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binutils-gdb/gdb/testsuite/gdb.python/py-breakpoint.exp
Andrew Burgess e2f620135d gdb/testsuite: change newline patterns used in gdb_test 
This commit makes two changes to how we match newline characters in
the gdb_test proc.

First, for the newline pattern between the command output and the
prompt, I propose changing from '[\r\n]+' to an explicit '\r\n'.

The old pattern would spot multiple newlines, and so there are a few
places where, as part of this commit, I've needed to add an extra
trailing '\r\n' to the pattern in the main test file, where GDB's
output actually includes a blank line.

But I think this is a good thing.  If a command produces a blank line
then we should be checking for it, the current gdb_test doesn't do
that.  But also, with the current gdb_test, if a blank line suddenly
appears in the output, this is going to be silently ignored, and I
think this is wrong, the test should fail in that case.

Additionally, the existing pattern will happily match a partial
newline.  There are a strangely large number of tests that end with a
random '.' character.  Not matching a literal period, but matching any
single character, this is then matching half of the trailing newline
sequence, while the \[\r\n\]+ in gdb_test is matching the other half
of the sequence.  I can think of no reason why this would be
intentional, I suspect that the expected output at one time included a
period, which has since been remove, but I haven't bothered to check
on this.  In this commit I've removed all these unneeded trailing '.'
characters.

The basic rule of gdb_test after this is that the expected pattern
needs to match everything up to, but not including the newline
sequence immediately before the GDB prompt.  This is generally how the
proc is used anyway, so in almost all cases, this commit represents no
significant change.

Second, while I was cleaning up newline matching in gdb_test, I've
also removed the '[\r\n]*' that was added to the start of the pattern
passed to gdb_test_multiple.

The addition of this pattern adds no value.  If the user pattern
matches at the start of a line then this would match against the
newline sequence.  But, due to the '*', if the user pattern doesn't
match at the start of a line then this group doesn't care, it'll
happily match nothing.

As such, there's no value to it, it just adds more complexity for no
gain, so I'm removing it.  No tests will need updating as a
consequence of this part of the patch.

Reviewed-By: Tom Tromey <tom@tromey.com>
2023-04-27 13:56:37 +01:00

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# Copyright (C) 2010-2023 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This file is part of the GDB testsuite. It tests the mechanism
# exposing breakpoints to Python.
# The allow_hw_watchpoint_tests checks if watchpoints are supported by the
# processor. On PowerPC, the check runs a small test program under gdb
# to determine if the Power processor supports HW watchpoints. The check
# must be done before starting the test so as to not disrupt the execution
# of the actual test.
set allow_hw_watchpoint_tests_p [allow_hw_watchpoint_tests]
load_lib gdb-python.exp
require allow_python_tests
standard_testfile
set options {debug c++}
if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} ${options}] } {
return -1
}
set past_throw_catch_line [gdb_get_line_number "Past throw-catch."]
proc_with_prefix test_bkpt_basic { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
# We should start with no breakpoints.
gdb_test "python print (gdb.breakpoints())" "\\(\\)"
if {![runto_main]} {
return 0
}
# Now there should be one breakpoint: main.
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (blist\[0\])" \
"<gdb.Breakpoint object at $hex>" "Check obj exists @main"
gdb_test "python print (blist\[0\].location)" \
"main" "Check breakpoint location @main"
gdb_test "python print (blist\[0\].pending)" "False" \
"Check pending status of main breakpoint"
set mult_line [gdb_get_line_number "Break at multiply."]
