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# Copyright 2021-2025 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/>.
# Test GDB's early init file mechanism.
# Test assumes host == build.
require {!is_remote host}
standard_testfile
# Compile the test executable.
if {[build_executable "failed to build" $testfile $srcfile]} {
return -1
}
set custom_signal_handle_re \
"warning: Found custom handler for signal $decimal \(\[^\r\n\]+\) preinstalled\."
set signal_dispositions_re \
[multi_line \
"Some signal dispositions inherited from the environment \(\[^\r\n\]+\)" \
"won't be propagated to spawned programs\." ]
set gdb_sanitizer_msg_re \
[multi_line \
"($custom_signal_handle_re" \
")+$signal_dispositions_re" \
""]
# Start gdb and ensure that the initial version string is styled in
# STYLE, use MESSAGE as the name of the test.
proc check_gdb_startup_version_string { style { message "" } } {
global gdb_sanitizer_msg_re
if { $message == "" } {
set message "check startup version string has style $style"
}
gdb_exit
gdb_spawn
set vers [style "GNU gdb.*" $style]
gdb_test "" "^(${gdb_sanitizer_msg_re})?${vers}.*" $message
}
# Return a list containing two directory paths for newly created home
# directories.
#
# The first directory is a HOME style home directory, it contains a
# .gdbearlyinit file containing CONTENT.
#
# The second directory is an XDG_CONFIG_HOME style home directory, it
# contains a sub-directory gdb/, inside which is a file gdbearlyinit
# that also contains CONTENT.
#
# The PREFIX is used in both directory names and should be unique for
# each call to this function.
proc setup_home_directories { prefix content } {
set home_dir [standard_output_file "${prefix}-home"]
set xdg_home_dir [standard_output_file "${prefix}-xdg"]
file mkdir $home_dir
file mkdir "$xdg_home_dir/gdb"
# Write the content into the HOME directory.
set fd [open "$home_dir/.gdbearlyinit" w]
puts $fd $content
close $fd
# Copy this from the HOME directory into the XDG_CONFIG_HOME
# directory.
file copy -force "$home_dir/.gdbearlyinit" "$xdg_home_dir/gdb/gdbearlyinit"
return [list $home_dir $xdg_home_dir]
}
# Restart GDB and ensure that there's no license text, we should just
# drop straight to the prompt.
proc check_gdb_startups_up_quietly { message } {
global gdb_prompt
global gdb_sanitizer_msg_re
gdb_exit
gdb_spawn
gdb_test_multiple "" $message {
-re "^(${gdb_sanitizer_msg_re})?$gdb_prompt $" {
pass $gdb_test_name
}
}
}
# Restart GDB and check that the size of the thread pool has not been
# adjusted to match the number of machine cores at early init time.
proc check_gdb_maint_show { message } {
global gdb_prompt
global gdb_sanitizer_msg_re
gdb_exit
gdb_spawn
set setshowprefix "The number of worker threads GDB can use is"
set unset "$setshowprefix the default \\\(currently 0\\\)."
set final "$setshowprefix 1."
# Output when CXX_STD_THREAD is undefined.
set off "$setshowprefix 0."
gdb_test_multiple "" $message {
-re "^(${gdb_sanitizer_msg_re})?($unset|$off)\r\n($final|$off)\r\n$gdb_prompt $" {
pass $gdb_test_name
}
}
}
with_ansi_styling_terminal {
# Start GDB and confirm that the version string is styled.
save_vars { INTERNAL_GDBFLAGS env(HOME) env(XDG_CONFIG_HOME) } {
set INTERNAL_GDBFLAGS [string map {"-q" ""} $INTERNAL_GDBFLAGS]
check_gdb_startup_version_string version
}
# Create an empty directory we can use as HOME for some of the
# tests below. When we set XDG_CONFIG_HOME we still need to point
# HOME at something otherwise GDB complains that it doesn't know
# where to create the index cache.
set empty_home_dir [standard_output_file fake-empty-home]
# Create two directories to use for the style setting test.
set dirs [setup_home_directories "style" \
[multi_line_input \
"set style version foreground none" \
"set style version background none" \
"set style version intensity normal"]]
set home_dir [lindex $dirs 0]
set xdg_home_dir [lindex $dirs 1]
# Now arrange to use the fake home directory early init file.
save_vars { INTERNAL_GDBFLAGS env(HOME) env(XDG_CONFIG_HOME) } {
set INTERNAL_GDBFLAGS [string map {"-nx" "" "-q" ""} $INTERNAL_GDBFLAGS]
# Now test GDB when using the HOME directory.
set env(HOME) $home_dir
unset -nocomplain env(XDG_CONFIG_HOME)
check_gdb_startup_version_string none \
"check version string is unstyled using HOME"
# Now test using the XDG_CONFIG_HOME folder. We still need to
# have a HOME directory set otherwise GDB will issue an error
# about not knowing where to place the index cache.
set env(XDG_CONFIG_HOME) $xdg_home_dir
set env(HOME) $empty_home_dir
check_gdb_startup_version_string none \
"check version string is unstyled using XDG_CONFIG_HOME"
}
# Create two directories to use for the quiet startup test.
set dirs [setup_home_directories "quiet" "set startup-quietly on"]
set home_dir [lindex $dirs 0]
set xdg_home_dir [lindex $dirs 1]
# Now arrange to use the fake home directory startup file.
save_vars { INTERNAL_GDBFLAGS env(HOME) env(XDG_CONFIG_HOME) } {
set INTERNAL_GDBFLAGS [string map {"-nx" "" "-q" ""} $INTERNAL_GDBFLAGS]
# Now test GDB when using the HOME directory.
set env(HOME) $home_dir
unset -nocomplain env(XDG_CONFIG_HOME)
check_gdb_startups_up_quietly \
"check GDB starts quietly using HOME"
# Now test using the XDG_CONFIG_HOME folder. We still need to
# have a HOME directory set otherwise GDB will issue an error
# about not knowing where to place the index cache.
set env(XDG_CONFIG_HOME) $xdg_home_dir
set env(HOME) $empty_home_dir
check_gdb_startups_up_quietly \
"check GDB starts quietly using XDG_CONFIG_HOME"
}
# Create fake home directory for the thread pool size check.
set dirs [setup_home_directories "maint-show" \
[multi_line_input \
"set startup-quietly on" \
"maint show worker-threads" \
"maint set worker-threads 1" \
"maint show worker-threads"]]
set home_dir [lindex $dirs 0]
# Now arrange to use the fake home directory startup file.
save_vars { INTERNAL_GDBFLAGS env(HOME) env(XDG_CONFIG_HOME) } {
set INTERNAL_GDBFLAGS [string map {"-nx" "" "-q" ""} $INTERNAL_GDBFLAGS]
# Now test GDB when using the HOME directory.
set env(HOME) $home_dir
unset -nocomplain env(XDG_CONFIG_HOME)
check_gdb_maint_show \
"check early init of thread pool size"
}
}
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