# Copyright 1997, 1999 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@prep.ai.mit.edu
if $tracelevel then {
strace $tracelevel
}
if { ![isnative] } then {
continue
}
set prms_id 0
set bug_id 0
set testfile "foll-fork"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
}
# Until "set follow-fork-mode" and "catch fork" are implemented on
# other targets...
#
if ![istarget "hppa*-hp-hpux*"] then {
continue
}
proc default_fork_parent_follow {} {
global gdb_prompt
send_gdb "show follow\n"
gdb_expect {
-re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
{pass "default show parent follow, no catchpoints"}
-re "$gdb_prompt $" {fail "default show parent follow, no catchpoints"}
timeout {fail "(timeout) default show parent follow, no catchpoints"}
}
send_gdb "next 2\n"
gdb_expect {
-re "Detaching after fork from.*$gdb_prompt $"\
{pass "default parent follow, no catchpoints"}
-re "$gdb_prompt $" {fail "default parent follow, no catchpoints"}
timeout {fail "(timeout) default parent follow, no catchpoints" }
}
# The child has been detached; allow time for any output it might
# generate to arrive, so that output doesn't get confused with
# any expected debugger output from a subsequent testpoint.
#
exec sleep 1
}
proc explicit_fork_parent_follow {} {
global gdb_prompt
send_gdb "set follow parent\n"
gdb_expect {
-re "$gdb_prompt $" {pass "set follow parent"}
timeout {fail "(timeout) set follow parent"}
}
send_gdb "show follow\n"
gdb_expect {
-re "Debugger response to a program call of fork or vfork is \"parent\"..*$gdb_prompt $"\
{pass "explicit show parent follow, no catchpoints"}
-re "$gdb_prompt $" {fail "explicit show parent follow, no catchpoints"}
timeout {fail "(timeout) explicit show parent follow, no catchpoints"}
}
send_gdb "next 2\n"
gdb_expect {
-re "Detaching after fork from.*$gdb_prompt $"\
{pass "explicit parent follow, no catchpoints"}
-re "$gdb_prompt $" {fail "explicit parent follow, no catchpoints"}
timeout {fail "(timeout) explicit parent follow, no catchpoints"}
}
# The child has been detached; allow time for any output it might
# generate to arrive, so that output doesn't get confused with
# any expected debugger output from a subsequent testpoint.
#
exec sleep 1
}
proc explicit_fork_child_follow {} {
global gdb_prompt
send_gdb "set follow child\n"
gdb_expect {
-re "$gdb_prompt $" {pass "set follow child"}
timeout {fail "(timeout) set follow child"}
}
send_gdb "show follow\n"
gdb_expect {
-re "Debugger response to a program call of fork or vfork is \"child\"..*$gdb_prompt $"\
{pass "explicit show child follow, no catchpoints"}
-re "$gdb_prompt $" {fail "explicit show child follow, no catchpoints"}
timeout {fail "(timeout) explicit show child follow, no catchpoints"}
}
send_gdb "next 2\n"
gdb_expect {
-re "Detaching from program:.*Attaching after fork to.*$gdb_prompt $"\
{pass "explicit child follow, no catchpoints"}
-re "$gdb_prompt $" {fail "explicit child follow, no catchpoints"}
timeout {fail "(timeout) explicit child follow, no catchpoints"}
}
# The child has been detached; allow time for any output it might
# generate to arrive, so that output doesn't get confused with
# any gdb_expected debugger output from a subsequent testpoint.
#
exec sleep 1
}
proc catch_fork_child_follow {} {
global gdb_prompt
send_gdb "catch fork\n"