gdb_breakpoint ${mult_line}
gdb_continue_to_breakpoint "Break at multiply" \
".*Break at multiply.*"
# Check that the Python breakpoint code noted the addition of a
# breakpoint "behind the scenes".
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (len(blist))" \
"2" "Check for two breakpoints"
gdb_test "python print (blist\[0\])" \
"<gdb.Breakpoint object at $hex>" "Check obj exists @main 2"
gdb_test "python print (blist\[0\].location)" \
"main" "Check breakpoint location @main 2"
gdb_test "python print (blist\[1\])" \
"<gdb.Breakpoint object at $hex>" "Check obj exists @mult_line"
gdb_test "python print (blist\[1\].location)" \
"py-breakpoint\.c:${mult_line}*" \
"check breakpoint location @mult_line"
# Check hit and ignore counts.
gdb_test "python print (blist\[1\].hit_count)" \
"1" "Check breakpoint hit count @1"
gdb_py_test_silent_cmd "python blist\[1\].ignore_count = 4" \
"Set breakpoint hit count" 0
gdb_continue_to_breakpoint "Break at multiply @6" \
".*Break at multiply.*"
gdb_test "python print (blist\[1\].hit_count)" \
"6" "Check breakpoint hit count @6"
gdb_test "print result" \
" = 545" "Check expected variable result after 6 iterations"
# Test breakpoint is enabled and disabled correctly..
gdb_breakpoint [gdb_get_line_number "Break at add."]
gdb_continue_to_breakpoint "Break at add 1" ".*Break at add.*"
gdb_test "python print (blist\[1\].enabled)" \
"True" "Check breakpoint enabled."
gdb_py_test_silent_cmd "python blist\[1\].enabled = False" \
"Set breakpoint disabled." 0
gdb_continue_to_breakpoint "Break at add 2" ".*Break at add.*"
gdb_py_test_silent_cmd "python blist\[1\].enabled = True" \
"Set breakpoint enabled." 0
gdb_continue_to_breakpoint "Break at multiply after re-enable" \
".*Break at multiply.*"
# Test other getters and setters.
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (blist\[1\].thread)" \
"None" "Check breakpoint thread"
gdb_test "python print (blist\[1\].type == gdb.BP_BREAKPOINT)" \
"True" "Check breakpoint type"
gdb_test "python print (blist\[0\].number)" \
"1" "Check breakpoint number 0"
gdb_test "python print (blist\[1\].number)" \
"2" "Check breakpoint number 1"
gdb_test "python print (blist\[2\].number)" \
"3" "Check breakpoint number 2"
}
proc_with_prefix test_bkpt_deletion { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
# Test breakpoints are deleted correctly.
set deltst_location [gdb_get_line_number "Break at multiply."]
set end_location [gdb_get_line_number "Break at end."]
gdb_py_test_silent_cmd "python dp1 = gdb.Breakpoint (\"$deltst_location\")" \
"Set breakpoint" 0
gdb_breakpoint [gdb_get_line_number "Break at end."]
gdb_py_test_silent_cmd "python del_list = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (len(del_list))" \
"3" "Number of breakpoints before delete"
gdb_continue_to_breakpoint "Break at multiply." \
".*$srcfile:$deltst_location.*"
gdb_py_test_silent_cmd "python dp1.delete()" \
"Delete Breakpoint" 0
gdb_test "python print (dp1.number)" \
"RuntimeError: Breakpoint 2 is invalid.*" \
"Check breakpoint invalidated"
gdb_py_test_silent_cmd "python del_list = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (len(del_list))" \
"2" "Number of breakpoints after delete"
gdb_continue_to_breakpoint "Break at end." \
".*$srcfile:$end_location.*"
}
proc_with_prefix test_bkpt_cond_and_cmds { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
# Test conditional setting.
set bp_location1 [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (\"$bp_location1\")" \
"Set breakpoint" 0
gdb_continue_to_breakpoint "Break at multiply" \
".*Break at multiply.*"
gdb_py_test_silent_cmd "python bp1.condition = \"i == 5\"" \
"Set breakpoint" 0
gdb_test "python print (bp1.condition)" "i == 5" \
"Test conditional has been set"
gdb_continue_to_breakpoint "Break at multiply @5" \
".*Break at multiply.*"
gdb_test "print i" \
"5" "Test conditional breakpoint stopped after five iterations"
gdb_py_test_silent_cmd "python bp1.condition = None" \
"Clear condition" 0
gdb_test "python print (bp1.condition)" \
"None" "Test conditional read"
gdb_continue_to_breakpoint "Break at multiply @6" \
".*Break at multiply.*"
gdb_test "print i" \
"6" "Test breakpoint stopped after six iterations"
# Test commands.
gdb_breakpoint [gdb_get_line_number "Break at add."]
