binutils-gdb/gdb/testsuite/gdb.threads/signal-command-handle-nopass.exp

# Copyright (C) 2014-2019 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/>.  */

# Test that an explicit "signal FOO" delivers FOO even if "handle" for
# that same signal is set to "nopass".  Also make sure the signal is
# delivered to the right thread, even if GDB has to step over a
# breakpoint in some other thread first.

if [target_info exists gdb,nosignals] {
    verbose "Skipping ${testfile}.exp because of nosignals."
    return -1
}

standard_testfile

if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
	 executable { debug }] != "" } {
    return -1
}

# Run the test proper.  STEP_OVER indicates whether we leave in place
# a breakpoint that needs to be stepped over when we explicitly
# request a signal be delivered with the "signal" command.

proc test { step_over } {
    global srcfile binfile

    with_test_prefix "step-over $step_over" {
	clean_restart ${binfile}

	if ![runto_main] then {
	    fail "can't run to main"
	    return 0
	}

	gdb_test "handle SIGUSR1 stop print nopass"

	gdb_test "b thread_function" "Breakpoint .* at .*$srcfile.*"
	gdb_test "continue" "thread_function.*" "stopped in thread"

	# Thread 2 is stopped at a breakpoint.  If we leave the
	# breakpoint in place, GDB needs to move thread 2 past the
	# breakpoint before delivering the signal to thread 1.  We
	# want to be sure that GDB doesn't mistakenly deliver the
	# signal to thread 1 while doing that.
	if { $step_over == "no" } {
	    delete_breakpoints
	}

	gdb_test "break handler" "Breakpoint .* at .*$srcfile.*"

	gdb_test "thread 1" "Switching to thread 1.*"

	set pattern "\\\* 1\[ \t\]+Thread.*"

	gdb_test "info threads" $pattern "thread 1 selected"

	gdb_test "signal SIGUSR1" "handler .*"

	# Make sure it was thread 1 that got the signal.  Note we list
	# all threads instead of just thread 1, so that if something
	# goes wrong and another thread ends up selected, we can
	# easily see which in the logs.
	gdb_test "info threads" $pattern "thread 1 got the signal"
    }
}

foreach stepover {"yes" "no"} {
    test $stepover
}