1 # Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009
2 # Free Software Foundation, Inc.
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.
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.
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/>.
17 # This file was written by Fred Fish. (fnf@cygnus.com)
26 set testfile "watchpoint"
27 set srcfile ${testfile}.c
28 set binfile ${objdir}/${subdir}/${testfile}
32 if [get_compiler_info ${binfile}] {
36 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
37 untested watchpoint.exp
41 # Prepare for watchpoint tests by setting up two breakpoints and one
44 # We use breakpoints at marker functions to get past all the startup code,
45 # so we can get to the watchpoints in a reasonable amount of time from a
46 # known starting point.
48 # For simplicity, so we always know how to reference specific breakpoints or
49 # watchpoints by number, we expect a particular ordering and numbering of
50 # each in the combined breakpoint/watchpoint table, as follows:
53 # 1 Breakpoint marker1()
54 # 2 Breakpoint marker2()
64 # Disable hardware watchpoints if necessary.
65 if [target_info exists gdb,no_hardware_watchpoints] {
66 gdb_test "set can-use-hw-watchpoints 0" "" ""
69 if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
74 if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
79 if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
84 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
85 # before running can cause the inferior to croak on HP-UX 11.0 for
86 # reasons yet unknown, we've disabled the ability to set watches
87 # without a running inferior. Verify the restriction.
89 send_gdb "watch ival3\n"
91 -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
92 pass "set watchpoint on ival3"
94 -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
95 pass "set watchpoint on ival3"
100 fail "(timeout) set watchpoint on ival3"
105 # "info watch" is the same as "info break"
107 if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
112 # After installing the watchpoint, we disable it until we are ready
113 # to use it. This allows the test program to run at full speed until
114 # we get to the first marker function.
116 if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
125 # Test simple watchpoint.
128 proc test_simple_watchpoint {} {
134 # Ensure that the watchpoint is disabled when we startup.
137 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
143 # Run until we get to the first marker function.
148 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
149 pass "run to marker1 in test_simple_watchpoint"
151 -re ".*$gdb_prompt $" {
152 fail "run to marker1 in test_simple_watchpoint"
156 fail "run to marker1 in test_simple_watchpoint (timeout)"
162 # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
163 # before running can cause the inferior to croak on HP-UX 11.0
164 # for reasons yet unknown, we've disabled the ability to set
165 # watches without a running inferior. The following testpoints used
166 # to be in [initialize].
168 send_gdb "watch ival3\n"
170 -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
171 pass "set watchpoint on ival3"
173 -re ".*$gdb_prompt $" { fail "set watchpoint on ival3" }
174 timeout { fail "set watchpoint on ival3 (timeout)" }
179 # "info watch" is the same as "info break"
181 send_gdb "info watch\n"
183 -re "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
184 pass "watchpoint found in watchpoint/breakpoint table"
186 -re ".*$gdb_prompt $" {
187 fail "watchpoint found in watchpoint/breakpoint table"
190 fail "watchpoint found in watchpoint/breakpoint table"
194 # After installing the watchpoint, we disable it until we are ready
195 # to use it. This allows the test program to run at full speed until
196 # we get to the first marker function.
198 send_gdb "disable 3\n"
200 -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
201 -re ".*$gdb_prompt $" { fail "disable watchpoint" }
202 timeout { fail "disable watchpoint (timeout)" }
206 # After reaching the marker function, enable the watchpoint.
208 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
213 gdb_test "break func1" "Breakpoint.*at.*"
214 gdb_test "set \$func1_breakpoint_number = \$bpnum" ""
216 gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
217 "continue to breakpoint at func1"
219 # Continue until the first change, from -1 to 0
223 -re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
224 pass "watchpoint hit, first time"
226 -re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
227 setup_xfail "m68*-*-*" 2597
228 fail "thought it hit breakpoint at func1 twice"
229 gdb_test "delete \$func1_breakpoint_number" ""
230 gdb_test "continue" "\
231 Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
232 "watchpoint hit, first time"
234 -re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
235 timeout { fail "watchpoint hit, first time (timeout)" ; return }
236 eof { fail "watchpoint hit, first time (eof)" ; return }
239 # Check that the hit count is reported correctly
240 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1"
242 gdb_test "delete \$func1_breakpoint_number" ""
244 # Continue until the next change, from 0 to 1.
245 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
247 # Check that the hit count is reported correctly
248 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
250 # Continue until the next change, from 1 to 2.
251 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
253 # Check that the hit count is reported correctly
254 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
256 # Continue until the next change, from 2 to 3.
257 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
259 # Check that the hit count is reported correctly
260 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4"
262 # Continue until the next change, from 3 to 4.
263 # Note that this one is outside the loop.