set test {commands $bpnum}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
set test {print "Command for breakpoint has been executed."}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
set test {print result}
gdb_test_multiple $test $test { -re "\r\n>$" { pass $test } }
gdb_test "end"
gdb_py_test_silent_cmd "python blist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_py_test_silent_cmd "python last_bp = blist\[len(blist)-1\]" \
"Find last breakpoint" 0
gdb_test "python print (last_bp.commands)" \
"print \"Command for breakpoint has been executed.\".*print result\r\n"
gdb_test_no_output "python last_bp.commands = 'echo hi\\necho there'" \
"set commands"
# Note the length is 3 because the string ends in a \n.
gdb_test "python print (len(last_bp.commands.split('\\n')))" "3" \
"check number of lines in commands"
}
proc_with_prefix test_bkpt_invisible { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
delete_breakpoints
set ibp_location [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd "python ibp = gdb.Breakpoint(\"$ibp_location\", internal=False)" \
"Set invisible breakpoint" 0
gdb_py_test_silent_cmd "python ilist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (ilist\[0\])" \
"<gdb.Breakpoint object at $hex>" "Check invisible bp obj exists 1"
gdb_test "python print (ilist\[0\].location)" \
"py-breakpoint\.c:$ibp_location*" "Check breakpoint location 1"
gdb_test "python print (ilist\[0\].visible)" \
"True" "Check breakpoint visibility 1"
gdb_test "info breakpoints" "py-breakpoint\.c:$ibp_location.*" \
"Check info breakpoints shows visible breakpoints"
delete_breakpoints
gdb_py_test_silent_cmd "python ibp = gdb.Breakpoint(\"$ibp_location\", internal=True)" \
"Set invisible breakpoint" 0
gdb_py_test_silent_cmd "python ilist = gdb.breakpoints()" \
"Get Breakpoint List" 0
gdb_test "python print (ilist\[0\])" \
"<gdb.Breakpoint object at $hex>" "Check invisible bp obj exists 2"
gdb_test "python print (ilist\[0\].location)" \
"py-breakpoint\.c:$ibp_location*" "Check breakpoint location 2"
gdb_test "python print (ilist\[0\].visible)" \
"False" "Check breakpoint visibility 2"
gdb_test "info breakpoints" "No breakpoints or watchpoints.*" \
"Check info breakpoints does not show invisible breakpoints"
gdb_test "maint info breakpoints" \
"py-breakpoint\.c:$ibp_location.*" \
"Check maint info breakpoints shows invisible breakpoints"
}
proc_with_prefix test_hardware_breakpoints { } {
global srcfile testfile hex decimal
# Skip these tests if the HW does not support hardware breakpoints.
if { ![allow_hw_breakpoint_tests] } { return 0 }
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
delete_breakpoints
set bp_args {"add", type=gdb.BP_HARDWARE_BREAKPOINT, qualified=True}
gdb_test "python hbp1 = gdb.Breakpoint($bp_args)" \
".*Hardware assisted breakpoint ($decimal)+ at .*$srcfile, line ($decimal)+\." \
"Set hardware breakpoint"
gdb_test "python print (gdb.breakpoints()\[0\].type == gdb.BP_HARDWARE_BREAKPOINT)" \
"True" "Check hardware breakpoint type"
gdb_test "continue" \
".*Breakpoint ($decimal)+, add.*" \
"Test hardware breakpoint stop"
