# Copyright 2018-2021 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/>.

# The purpose of this test is to verify that GDB is able to handle
# the "-list-thread-groups --available" command, even when there is
# no inferior. In particular, we want to verify that GDB does not
# crash.

load_lib mi-support.exp
set MIFLAGS "-i=mi"

gdb_exit
if [mi_gdb_start] {
    continue
}

# Try the "-list-thread-groups --available".  This command can generate
# a very large amount of output, potentially exceeding expect's buffer
# size.  So we consume the output in chunks.

set test "-list-thread-groups --available"
gdb_test_multiple $test $test {
    -re "\}" {
        exp_continue
    }
    -re "\r\n$gdb_prompt " {
        pass $test
    }
}

# Verify that GDB is still alive.

mi_gdb_test "-data-evaluate-expression 1" \
            ".*\\^done,value=\"1\"" \
            "GDB is still alive"