265 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
267 # Check that the hit count is reported correctly
268 gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
270 # Continue until we hit the finishing marker function.
271 # Make sure we hit no more watchpoints.
273 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
274 "continue to marker2"
276 # Disable the watchpoint so we run at full speed until we exit.
278 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
283 # Run until process exits.
285 if [target_info exists gdb,noresults] { return }
287 gdb_continue_to_end "continue to exit in test_simple_watchpoint"
290 # Test disabling watchpoints.
292 proc test_disabling_watchpoints {} {
299 # "info watch" is the same as "info break"
300 gdb_test "info watch" "\[0-9\]+\[ \]*breakpoint.*marker1.*\r\n\[0-9\]+\[ \]*breakpoint.*marker2.*\r\n\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
302 # Ensure that the watchpoint is disabled when we startup.
304 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
309 # Run until we get to the first marker function.
314 -re "Breakpoint 1, marker1 .*$gdb_prompt $" {
315 pass "run to marker1 in test_disabling_watchpoints"
317 -re ".*$gdb_prompt $" {
318 fail "run to marker1 in test_disabling_watchpoints"
322 fail "run to marker1 in test_disabling_watchpoints (timeout)"
327 # After reaching the marker function, enable the watchpoint.
329 if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
334 # Continue until the first change, from -1 to 0
335 # Don't check the old value, because on VxWorks the variable value
336 # will not have been reinitialized.
337 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
339 # Continue until the next change, from 0 to 1.
340 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, second time"
342 # Disable the watchpoint but leave breakpoints
344 if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
349 # Check watchpoint list, looking for the entry that confirms the
350 # watchpoint is disabled.
351 gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
353 # Continue until we hit the finishing marker function.
354 # Make sure we hit no more watchpoints.
355 gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
356 "disabled watchpoint skipped"
358 if [target_info exists gdb,noresults] { return }
360 gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
363 # Test stepping and other mundane operations with watchpoints enabled
364 proc test_stepping {} {
367 if [runto marker1] then {
368 gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
370 # Well, let's not be too mundane. It should be a *bit* of a challenge
371 gdb_test "break func2 if 0" "Breakpoint.*at.*"
372 gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
374 gdb_test "p func1 ()" "= 73" \
375 "calling function with watchpoint enabled"
378 # "finish" brings us back to main.
379 # On some targets (e.g. alpha) gdb will stop from the finish in midline
380 # of the marker1 call. This is due to register restoring code on
381 # the alpha and might be caused by stack adjustment instructions
382 # on other targets. In this case we will step once more.
387 -re "Run.*exit from.*marker1.* at" {
388 pass "finish from marker1"
390 default { fail "finish from marker1 (timeout)" ; return }
394 -re "marker1 \\(\\);.*$gdb_prompt $" {
398 -re "func1 \\(\\);.*$gdb_prompt $" {
399 pass "back at main from marker1"
401 -re ".*$gdb_prompt $" {
402 fail "back at main from marker1"
404 default { fail "back at main from marker1 (timeout)" ; return }
407 gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
409 # Now test that "until" works. It's a bit tricky to test
410 # "until", because compilers don't always arrange the code
411 # exactly the same way, and we might get slightly different
412 # sequences of statements. But the following should be true
413 # (if not it is a compiler or a debugger bug): The user who
414 # does "until" at every statement of a loop should end up
415 # stepping through the loop once, and the debugger should not
416 # stop for any of the remaining iterations.
418 gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
419 gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
422 -re "(for \\(count = 0|\}).*$gdb_prompt $" {
423 gdb_test "until" "ival1 = count; /. Outside loop ./" \
426 -re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
427 pass "until out of loop"
429 -re ".*$gdb_prompt $" {
430 fail "until out of loop"
432 default { fail "until out of loop (timeout)" ; return }
435 gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
439 # Test stepping and other mundane operations with watchpoints enabled
440 proc test_watchpoint_triggered_in_syscall {} {
443 # These tests won't work without printf support.
444 if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
447 # Run until we get to the first marker function.
450 set testname "Watch buffer passed to read syscall"
451 if [runto marker2] then {
452 gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
453 gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
454 gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
455 gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
456 gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
457 gdb_test "break marker4" ".*Breakpoint.*"
459 gdb_test "set doread = 1" ""
461 # If we send_gdb "123\n" before gdb has switched the tty, then it goes
462 # to gdb, not the inferior, and we lose. So that is why we have
463 # watchpoint.c prompt us, so we can wait for that prompt.
464 send_gdb "continue\n";
466 -re "Continuing\\.\r\ntype stuff for buf now:" {
467 pass "continue to read"
470 fail "continue to read";
477 -re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
478 -re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
479 -re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
480 -re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
481 -re ".*$gdb_prompt $" { pass "sent 123" }
482 timeout { fail "sent 123 (timeout)" }
485 # Examine the values in buf to see how many watchpoints we
486 # should have printed.