}
proc_with_prefix test_watchpoints { } {
global srcfile testfile hex decimal
global allow_hw_watchpoint_tests_p
# Start with a fresh gdb.
clean_restart ${testfile}
# Disable hardware watchpoints if necessary.
if {!$allow_hw_watchpoint_tests_p} {
gdb_test_no_output "set can-use-hw-watchpoints 0" ""
}
if {![runto $srcfile:$::past_throw_catch_line]} {
return 0
}
gdb_py_test_silent_cmd "python wp1 = gdb.Breakpoint (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE )" \
"Set watchpoint" 0
gdb_test "python print (wp1.pending)" "False"
gdb_test "continue" \
".*\[Ww\]atchpoint.*result.*Old value = 0.*New value = 25.*main.*" \
"Test watchpoint write"
}
proc_with_prefix test_bkpt_internal { } {
global srcfile testfile hex decimal
global allow_hw_watchpoint_tests_p
# Start with a fresh gdb.
clean_restart ${testfile}
# Disable hardware watchpoints if necessary.
if {!$allow_hw_watchpoint_tests_p} {
gdb_test_no_output "set can-use-hw-watchpoints 0" ""
}
if {![runto $srcfile:$::past_throw_catch_line]} {
return 0
}
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (\"main\", type=gdb.BP_BREAKPOINT, wp_class=gdb.WP_WRITE, internal=True )" \
"Set internal breakpoint" 0
set bp_num [get_python_valueof bp1.number "*DEFAULT*"]
set bp_addr [gdb_get_bp_addr $bp_num]
gdb_test "maint info break $bp_num" \
"$bp_num.*$bp_addr.*" \
"maint info breakpoint \$bp_num"
gdb_test "python gdb.execute(\'clear *$bp_addr\')" \
".*No breakpoint at \\*$bp_addr.*" \
"clear internal breakpoint"
# Check again, make sure that GDB really didn't delete the internal breakpoint.
gdb_test "maint info break $bp_num" \
"$bp_num.*$bp_addr.*" \
"maint info breakpoint \$bp_num after clear"
delete_breakpoints
gdb_py_test_silent_cmd "python wp1 = gdb.Breakpoint (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE, internal=True )" \
"Set watchpoint" 0
gdb_test "info breakpoints" \
"No breakpoints or watchpoints.*" \
"Check info breakpoints does not show invisible breakpoints"
gdb_test "maint info breakpoints" \
".*watchpoint.*result.*" \
"Check maint info breakpoints shows invisible breakpoints"
gdb_test "continue" \
".*\[Ww\]atchpoint.*result.*Old value = 0.*New value = 25.*" \
"Test watchpoint write"
}
proc_with_prefix test_bkpt_eval_funcs { } {
global srcfile testfile hex decimal
global allow_hw_watchpoint_tests_p
# Start with a fresh gdb.
clean_restart ${testfile}
# Disable hardware watchpoints if necessary.
if {!$allow_hw_watchpoint_tests_p} {
gdb_test_no_output "set can-use-hw-watchpoints 0" ""
}
if {![runto_main]} {
return 0
}
delete_breakpoints
gdb_test_multiline "Sub-class a breakpoint" \
"python" "" \
"class bp_eval (gdb.Breakpoint):" "" \
" inf_i = 0" "" \
" count = 0" "" \
" def stop (self):" "" \
" self.count = self.count + 1" "" \
" self.inf_i = gdb.parse_and_eval(\"i\")" "" \
" if self.inf_i == 3:" "" \
" return True" "" \
" return False" "" \
"end" ""
gdb_test_multiline "Sub-class a second breakpoint" \
"python" "" \
"class bp_also_eval (gdb.Breakpoint):" "" \
" count = 0" "" \
" def stop (self):" "" \
" self.count = self.count + 1" "" \
" if self.count == 9:" "" \
" return True" "" \
" return False" "" \
"end" ""
gdb_test_multiline "Sub-class a third breakpoint" \
"python" "" \
"class basic (gdb.Breakpoint):" "" \
" count = 0" "" \
"end" ""
set bp_location2 [gdb_get_line_number "Break at multiply."]
