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# Copyright 2015-2017 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/>.
# This file is part of the gdb testsuite.
# Test the setting of "history size" via $HOME/.gdbinit
# This test depends on being able to set $HOME and $GDBHISTSIZE.
# We cannot expect remote hosts to see environment variables set on the
# local machine.
if { [is_remote host] } {
unsupported "can't set environment variables on remote host"
return -1
}
# Check that the history size is properly set to SIZE when reading the .gdbinit
# file located in HOME with the environment variable GDBHISTSIZE optionally
# set to GDBHISTSIZE_VAL.
proc test_gdbinit_history_setting { home size { gdbhistsize_val "-" } } {
global env
global INTERNAL_GDBFLAGS
global srcdir
global subdir
save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) env(HOME) } {
set env(HOME) "$srcdir/$subdir/$home"
# These environment variables take precedence over whatever
# history size is set in .gdbinit. Make sure the former is not
# set.
unset -nocomplain env(GDBHISTFILE)
unset -nocomplain env(GDBHISTSIZE)
if { $gdbhistsize_val != "-" } {
set env(GDBHISTSIZE) $gdbhistsize_val
}
set INTERNAL_GDBFLAGS [string map {"-nx" ""} $INTERNAL_GDBFLAGS]
set prefix "home=$home"
if { $gdbhistsize_val != "-" } {
append prefix " gdbhistsize=$gdbhistsize_val"
}
with_test_prefix $prefix {
gdb_exit
gdb_start
gdb_test "show history size" "The size of the command history is $size."
if { $size == "0" } {
gdb_test_no_output "show commands"
} elseif { $size != "1" } {
gdb_test "show commands" " . show history size\r\n . show commands"
}
}
}
}
# Check that the history file does not get truncated to zero when a gdbinit
# file sets the history size to unlimited.
proc test_no_truncation_of_unlimited_history_file { } {
global env
global INTERNAL_GDBFLAGS
save_vars { INTERNAL_GDBFLAGS env(GDBHISTFILE) env(GDBHISTSIZE) } {
# These environment variables take precedence over whatever
# history size is set in .gdbinit. Make sure the former is not
# set.
unset -nocomplain env(GDBHISTFILE)
unset -nocomplain env(GDBHISTSIZE)
set temp_gdbinit [standard_output_file "gdbinit-history.gdbinit"]
set temp_histfile [standard_output_file "gdbinit-history.gdb_history"]
file delete $temp_gdbinit
file delete $temp_histfile
set fd [open $temp_gdbinit "w"]
puts $fd "set history size unlimited\n"
puts $fd "set history filename $temp_histfile\n"
puts $fd "set history save\n"
close $fd
append INTERNAL_GDBFLAGS " -x $temp_gdbinit"
# We have to start then exit GDB twice: the first time to test the creation
# of the initial history file, and the second time to test appending to it.
# In either case the initial "print 1" command should persist through the
# history file.
with_test_prefix "truncation" {
gdb_exit
gdb_start
gdb_test "print 1"
with_test_prefix "creating" {
gdb_exit
gdb_start
gdb_test "server show commands" " . print 1.*"
}
with_test_prefix "appending" {
gdb_exit
gdb_start
gdb_test "server show commands" " . print 1.*"
}
}
}
}
test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited"
test_gdbinit_history_setting "gdbinit-history/zero" "0"
test_no_truncation_of_unlimited_history_file
# A valid GDBHISTSIZE value overrides the setting inside the .gdbinit file; an
# invalid GDBHISTSIZE value is ignored, falling back on the setting inside the
# .gdbinit file.
test_gdbinit_history_setting "gdbinit-history/unlimited" "1000" "1000"
test_gdbinit_history_setting "gdbinit-history/unlimited" "unlimited" "foo"
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