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# Copyright (C) 1997-2025 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 GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# Define g++ callbacks for dg.exp.
load_lib gcc-dg.exp
proc g++-dg-test { prog do_what extra_tool_flags } {
return [gcc-dg-test-1 g++_target_compile $prog $do_what $extra_tool_flags]
}
proc g++-dg-prune { system text } {
return [gcc-dg-prune $system $text]
}
# Return a list of -std flags to use for TEST.
proc g++-std-flags { test } {
# If the testcase specifies a standard, use that one.
# If not, run it under several standards, allowing GNU extensions
# if there's a dg-options line.
if ![search_for $test "-std=*++"] {
if [search_for $test "dg-options"] {
set std_prefix "-std=gnu++"
} else {
set std_prefix "-std=c++"
}
set low 0
# Some directories expect certain minimums.
if { [string match "*/coroutines/*" $test] } { set low 20 }
if { [string match "*/modules/*" $test] } { set low 17 }
# See g++.exp for the initial value of this list.
global gpp_std_list
if { [llength $gpp_std_list] > 0 } {
set std_list {}
foreach ver $gpp_std_list {
set cmpver $ver
if { $ver == 98 } { set cmpver 03 }
if { $ver ni $std_list
&& $cmpver >= $low } {
lappend std_list $ver
}
}
} else {
# If the test mentions specific C++ versions, test those.
set lines [get_matching_lines $test {\{ dg* c++[0-9][0-9]}]
set std_list {}
foreach line $lines {
regexp {c\+\+([0-9][0-9])} $line -> ver
lappend std_list $ver
if { $ver == 98 } {
# Leave low alone.
} elseif { [regexp {dg-do|dg-require-effective-target} $line] } {
set low $ver
}
}
#verbose "low: $low" 1
set std_list [lsort -unique $std_list]
# If fewer than 3 specific versions are mentioned, add more.
# The order of this list is significant: first $cxx_default,
# then the oldest and newest, then others in rough order of
# importance based on test coverage and usage.
foreach ver { 17 98 26 11 20 14 23 } {
set cmpver $ver
if { $ver == 98 } { set cmpver 03 }
if { [llength $std_list] < 3
&& $ver ni $std_list
&& $cmpver >= $low } {
lappend std_list $ver
}
}
verbose "std_list: $std_list" 1
}
set option_list { }
foreach x $std_list {
if { $x eq "impcx" } then { set x "26 -fimplicit-constexpr" }
lappend option_list "${std_prefix}$x"
}
} else {
set option_list { "" }
}
return $option_list
}
# Modified dg-runtest that runs tests in multiple standard modes,
# unless they specifically specify one standard.
proc g++-dg-runtest { testcases flags default-extra-flags } {
global runtests
foreach test $testcases {
# If we're only testing specific files and this isn't one of them, skip it.
if ![runtest_file_p $runtests $test] {
continue
}
set option_list [g++-std-flags $test]
set nshort [file tail [file dirname $test]]/[file tail $test]
foreach flags_t $option_list {
verbose "Testing $nshort, $flags $flags_t" 1
dg-test $test "$flags $flags_t" ${default-extra-flags}
}
}
}
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