set end_location [gdb_get_line_number "Break at end."]
gdb_py_test_silent_cmd "python eval_bp1 = bp_eval(\"$bp_location2\")" \
"Set breakpoint" 0
gdb_py_test_silent_cmd "python also_eval_bp1 = bp_also_eval(\"$bp_location2\")" \
"Set breakpoint" 0
gdb_py_test_silent_cmd "python never_eval_bp1 = bp_also_eval(\"$end_location\")" \
"Set breakpoint" 0
gdb_continue_to_breakpoint "Break at multiply, i==3" \
".*$srcfile:$bp_location2.*"
gdb_test "print i" \
"3" "Check inferior value matches python accounting"
gdb_test "python print (eval_bp1.inf_i)" \
"3" "Check python accounting matches inferior"
gdb_test "python print (also_eval_bp1.count)" "4" \
"Check non firing same-location also_eval_bp1 function was also called at each stop."
gdb_test "python print (eval_bp1.count)" "4" \
"Check non firing same-location eval_bp1 function was also called at each stop."
delete_breakpoints
set cond_bp [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd "python eval_bp1 = bp_eval(\"$cond_bp\")" \
"Set breakpoint" 0
set test_cond {cond $bpnum}
gdb_test "$test_cond \"foo==3\"" \
"Only one stop condition allowed. There is currently a Python.*" \
"Check you cannot add a CLI condition to a Python breakpoint that has defined stop"
gdb_py_test_silent_cmd "python eval_bp2 = basic(\"$cond_bp\")" \
"Set breakpoint" 0
gdb_py_test_silent_cmd "python eval_bp2.condition = \"1==1\"" \
"Set a condition" 0
gdb_test_multiline "Construct an eval function" \
"python" "" \
"def stop_func ():" "" \
" return True" "" \
"end" ""
gdb_test "python eval_bp2.stop = stop_func" \
"RuntimeError: Only one stop condition allowed. There is currently a GDB.*" \
"assign stop function to a breakpoint that has a condition"
delete_breakpoints
gdb_breakpoint [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd "python check_eval = bp_eval(\"$bp_location2\")" \
"Set breakpoint" 0
gdb_test "python print (check_eval.count)" "0" \
"Test that evaluate function has not been yet executed (ie count = 0)"
gdb_continue_to_breakpoint "Break at multiply, count==1" \
".*$srcfile:$bp_location2.*"
gdb_test "python print (check_eval.count)" "1" \
"Test that evaluate function is run when location also has normal bp"
gdb_test_multiline "Sub-class a watchpoint" \
"python" "" \
"class wp_eval (gdb.Breakpoint):" "" \
" def stop (self):" "" \
" self.result = gdb.parse_and_eval(\"result\")" "" \
" if self.result == 788:" "" \
" return True" "" \
" return False" "" \
"end" ""
delete_breakpoints
gdb_py_test_silent_cmd "python wp1 = wp_eval (\"result\", type=gdb.BP_WATCHPOINT, wp_class=gdb.WP_WRITE)" \
"Set watchpoint" 0
gdb_test "continue" \
".*\[Ww\]atchpoint.*result.*Old value =.*New value = 788.*" \
"Test watchpoint write"
gdb_test "python print (never_eval_bp1.count)" "0" \
"Check that this unrelated breakpoints eval function was never called."
