gdb/testsuite/gdb.server/no-thread-db.exp

# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2012-2021 Free Software Foundation, Inc.
#
# Contributed by Intel Corporation.
#
# 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 gdbserver to handle qGetTLSAddr requests gracefully in case
# libthread_db could not be loaded.

load_lib gdbserver-support.exp

standard_testfile
set unresolvable_thread_db_path "/foo/bar"

if {[skip_gdbserver_tests]} {
    return 0
}

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

save_vars { GDBFLAGS } {
    # If GDB and GDBserver are both running locally, set the sysroot to avoid
    # reading files via the remote protocol.
    if { ![is_remote host] && ![is_remote target] } {
	set GDBFLAGS "$GDBFLAGS -ex \"set sysroot\""
    }

    clean_restart ${testfile}
}

# Make sure we're disconnected, in case we're testing with an
# extended-remote board, therefore already connected.
gdb_test "disconnect" ".*"

gdbserver_run ""

# Force gdbserver to fail to load libthread_db.
gdb_test "monitor set libthread-db-search-path ${unresolvable_thread_db_path}" \
    "libthread-db-search-path set to `${unresolvable_thread_db_path}'" \
    "libthread-db is now unresolvable"

# Continue past tls assignment to make sure tls storage is allocated.
gdb_breakpoint ${srcfile}:[gdb_get_line_number "after tls assignment"]
gdb_continue_to_breakpoint "after tls assignment"

# Printing a tls variable should fail gracefully without a libthread_db.
gdb_test "print foo" \
    "Cannot find thread-local storage for Thread \[^,\]+, executable file ${binfile}:\[\r\n\]+Remote target failed to process qGetTLSAddr request"