" == "enable" } {
 398         # Set varibale values for enable command.
 399         set oppos "disable"
 400         set oppos_res "n"
 401         set what_res "y"
 402         set p1 "fail"
 403         set p2 "pass"
 404     }
 405
 406     # Now enable(disable) $b1.1 $b2.1.
 407     gdb_test_no_output "$what $b1.1 $b2.1" "$what \$b1.1 \$b2.1"
 408     set test1 "${what}d \$b1.1 and \$b2.1"
 409
 410     # Now $b1.1 and $b2.1 should be enabled(disabled).
 411     gdb_test_multiple "info break" "$test1" {
 412        -re "(${b1})(\[^\n\r\]*)( n.*)(${b2})(\[^\n\r\]*)( n.*)$gdb_prompt $" {
 413            $p1 "$test1"
 414        }
 415        -re ".*$gdb_prompt $" {
 416            $p2 "$test1"
 417        }
 418     }
 419
 420     # Now enable(disable) $b1 fooo.1, it should give error on fooo.
 421     gdb_test "$what $b1 fooo.1" \
 422        "Bad breakpoint number 'fooo\\.1'" \
 423        "$what \$b1 fooo.1"
 424
 425     # $b1 should be enabled(disabled).
 426     gdb_test "info break" \
 427        "(${b1})(\[^\n\r]*)( $what_res.*)" \
 428        "${what}d \$b1"
 429
 430     gdb_test_no_output "$oppos $b3" "$oppos \$b3"
 431     # Now $b4 $b3 should be enabled(disabled)
 432     set test1 "${what}d \$b4 and \$b3"
 433     gdb_test "info break" "(${b3})(\[^\n\r]*)( $oppos_res.*).*(${b4})(\[^\n\r\]*)( $oppos_res.*)" "$test1"
 434
 435     gdb_test_no_output "$what $b4 $b3.1" "$what \$b4 \$b3.1"
 436     set test1 "${what}d \$b4 and \$b3.1, changing \$b3"
 437
 438     # Now $b4 $b3 should be enabled(disabled)
 439     gdb_test "info break" "(${b3})(\[^\n\r]*)( $what_res.*).*(${b4})(\[^\n\r\]*)( $what_res.*)" "$test1"
 440
 441
 442     # Now enable(disable) '$b4.1 fooobaar'.  This should error on
 443     # fooobaar.
 444     gdb_test "$what $b4.1 fooobaar" \
 445        "Bad breakpoint number 'fooobaar'" \
 446        "$what \$b4.1 fooobar"
 447     set test1 "${what}d \$b4.1"
 448
 449     # $b4.1 should be enabled(disabled).
 450     gdb_test_multiple "info break" "$test1" {
 451         -re "(${b4})(\[^\n\r\]*)( n.*)$gdb_prompt $" {
 452            $p1 "$test1"
 453        }
 454        -re ".*$gdb_prompt $" {
 455            $p2 "$test1"
 456        }
 457     }
 458 }
 459
 460 test_ena_dis_br "disable"
 461 test_ena_dis_br "enable"
 462
 463 gdb_exit