}
proc_with_prefix test_bkpt_temporary { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
delete_breakpoints
gdb_test_multiline "Sub-class and check temporary breakpoint" \
"python" "" \
"class temp_bp (gdb.Breakpoint):" "" \
" count = 0" "" \
" def stop (self):" "" \
" self.count = self.count + 1" "" \
" return True" "" \
"end" ""
set ibp_location [gdb_get_line_number "Break at multiply."]
gdb_py_test_silent_cmd "python ibp = temp_bp(\"$ibp_location\", temporary=True)" \
"Set temporary breakpoint" 0
gdb_test "info breakpoints" \
"2.*breakpoint.*del.*py-breakpoint\.c:$ibp_location.*" \
"Check info breakpoints shows breakpoint with temporary status"
gdb_test "python print (ibp.location)" "py-breakpoint\.c:$ibp_location*" \
"Check temporary breakpoint location"
gdb_test "python print (ibp.temporary)" "True" \
"Check breakpoint temporary status"
gdb_continue_to_breakpoint "Break at multiply." \
".*$srcfile:$ibp_location.*"
gdb_test "python print (ibp.count)" "1" \
"Check temporary stop callback executed before deletion."
gdb_test "python print (ibp.temporary)" "RuntimeError: Breakpoint 2 is invalid.*" \
"Check temporary breakpoint is deleted after being hit"
gdb_test "info breakpoints" "No breakpoints or watchpoints.*" \
"Check info breakpoints shows temporary breakpoint is deleted"
}
# Test address locations.
proc_with_prefix test_bkpt_address {} {
global gdb_prompt decimal srcfile
# Delete all breakpoints
delete_breakpoints
gdb_test "python gdb.Breakpoint(\"*main\")" \
".*Breakpoint ($decimal)+ at .*$srcfile, line ($decimal)+\."
gdb_py_test_silent_cmd \
"python main_loc = gdb.parse_and_eval(\"main\").address" \
"eval address of main" 0
# Python 2 vs 3 ... Check `int' first. If that fails, try `long'.
gdb_test_multiple "python main_addr = int(main_loc)" "int value of main" {
-re "Traceback.*$gdb_prompt $" {
gdb_test_no_output "python main_addr = long(main_loc)" \
"long value of main"
}
-re "$gdb_prompt $" {
pass "int value of main"
}
}
# Include whitespace in the linespec to double-check proper
# grokking of argument to gdb.Breakpoint.
gdb_test "python gdb.Breakpoint(\" *{}\".format(str(main_addr)))" \
".*Breakpoint ($decimal)+ at .*$srcfile, line ($decimal)+\."
}
proc_with_prefix test_bkpt_pending {} {
delete_breakpoints
gdb_breakpoint "nosuchfunction" allow-pending
gdb_test "python print (gdb.breakpoints()\[0\].pending)" "True" \
"Check pending status of pending breakpoint"
}
# Helper proc to install an event listener for a given breakpoint
# event. NAME is the name of the event to listen for.
proc connect_event {name} {
set lambda "lambda x: note_event(\"$name\")"
gdb_test_no_output "python gdb.events.$name.connect($lambda)" \
"install $name event listener"
}
# Helper proc to check that the most recently emitted breakpoint event
# is EXPECTED.
proc check_last_event {expected} {
gdb_test "python print (last_bp_event)" $expected \
"check for $expected event"
}
proc_with_prefix test_bkpt_events {} {
global testfile
clean_restart ${testfile}
gdb_test_multiline "Create event handler" \
"python" "" \
"def note_event(arg):" "" \
" global last_bp_event" "" \
" last_bp_event = arg" "" \
"end" ""
gdb_test_no_output "python last_bp_event = None"
connect_event breakpoint_created
connect_event breakpoint_modified
connect_event breakpoint_deleted
gdb_breakpoint [gdb_get_line_number "Break at add."]
check_last_event breakpoint_created
gdb_test_no_output "disable 1"
check_last_event breakpoint_modified
gdb_test_no_output "delete 1"
check_last_event breakpoint_deleted
}
proc_with_prefix test_bkpt_explicit_loc {} {
global srcfile testfile
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
delete_breakpoints
set bp_location1 [gdb_get_line_number "Break at multiply."]
set bp_location2 [gdb_get_line_number "Break at add."]
