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# Copyright 2002-2021 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
# 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 <>.
# Regression test for PR11557. Make sure we don't end up with a stale
# register cache just after resuming a thread.
if { ![support_displaced_stepping] } {
unsupported "displaced stepping"
return -1
load_lib mi-support.exp
set MIFLAGS "-i=mi"
proc mi_nonstop_resume { command test } {
if { [mi_send_resuming_command $command $test] != 0 } {
# If a resume fails, assume non-stop is broken or unsupported
# for this target. We have logged a FAIL or UNSUPPORTED; skip
# the remaining tests to limit timeouts.
return -code continue
# Start here
standard_testfile ns-stale-regcache.c
set options [list debug]
if {[gdb_compile "$srcdir/$subdir/$srcfile" \
$binfile executable $options] != "" } {
return -1
save_vars { GDBFLAGS } {
append GDBFLAGS " -ex \"set non-stop on\""
mi_clean_restart $binfile
mi_gdb_test "-gdb-set mi-async 1" ".*"
if { [mi_runto_main] < 0 } {
# Check that register and stack info don't end up stale after resuming
# a thread.
mi_nonstop_resume "exec-continue" "resume thread"
mi_gdb_test "-data-evaluate-expression \$pc" \
"\\^error,msg=\".*\"" "no stale register cache of resumed thread"
mi_gdb_test "-stack-info-frame" \
"\\^error,msg=\".*\"" "no stale frame info of resumed thread"
# Check that the thread is still running. If the above tests passed,
# we want it to be for the right reasons.
mi_check_thread_states {"running"} "main thread still running"