blob: 459d1866f321710a2e5c8f2b92a04d0c771c6b8e [file] [log] [blame]
# Copyright (C) 2014-2020 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 <>.
if [target_info exists gdb,nointerrupts] {
verbose "Skipping double-prompt-target-event-error.exp because of nointerrupts."
if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug] == -1} {
return -1
# Test throwing an error while GDB is handling a target event. We use
# a ctrl-c/quit in a pagination prompt to emulate an error. COMMAND
# is either "continue" or "wrapcont". The latter is a continue issued
# from a user-defined command. That exercises the case of the
# interpreter forced sync, which was the case that originally had a
# bug.
proc cancel_pagination_in_target_event { command } {
global binfile srcfile
global gdb_prompt pagination_prompt
set testline [gdb_get_line_number "after sleep"]
with_test_prefix "ctrlc target event: $command" {
clean_restart $binfile
if ![runto_main] then {
fail "can't run to main"
return 0
gdb_test "b $srcfile:$testline" \
"Breakpoint .*$srcfile, line $testline.*" \
"set breakpoint"
gdb_test_no_output "set height 2"
if { $command == "wrapcont" } {
gdb_test_multiple "define wrapcont" "define user command: wrapcont" {
-re "Type commands for definition of \"wrapcont\".\r\nEnd with a line saying just \"end\".\r\n>$" {
# Note that "Continuing." is ommitted when
# "continue" is issued from a user-defined
# command. Issue it ourselves.
gdb_test "echo Continuing\.\ncontinue\nend" "" \
"define user command: wrapcont"
# Wait for pagination prompt after the "Continuing" line,
# indicating the program was running and then stopped.
set saw_continuing 0
set test "continue to pagination"
gdb_test_multiple "$command" $test {
-re "$pagination_prompt$" {
if {$saw_continuing} {
pass $test
} else {
send_gdb "\n"
-re "Continuing" {
set saw_continuing 1
# We're now stopped in a pagination query while handling a
# target event (printing where the program stopped). Quitting
# the pagination should result in only one prompt being
# output.
send_gdb "\003p 1\n"
# Note gdb_test_multiple has a default match for the prompt,
# which issues a FAIL. Consume the first prompt.
set test "first prompt"
gdb_test_multiple "" $test {
-re "$gdb_prompt" {
pass "first prompt"
# We should only see one prompt more, and it should be
# preceeded by print's output.
set test "no double prompt"
gdb_test_multiple "" $test {
-re "$gdb_prompt.*$gdb_prompt $" {
# The bug is present, and expect managed to read
# enough characters into the buffer to fill it with
# both prompts.
fail $test
-re " = 1\r\n$gdb_prompt $" {
pass $test
# In case the board file wants to send further commands.
gdb_test_no_output "set height unlimited"
foreach variant { "continue" "wrapcont" } {
cancel_pagination_in_target_event $variant