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (line=$bp_location1)" \
"set explicit breakpoint by line" 0
gdb_continue_to_breakpoint "break at multiply for explicit line" \
".*Break at multiply.*"
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (line=\"+1\")" \
"set explicit breakpoint by relative line" 0
gdb_continue_to_breakpoint "break at add for relative line" \
".*Break at add.*"
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (line=\"-1\")" \
"set explicit breakpoint by relative negative line" 0
gdb_continue_to_breakpoint "break at multiply for negative line" \
".*Break at multiply.*"
delete_breakpoints
gdb_test "python bp1 = gdb.Breakpoint (line=bp1)" \
"RuntimeError: Line keyword should be an integer or a string.*" \
"set explicit breakpoint by invalid line type"
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (function=\"add\")" \
"set explicit breakpoint by function" 0
gdb_continue_to_breakpoint "break at function add for function" \
".*Break at function add.*"
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (source=\"$srcfile\", function=\"add\")" \
"set explicit breakpoint by source file and function" 0
gdb_continue_to_breakpoint "break at function add for source and function" \
".*Break at function add.*"
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (source=\"$srcfile\", line=\"$bp_location2\")" \
"set explicit breakpoint by source file and line number" 0
gdb_continue_to_breakpoint "break at add for source and line" \
".*Break at add.*"
delete_breakpoints
gdb_py_test_silent_cmd "python bp1 = gdb.Breakpoint (\"-source $srcfile -line $bp_location2\")" \
"set explicit breakpoint by source file and line number in spec" 0
gdb_continue_to_breakpoint "break at add for source and line in spec" \
".*Break at add.*"
delete_breakpoints
gdb_test "python bp1 = gdb.Breakpoint (source=\"$srcfile\")" \
"RuntimeError: Specifying a source must also include a line, label or function.*" \
"set invalid explicit breakpoint by source only"
gdb_test "python bp1 = gdb.Breakpoint (source=\"foo.c\", line=\"5\")" \
"No source file named foo.*" \
"set invalid explicit breakpoint by missing source and line"
gdb_test "python bp1 = gdb.Breakpoint (source=\"$srcfile\", line=\"900\")" \
"No line 900 in file \"$srcfile\".*" \
"set invalid explicit breakpoint by source and invalid line"
gdb_test "python bp1 = gdb.Breakpoint (function=\"blah\")" \
"Function \"blah\" not defined.*" \
"set invalid explicit breakpoint by missing function"
delete_breakpoints
gdb_test "catch throw" "Catchpoint .* \\(throw\\)"
gdb_test "python print (gdb.breakpoints())" \
"\(\)" \
"catch throw is not a breakpoint"
}
proc_with_prefix test_bkpt_qualified {} {
global decimal hex testfile
# Start with a fresh gdb.
clean_restart ${testfile}
set one_location_re "Breakpoint $decimal at $hex:.*line $decimal."
set two_location_re "Breakpoint $decimal at $hex:.*2 locations."
if {![runto_main]} {
return 0
}
# Test the default value of "qualified".
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"multiply\")" \
$two_location_re \
"qualified implicitly false"
# Test qualified=False.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"multiply\", qualified=False)" \
$two_location_re \
"qualified false"
# Test qualified=True.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"multiply\", qualified=True)" \
$one_location_re \
"qualified true"
# Test qualified=True with an explicit function.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(function=\"multiply\", qualified=True)" \
$one_location_re \
"qualified true and explicit"
# Test qualified=False with an explicit function.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(function=\"multiply\", qualified=False)" \
$two_location_re \
"qualified false and explicit"
# Test -q in the spec string.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"-q multiply\")" \
$one_location_re \
"-q in spec string"
