gdb/testsuite/gdb.threads/step-over-lands-on-breakpoint.exp

# 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 when a step-over lands on a breakpoint, that breakpoint
# hit is reported.

standard_testfile
set executable ${testfile}

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

# The test proper.  DISPLACED is true if we should try with displaced
# stepping.  COMMAND is the execution command to test.
proc do_test {displaced command} {
    global executable

    with_test_prefix "displaced=$displaced: $command" {
	clean_restart $executable

	if ![runto_main] {
	    continue
	}

	gdb_test_no_output "set displaced-stepping $displaced"

	set line [gdb_get_line_number "set wait-thread breakpoint here"]
	if { ![gdb_breakpoint $line] } {
	    return
	}
	gdb_continue_to_breakpoint "run to wait-thread breakpoint"
	gdb_test "info threads" "\\\* 1 .*  2 .*" "info threads shows all threads"

	gdb_test_no_output "set scheduler-locking on"

	delete_breakpoints

	gdb_breakpoint [gdb_get_line_number "set breakpoint child here"]
	gdb_test "thread 2" "Switching to .*"
	gdb_continue_to_breakpoint "run to breakpoint in thread 2"
	gdb_test "p counter = 0" " = 0" "unbreak loop in thread 2"

	# Set a breakpoint exactly where the step-over will land.
	gdb_breakpoint [gdb_get_line_number "breakpoint after step-over here"]

	# Switch back to thread 1 and disable scheduler locking.
	gdb_test "thread 1" "Switching to .*"
	gdb_test_no_output "set scheduler-locking off"

	# Thread 2 is still stopped at a breakpoint that needs to be
	# stepped over.  However, right where the step-over lands
	# there's another breakpoint installed, which should trap and
	# be reported to the user.
	gdb_test "$command" "step-over here.*"
    }
}

foreach displaced { "off" "on" } {
    if { $displaced != "off" && ![support_displaced_stepping] } {
	continue
    }

    # Cover both stepping and non-stepping execution commands.
    foreach command { "step" "next" "continue" } {
	do_test $displaced $command
    }
}