gdb/testsuite/gdb.base/random-signal.exp

# Copyright 2013-2021 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/>.

if [target_info exists gdb,nosignals] {
    verbose "Skipping catch-signal.exp because of nosignals."
    continue
}

# This test requires sending ^C to interrupt the running target.
if [target_info exists gdb,nointerrupts] {
    verbose "Skipping random-signal.exp because of nointerrupts."
    return
}

standard_testfile

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

# Set a software watchpoint, continue, wait a bit and stop the target
# with ctrl-c.  A software watchpoint forces the target to
# single-step.
proc do_test {} {
    global binfile

    gdb_test_no_output "set can-use-hw-watchpoints 0"
    gdb_test "watch v" "Watchpoint .*"
    gdb_test_multiple "continue" "continue" {
	-re "Continuing" {
	    pass "continue"
	}
    }

    # For this to work we must be sure to consume the "Continuing."
    # message first, or GDB's signal handler may not be in place.
    after 500 {send_gdb "\003"}
    gdb_test "" "Program received signal SIGINT.*" "stop with control-c"
}

# With native debugging and "run" (with job control), the ctrl-c
# always reaches the inferior, not gdb, even if ctrl-c is pressed
# while gdb is processing the internal software watchtpoint
# single-step.  With remote debugging, the ctrl-c reaches GDB first.
with_test_prefix "run" {
    clean_restart $binfile

    if {![runto_main]} {
	return -1
    }

    do_test
}

# With "attach" however, even with native debugging, the ctrl-c always
# reaches GDB first.  Test that as well.
with_test_prefix "attach" {
    if {[can_spawn_for_attach]} {
	clean_restart $binfile

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

	gdb_test "attach $testpid" "Attaching to.*process $testpid.*libc.*" "attach"

	do_test

	kill_wait_spawned_process $test_spawn_id
    }
}