gdb/testsuite/gdb.base/watchpoint-hw-attach.exp

# Copyright 2018-2025 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,
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# watchpoint-hw-attach.exp -- Test if hardware watchpoints are used
# when attaching to a target.

require allow_hw_watchpoint_tests

require can_spawn_for_attach

standard_testfile

if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
    return -1
}

set test_spawn_id [spawn_wait_for_attach $binfile]
set testpid [spawn_id_get_pid $test_spawn_id]

gdb_test "attach $testpid" "Attaching to program: .*, process $testpid.*" "attach once"

gdb_test "detach" "Detaching from program: .*, process $testpid\r\n\\\[Inferior $decimal \\(process $testpid\\) detached\\\]"

# A clean restart is needed to force the hardware watchpoint setup
# logic to run post attach rather than post inferior launch.
clean_restart
gdb_load $binfile

gdb_test "attach $testpid" "Attaching to program: .*, process $testpid.*" "attach twice"

# Ensure the test program is in the top frame so the required
# variables are in scope.
gdb_breakpoint $srcfile:[gdb_get_line_number "pidacquired"]
gdb_continue_to_breakpoint "$srcfile:pidacquired"

gdb_test_no_output "set should_continue = 1"

gdb_test "watch watched_variable" \
	 "Hardware watchpoint $decimal: watched_variable"

gdb_test "continue" \
	 "continue.*Continuing.*\.Hardware watchpoint $decimal: watched_variable.*Old value = 0.*New value = 4.*watched_variable\\);"

kill_wait_spawned_process $test_spawn_id