gdb/testsuite/gdb.base/new-ui-pending-input.exp

# Copyright 2016-2021 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 'gdb "-ex new-ui TTY" -ex "start"' (or any other synchronous
# execution command), when TTY already has input pending.  GDB used to
# internal error in this situation.

standard_testfile

set compile_options "debug"
if {[build_executable $testfile.exp $testfile ${srcfile} ${compile_options}] == -1} {
    untested "failed to compile"
    return -1
}

# See intro.

proc test_command_line_new_ui_pending_input {} {
    global gdb_prompt
    global binfile

    # This test requires running a synchronous execution command from
    # the command line.
    if {[use_gdb_stub] || [target_info gdb_protocol] == "extended-remote" } {
	unsupported "can't run from the command line"
	return 0
    }

    spawn -pty
    set extra_spawn_id $spawn_id
    set extra_tty_name $spawn_out(slave,name)

    # An arbitrary number of prints.
    set nprints 3

    # Queue a few commands before GDB is started.
    with_spawn_id $extra_spawn_id {
	for {set i 1} {$i <= $nprints} {incr i} {
	    send_gdb "print $i\n"
	}
    }
    pass "commands pending"

    # Now spawn GDB, creating a new-ui and at the same time running a
    # synchronous command.
    set test "spawn gdb"

    set bpline [gdb_get_line_number "set breakpoint here"]

    set options ""
    append options " -iex \"set height 0\""
    append options " -iex \"set width 0\""
    append options " -iex \"new-ui console $extra_tty_name\""
    append options " -ex \"b $bpline\""
    append options " -ex \"run\""

    if {[gdb_spawn_with_cmdline_opts "$options $binfile"] != 0} {
	fail $test
	return
    } else {
	pass $test
    }

    # Consume the initial prompt on the extra console.
    with_spawn_id $extra_spawn_id {
	set test "initial prompt on extra console"
	gdb_test_multiple "" $test {
	    -re "\r\nprint 3\r\n$gdb_prompt " {
		pass $test
	    }
	}
    }

    # Check that we see the result of the print commands in the extra
    # UI.
    with_spawn_id $extra_spawn_id {
	for {set i 1} {$i <= $nprints} {incr i} {
	    set test "print $i on extra console"
	    gdb_test_multiple "" $test {
		-re " = $i\r\n$gdb_prompt " {
		    pass "$test"
		}
	    }
	}
    }

    # Now check that we reach the breakpoint successfully.
    set test "run to breakpoint on main console"
    gdb_test_multiple "" $test {
	-re "Breakpoint .* main .*set breakpoint here.*$gdb_prompt $" {
	    pass $test
	}
    }

    # And likewise on the extra console.  No prompt is expected.
    with_spawn_id $extra_spawn_id {
	set test "run to breakpoint on extra console"
	gdb_test_multiple "" $test {
	    -re "Breakpoint .* main .*set breakpoint here" {
		pass $test
	    }
	}
    }
}

# The driver.  Calls all tests.
proc testcase_driver {} {
    test_command_line_new_ui_pending_input
}

testcase_driver