# Copyright (C) 2014-2021 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/>.

# Test that GDB behaves correctly when a "next" steps over a call, and
# another thread hits a breakpoint that doesn't cause a user visible
# stop (and so needs to be stepped over).  GDB used to trip on an
# invalid assertion - PR17408.

standard_testfile

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

# Test all "set scheduler-locking" variants.
foreach schedlock {"off" "step" "on" } {
    with_test_prefix "schedlock=$schedlock" {
	clean_restart $binfile

	if ![runto_main] {
	    continue
	}

	gdb_breakpoint [gdb_get_line_number "set wait-thread breakpoint here"]
	gdb_continue_to_breakpoint "run to wait-thread breakpoint"
	gdb_test "info threads" "\\\* 1 .*  2 .*" "info threads shows all threads"

	delete_breakpoints

	gdb_breakpoint [gdb_get_line_number "set breakpoint child here"]
	# Give it a condition that always fails.
	gdb_test "condition \$bpnum global_zero == 1" ".*"

	gdb_test_no_output "set scheduler-locking $schedlock"

	# While stepping over the sleep call, the other thread hits a
	# breakpoint that doesn't cause a user visible stop (and so
	# needs to be stepped over).  The next should complete as if
	# that breakpoint never triggered.
	gdb_test "next" "EXIT_SUCCESS.*" "next over function call"
    }
}