487 send_gdb "print buf\[0\]\n"
489 -re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
490 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
491 -re ".*$gdb_prompt $" { fail "print buf\[0\]"}
492 default { fail "print buf\[0\]"}
494 send_gdb "print buf\[1\]\n"
496 -re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
497 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
498 -re ".*$gdb_prompt $" { fail "print buf\[1\]"}
499 default { fail "print buf\[1\]"}
501 send_gdb "print buf\[2\]\n"
503 -re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
504 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
505 -re ".*$gdb_prompt $" { fail "print buf\[2\]"}
506 default { fail "print buf\[2\]"}
508 send_gdb "print buf\[3\]\n"
510 -re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
511 -re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
512 -re ".*$gdb_prompt $" { fail "print buf\[3\]" }
513 default { fail "print buf\[3\]" }
516 # Did we find what we were looking for? If not, flunk it.
517 if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
519 # Continue until we hit the finishing marker function.
520 # Make sure we hit no more watchpoints.
521 gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
522 "continue to marker4"
524 # Disable everything so we can finish the program at full speed
525 gdb_test "disable" "" "disable in test_watchpoint_triggered_in_syscall"
527 if [target_info exists gdb,noresults] { return }
529 gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall"
533 # Do a simple test of of watching through a pointer when the pointer
534 # itself changes. Should add some more complicated stuff here.
536 proc test_complex_watchpoint {} {
539 if [runto marker4] then {
540 gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
541 gdb_test "break marker5" ".*Breakpoint.*"
543 gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
545 # Continue until we hit the marker5 function.
546 # Make sure we hit no more watchpoints.
548 gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
549 "did not trigger wrong watchpoint"
551 # Test watches of things declared locally in a function.
552 # In particular, test that a watch of stack-based things
553 # is deleted when the stack-based things go out of scope.
555 gdb_test "disable" "" "disable in test_complex_watchpoint"
556 gdb_test "break marker6" ".*Breakpoint.*"
557 gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
558 "continue to marker6"
559 gdb_test "break func2" ".*Breakpoint.*"
560 gdb_test "cont" "Continuing.*func2.*"
562 # Test a watch of a single stack-based variable, whose scope
563 # is the function we're now in. This should auto-delete when
564 # execution exits the scope of the watchpoint.
566 gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
567 gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
568 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
570 gdb_test "cont" "Continuing.*func2.*"
571 # We should be in "func2" again now. Test a watch of an
572 # expression which includes both a stack-based local and
573 # something whose scope is larger than this invocation
574 # of "func2". This should also auto-delete.
576 gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
577 "set partially local watch"
578 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
579 "trigger1 partially local watch"
580 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
581 "trigger2 partially local watch"
582 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
583 "self-delete partially local watch"
585 # We should be in "func2" again now. Test a watch of a
586 # static (non-stack-based) local. Since this has scope
587 # across any invocations of "func2", it should not auto-
590 gdb_test "cont" "Continuing.*func2.*"
591 gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
592 "set static local watch"
593 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
594 "trigger static local watch"
595 gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
596 "continue after trigger static local watch"
597 gdb_test "info break" ".*watchpoint.*static_b.*" \
598 "static local watch did not self-delete"
600 # We should be in "recurser" now. Test a watch of a stack-
601 # based local. Symbols mentioned in a watchpoint are bound
602 # at watchpoint-creation. Thus, a watch of a stack-based
603 # local to a recursing function should be bound only to that
604 # one invocation, and should not trigger for other invocations.
606 gdb_test "tbreak recurser" ".*breakpoint.*"
607 gdb_test "cont" "Continuing.*recurser.*"
608 gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
609 "set local watch in recursive call"
610 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
611 "trigger local watch in recursive call"
612 gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
613 "self-delete local watch in recursive call"
615 # Disable everything so we can finish the program at full speed
616 gdb_test "disable" "" "disable in test_complex_watchpoint"
618 if [target_info exists gdb,noresults] { return }
620 gdb_continue_to_end "continue to exit in test_complex_watchpoint"
624 proc test_watchpoint_and_breakpoint {} {
627 # This is a test for PR gdb/38, which involves setting a
628 # watchpoint right after you've reached a breakpoint.
630 if [runto func3] then {
631 gdb_breakpoint [gdb_get_line_number "second x assignment"]
632 gdb_continue_to_breakpoint "second x assignment"
633 gdb_test "watch x" ".*atchpoint \[0-9\]+: x"
634 gdb_test_multiple "next" "next after watch x" {
635 -re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" {
636 pass "next after watch x"
638 -re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" {
639 kfail "gdb/38" "next after watch x"
645 proc test_inaccessible_watchpoint {} {
648 # This is a test for watchpoints on currently inaccessible (but later
651 if [runto func4] then {
652 # Make sure we only allow memory access errors.