# Test -q in the spec string with explicit location.
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"-q -function multiply\")" \
$one_location_re \
"-q in spec string with explicit location"
# Test -q in the spec string and qualified=False (-q should win).
delete_breakpoints
gdb_test \
"python gdb.Breakpoint(\"-q multiply\", qualified=False)" \
$one_location_re \
"-q in spec string and qualified false"
}
proc_with_prefix test_bkpt_probe {} {
global decimal hex testfile srcfile
if { [prepare_for_testing "failed to prepare" ${testfile}-probes \
${srcfile} {debug c++ additional_flags=-DUSE_PROBES}] } {
return -1
}
if {![runto_main]} {
return 0
}
gdb_test \
"python gdb.Breakpoint(\"-probe test:result_updated\")" \
"Breakpoint $decimal at $hex" \
"-probe in spec string"
}
proc_with_prefix test_catchpoints {} {
global srcfile testfile
global gdb_prompt decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
# Try to create a catchpoint, currently this isn't supported via
# the python api.
gdb_test "python gdb.Breakpoint (\"syscall\", type=gdb.BP_CATCHPOINT)" \
[multi_line \
"gdb.error: BP_CATCHPOINT not supported" \
"Error while executing Python code\\."] \
"create a catchpoint via the api"
# Setup a catchpoint.
set num "XXX"
gdb_test_multiple "catch throw" "" {
-re "The feature \'catch throw\' is not supported.*\r\n$gdb_prompt $" {
unsupported "catch syscall isn't supported"
return -1
}
-re "Catchpoint ($decimal) \\(throw\\)\r\n$gdb_prompt $" {
set num $expect_out(1,string)
pass $gdb_test_name
}
}
# Look for the catchpoint in the breakpoint list.
gdb_test_multiline "scan breakpoint list for BP_CATCHPOINT" \
"python" "" \
"def scan_bp_list ():" "" \
" for b in gdb.breakpoints():" "" \
" if b.type == gdb.BP_CATCHPOINT:" "" \
" print(\"breakpoint #%d, type BP_CATCHPOINT\" % b.number)" "" \
"end" ""
gdb_test "python scan_bp_list ()" \
"breakpoint #${num}, type BP_CATCHPOINT" \
"scan breakpoint for BP_CATCHPOINT"
# Arrange to print something when GDB stops, then continue to the
# catchpoint and check we get the expected event.
gdb_test_multiline "setup stop event handler" \
"python" "" \
"def stop_handler (event):" "" \
" if (isinstance (event, gdb.BreakpointEvent)" "" \
" and isinstance (event.breakpoint, gdb.Breakpoint)" "" \
" and event.breakpoint.type == gdb.BP_CATCHPOINT):" "" \
" print (\"Stopped at catchpoint event: %d\" % event.breakpoint.number)" "" \
"end" "" \
"python gdb.events.stop.connect (stop_handler)" ""
gdb_test "continue" "Stopped at catchpoint event: ${num}"
}
# Test auto-disable is effective when notifying breakpoint_modified.
proc_with_prefix test_bkpt_auto_disable { } {
global srcfile testfile hex decimal
# Start with a fresh gdb.
clean_restart ${testfile}
if {![runto_main]} {
return 0
}
delete_breakpoints
set mult_line [gdb_get_line_number "Break at multiply."]
gdb_breakpoint ${mult_line}
gdb_test_no_output "enable count 1 2" "one shot enable"
# Python 2 doesn't support print in lambda function, so use a named
# function instead.
gdb_test_multiline "Define print_bp_enabled" \
"python" "" \
"def print_bp_enabled (bp):" "" \
" print (bp.enabled)" "" \
"end" ""
gdb_test_no_output \
"python gdb.events.breakpoint_modified.connect(print_bp_enabled)" \
"trap breakpoint_modified event"
gdb_test "continue" "False.*" "auto-disabling after enable count reached"
}
test_bkpt_basic
test_bkpt_deletion
test_bkpt_cond_and_cmds
test_bkpt_invisible
test_hardware_breakpoints
test_catchpoints
test_watchpoints
test_bkpt_internal
test_bkpt_eval_funcs
test_bkpt_temporary
test_bkpt_address
test_bkpt_pending
test_bkpt_events
test_bkpt_explicit_loc
test_bkpt_qualified
test_bkpt_probe
test_bkpt_auto_disable
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