gdb_expect {
-re "Catchpoint .*(fork).*$gdb_prompt $"\
{pass "explicit child follow, set catch fork"}
-re "$gdb_prompt $" {fail "explicit child follow, set catch fork"}
timeout {fail "(timeout) explicit child follow, set catch fork"}
}
# Verify that the catchpoint is mentioned in an "info breakpoints",
# and further that the catchpoint mentions no process id.
#
send_gdb "info breakpoints\n"
gdb_expect {
-re ".*catch fork.*keep y.*$gdb_prompt $"\
{pass "info shows catchpoint without pid"}
-re ".*catch fork.*process .*$gdb_prompt $"\
{fail "info shows catchpoint without pid"}
-re "$gdb_prompt $" {fail "info shows catchpoint without pid"}
timeout {fail "(timeout) info shows catchpoint without pid"}
}
send_gdb "continue\n"
gdb_expect {
-re "Catchpoint.*(forked process.*),.*in _fork_sys.*$gdb_prompt $"\
{pass "explicit child follow, catch fork"}
-re "$gdb_prompt $" {fail "explicit child follow, catch fork"}
timeout {fail "(timeout) explicit child follow, catch fork"}
}
# Verify that the catchpoint is mentioned in an "info breakpoints",
# and further that the catchpoint managed to capture a process id.
#
send_gdb "info breakpoints\n"
gdb_expect {
-re ".*catch fork .*process \[0-9\]+.*$gdb_prompt $"\
{pass "info shows catchpoint pid"}
-re "$gdb_prompt $" {fail "info shows catchpoint pid"}
timeout {fail "(timeout) info shows catchpoint pid"}
}
send_gdb "set follow child\n"
gdb_expect {
-re "$gdb_prompt $" {pass "set follow child"}
timeout {fail "(timeout) set follow child"}
}
send_gdb "tbreak 24\n"
gdb_expect {
-re "Breakpoint.*, line 24.*$gdb_prompt $"\
{pass "set follow child, tbreak"}
-re "$gdb_prompt $" {fail "set follow child, tbreak"}
timeout {fail "(timeout) set follow child, tbreak"}
}
send_gdb "continue\n"
gdb_expect {
-re ".*Detaching from program:.*Attaching after fork to.* at .*24.*$gdb_prompt $"\
{pass "set follow child, hit tbreak"}
-re "$gdb_prompt $" {fail "set follow child, hit tbreak"}
timeout {fail "(timeout) set follow child, hit tbreak"}
}
# The child has been detached; allow time for any output it might
# generate to arrive, so that output doesn't get confused with
# any expected debugger output from a subsequent testpoint.
#
exec sleep 1
send_gdb "delete breakpoints\n"
gdb_expect {
-re "Delete all breakpoints.*$" {
send_gdb "y\n"
gdb_expect {
-re "$gdb_prompt $"\
{pass "set follow child, cleanup"}
timeout {fail "(timeout) set follow child, cleanup"}
}
}
-re "$gdb_prompt $" {fail "set follow child, cleanup"}
timeout {fail "(timeout) set follow child, cleanup"}
}
}
proc tcatch_fork_parent_follow {} {
global gdb_prompt
send_gdb "catch fork\n"
gdb_expect {
-re "Catchpoint .*(fork).*$gdb_prompt $"\
{pass "explicit parent follow, set tcatch fork"}
-re "$gdb_prompt $" {fail "explicit parent follow, set tcatch fork"}
timeout {fail "(timeout) explicit parent follow, set tcatch fork"}
}
# ??rehrauer: I don't yet know how to get the id of the tcatch
# via this script, so that I can add a -do list to it. For now,
# do the follow stuff after the catch happens.
send_gdb "continue\n"
gdb_expect {
-re ".*in _fork_sys.*$gdb_prompt $"\
{pass "explicit parent follow, tcatch fork"}
-re "$gdb_prompt $" {fail "explicit parent follow, tcatch fork"}
timeout {fail "(timeout) explicit parent follow, tcatch fork"}
}
send_gdb "set follow parent\n"
gdb_expect {
-re "$gdb_prompt $" {pass "set follow parent"}
timeout {fail "(timeout) set follow parent"}
}
send_gdb "tbreak 24\n"
gdb_expect {
-re "Breakpoint.*, line 24.*$gdb_prompt $"\
{pass "set follow parent, tbreak"}
-re "$gdb_prompt $" {fail "set follow parent, tbreak"}
timeout {fail "(timeout) set follow child, tbreak"}
}
send_gdb "continue\n"