653 set msg "watchpoint refused to insert on nonexistent struct member"
654 gdb_test_multiple "watch struct1.nosuchmember" $msg {
655 -re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" {
656 # PR breakpoints/9681
659 -re "There is no member named nosuchmember\\..*$gdb_prompt $" {
664 gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr"
665 gdb_test "next" ".*global_ptr = buf.*"
666 gdb_test_multiple "next" "next over ptr init" {
667 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" {
668 # We can not test for <unknown> here because NULL may be readable.
669 # This test does rely on *NULL != 3.
670 pass "next over ptr init"
673 gdb_test_multiple "next" "next over buffer set" {
674 -re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" {
675 pass "next over buffer set"
681 # Start with a fresh gdb.
685 gdb_reinitialize_dir $srcdir/$subdir
687 set prev_timeout $timeout
689 verbose "Timeout now 600 sec.\n"
691 if [initialize] then {
693 test_simple_watchpoint
695 # The IDT/sim monitor only has 8 (!) open files, of which it uses
696 # 4 (!). So we have to make sure one program exits before
697 # starting another one.
698 if [istarget "mips-idt-*"] then {
701 gdb_reinitialize_dir $srcdir/$subdir
706 test_disabling_watchpoints
709 if [istarget "mips-idt-*"] then {
712 gdb_reinitialize_dir $srcdir/$subdir
717 if ![target_info exists gdb,cannot_call_functions] {
721 if [istarget "mips-idt-*"] then {
724 gdb_reinitialize_dir $srcdir/$subdir
730 # Only enabled for some targets merely because it has not been tested
732 # On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
733 # breakpoint before stopping for the watchpoint. I don't know why.
734 if {[istarget "hppa*-*-*"]} then {
735 test_watchpoint_triggered_in_syscall
739 if [istarget "mips-idt-*"] then {
742 gdb_reinitialize_dir $srcdir/$subdir
747 # Only enabled for some targets merely because it has not been tested
749 if {[istarget "hppa*-*-*"] || \
750 [istarget "sparc*-*-sunos*"] || \
751 [istarget "m32r-*-*"]} then {
752 test_complex_watchpoint
755 # Verify that a user can force GDB to use "slow" watchpoints.
756 # (This proves rather little on kernels that don't support
757 # fast watchpoints, but still...)
759 if ![runto_main] then { fail "watch tests suppressed" }
761 send_gdb "set can-use-hw-watchpoints 0\n"
764 {pass "disable fast watches"}
765 timeout {fail "(timeout) disable fast watches"}
767 send_gdb "show can-use-hw-watchpoints\n"
769 -re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
770 {pass "show disable fast watches"}
772 {fail "show disable fast watches"}
773 timeout {fail "(timeout) show disable fast watches"}
775 send_gdb "watch ival3 if count > 1\n"
777 -re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
778 {pass "set slow conditional watch"}
780 {fail "set slow conditional watch"}
781 timeout {fail "(timeout) set slow conditional watch"}
783 send_gdb "continue\n"
785 -re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
786 {pass "trigger slow conditional watch"}
788 {fail "trigger slow conditional watch"}
789 timeout {fail "(timeout) trigger slow conditional watch"}
792 # We've explicitly disabled hardware watches. Verify that GDB
793 # refrains from using them.
795 send_gdb "rwatch ival3\n"
797 -re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
798 {pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
800 {fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
801 timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
804 # Read- and access watchpoints are unsupported on HP-UX. Verify
805 # that GDB gracefully responds to requests to create them.
807 if [istarget "hppa*-*-hpux*"] then {
808 send_gdb "set can-use-hw-watchpoints 1\n"
811 {pass "enable fast watches"}
812 timeout {fail "(timeout) enable fast watches"}
814 send_gdb "rwatch ival3\n"
816 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
817 {pass "read watches disallowed"}
819 {fail "read watches disallowed"}
820 timeout {fail "(timeout) read watches disallowed"}
823 send_gdb "awatch ival3\n"
825 -re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
826 {pass "access watches disallowed"}
828 {fail "access watches disallowed"}
829 timeout {fail "(timeout) access watches disallowed"}
833 test_inaccessible_watchpoint
836 if [istarget "mips-idt-*"] then {
839 gdb_reinitialize_dir $srcdir/$subdir
844 test_watchpoint_and_breakpoint
847 # Restore old timeout
848 set timeout $prev_timeout
849 verbose "Timeout now $timeout sec.\n"