gdb_expect {
-re ".*Detaching after fork from.* at .*24.*$gdb_prompt $"\
{pass "set follow parent, hit tbreak"}
-re "$gdb_prompt $" {fail "set follow parent, hit tbreak"}
timeout {fail "(timeout) set follow parent, hit tbreak"}
}
# The child has been detached; allow time for any output it might
# generate to arrive, so that output doesn't get confused with
# any expected debugger output from a subsequent testpoint.
#
exec sleep 1
send_gdb "delete breakpoints\n"
gdb_expect {
-re "Delete all breakpoints.*$" {
send_gdb "y\n"
gdb_expect {
-re "$gdb_prompt $"\
{pass "set follow parent, cleanup"}
timeout {fail "(timeout) set follow parent, cleanup"}
}
}
-re "$gdb_prompt $" {fail "set follow parent, cleanup"}
timeout {fail "(timeout) set follow parent, cleanup"}
}
}
proc do_fork_tests {} {
global gdb_prompt
# Verify that help is available for "set follow-fork-mode".
#
send_gdb "help set follow-fork-mode\n"
gdb_expect {
-re "Set debugger response to a program call of fork or vfork..*
A fork or vfork creates a new process. follow-fork-mode can be:.*
.*parent - the original process is debugged after a fork.*
.*child - the new process is debugged after a fork.*
The unfollowed process will continue to run..*
By default, the debugger will follow the parent process..*$gdb_prompt $"\
{ pass "help set follow" }
-re "$gdb_prompt $" { fail "help set follow" }
timeout { fail "(timeout) help set follow" }
}
# Verify that we can set follow-fork-mode, using an abbreviation
# for both the flag and its value.
#
send_gdb "set follow ch\n"
send_gdb "show fol\n"
gdb_expect {
-re "Debugger response to a program call of fork or vfork is \"child\".*$gdb_prompt $"\
{pass "set follow, using abbreviations"}
timeout {fail "(timeout) set follow, using abbreviations"}
}
# Verify that we cannot set follow-fork-mode to nonsense.
#
send_gdb "set follow chork\n"
gdb_expect {
-re "Undefined item: \"chork\".*$gdb_prompt $"\
{pass "set follow to nonsense is prohibited"}
-re "$gdb_prompt $" {fail "set follow to nonsense is prohibited"}
timeout {fail "(timeout) set follow to nonsense is prohibited"}
}
send_gdb "set follow parent\n"
gdb_expect {
-re "$gdb_prompt $" {pass "set follow to nonsense is prohibited (reset parent)"}
timeout {fail "set follow to nonsense is prohibited (reset parent)"}
}
# Test the default behaviour, which is to follow the parent of a
# fork, and detach from the child. Do this without catchpoints.
#
if [runto_main] then { default_fork_parent_follow }
# Test the ability to explicitly follow the parent of a fork, and
# detach from the child. Do this without catchpoints.
#
if [runto_main] then { explicit_fork_parent_follow }
# Test the ability to follow the child of a fork, and detach from
# the parent. Do this without catchpoints.
#
if [runto_main] then { explicit_fork_child_follow }
# Test the ability to follow both child and parent of a fork. Do
# this without catchpoints.
# ??rehrauer: NYI. Will add testpoints here when implemented.
#
# Test the ability to have the debugger ask the user at fork-time
# whether to follow the parent, child or both. Do this without
# catchpoints.
# ??rehrauer: NYI. Will add testpoints here when implemented.
#
# Test the ability to catch a fork, specify that the child be
# followed, and continue. Make the catchpoint permanent.
#
if [runto_main] then { catch_fork_child_follow }
# Test the ability to catch a fork, specify via a -do clause that
# the parent be followed, and continue. Make the catchpoint temporary.
#
if [runto_main] then { tcatch_fork_parent_follow }
}
# Start with a fresh gdb
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
# This is a test of gdb's ability to follow the parent, child or both
# parent and child of a Unix fork() system call.
#
do_fork_tests
return 0