https://gcc.gnu.org/g:66ce317036f2eb5aeb96d5e4b9e468799d7566b6
commit r16-7479-g66ce317036f2eb5aeb96d5e4b9e468799d7566b6 Author: Pietro Monteiro <[email protected]> Date: Wed Feb 11 11:55:13 2026 -0500 libitm: Fix recent libitm testsuite regression [PR69018] The commit r16-7202-gb129ff0880c6d1 broke running libitm’s testsuite using combinations of options because it didn’t clean up all the global variables set in c++.exp. Fix the regression by using g++ for the C++ tests and cleaning up the variables shared between C and C++ tests. libitm/ChangeLog: PR libitm/69018 * testsuite/lib/libitm.exp (libitm_init): Check GXX_UNDER_TEST. Add "${blddir}/.libs" to always_ld_library_path if blddir is not empty. Use "-fdiagnostics-plain-output". Don't set compiler to GCC_UNDER_TEST. * testsuite/libitm.c++/c++.exp: If $blddir is not empty set libstdc++_library_path, shlib_ext, lang_include_flags, add "${blddir}/${lang_library_paths}" to ld_library_path. Unset libstdc++_library_path and shlib_ext if we skip C++ tests and at the end of the test run. * testsuite/libitm.c/c.exp: Update the FSF address to the website in the license text. Unset lang_library_paths and lang_include_flags. Set the compiler to $GCC_UNDER_TEST. Co-authored-by: Jakub Jelinek <[email protected]> Signed-off-by: Pietro Monteiro <[email protected]> Diff: --- libitm/testsuite/lib/libitm.exp | 21 +++++++++++++++---- libitm/testsuite/libitm.c++/c++.exp | 42 ++++++++++++++----------------------- libitm/testsuite/libitm.c/c.exp | 14 ++++++------- 3 files changed, 40 insertions(+), 37 deletions(-) diff --git a/libitm/testsuite/lib/libitm.exp b/libitm/testsuite/lib/libitm.exp index 69a49906d338..2de0f6cbf158 100644 --- a/libitm/testsuite/lib/libitm.exp +++ b/libitm/testsuite/lib/libitm.exp @@ -79,7 +79,7 @@ proc libitm_init { args } { global ALWAYS_CFLAGS global CFLAGS global TOOL_EXECUTABLE TOOL_OPTIONS - global GCC_UNDER_TEST + global GCC_UNDER_TEST GXX_UNDER_TEST global TESTING_IN_BUILD_TREE global target_triplet global always_ld_library_path @@ -97,6 +97,17 @@ proc libitm_init { args } { } else { set GCC_UNDER_TEST "[find_gcc]" } + # Only if we're guessing 'GCC_UNDER_TEST', we're also going to guess + # 'GXX_UNDER_TEST' + if ![info exists GXX_UNDER_TEST] then { + if [info exists TOOL_EXECUTABLE] { + set GXX_UNDER_TEST $TOOL_EXECUTABLE + } else { + set GXX_UNDER_TEST "[find_g++]" + } + } else { + error "GXX_UNDER_TEST set but not GCC_UNDER_TEST" + } } if ![info exists tmpdir] { @@ -119,7 +130,7 @@ proc libitm_init { args } { } # Compute what needs to be put into LD_LIBRARY_PATH - set always_ld_library_path ".:${blddir}/.libs" + set always_ld_library_path "." # Compute what needs to be added to the existing LD_LIBRARY_PATH. if {$gccdir != ""} { @@ -150,6 +161,8 @@ proc libitm_init { args } { lappend ALWAYS_CFLAGS "additional_flags=-B${blddir}/" lappend ALWAYS_CFLAGS "additional_flags=-I${blddir}" lappend ALWAYS_CFLAGS "ldflags=-L${blddir}/.libs" + + append always_ld_library_path ":${blddir}/.libs" } lappend ALWAYS_CFLAGS "additional_flags=-I${srcdir}/.." @@ -179,7 +192,8 @@ proc libitm_init { args } { # Turn on transactional memory support. lappend ALWAYS_CFLAGS "additional_flags=-fgnu-tm" - lappend ALWAYS_CFLAGS "additional_flags=-fdiagnostics-color=never" + # Disable caret, color, URL diagnostics + lappend ALWAYS_CFLAGS "additional_flags=-fdiagnostics-plain-output" } # @@ -220,7 +234,6 @@ proc libitm_target_compile { source dest type options } { lappend options "additional_flags=[libio_include_flags]" lappend options "timeout=[timeout_value]" - lappend options "compiler=$GCC_UNDER_TEST" set options [concat $libitm_compile_options $options] diff --git a/libitm/testsuite/libitm.c++/c++.exp b/libitm/testsuite/libitm.c++/c++.exp index 90f3058e7249..c24dc830bcc5 100644 --- a/libitm/testsuite/libitm.c++/c++.exp +++ b/libitm/testsuite/libitm.c++/c++.exp @@ -16,39 +16,33 @@ load_lib libitm-dg.exp load_gcc_lib gcc-dg.exp -global shlib_ext - -set shlib_ext [get_shlib_extension] -# The C++ tests should be linked with g++, which defaults to -shared-libgcc. -# Doing that is currently too intrusive, so hardcode here. -set lang_link_flags "-shared-libgcc -lstdc++" -set lang_test_file_found 0 -set lang_library_path "../libstdc++-v3/src/.libs" - -# Initialize dg. -dg-init - -set blddir [lookfor_file [get_multilibs] libitm] - - if { $blddir != "" } { - if { ![file exists "${blddir}/${lang_library_path}/libstdc++.a"] - && ![file exists "${blddir}/${lang_library_path}/libstdc++.${shlib_ext}"] } { + set libstdc++_library_path "../libstdc++-v3/src/.libs" + set shlib_ext [get_shlib_extension] + if { ![file exists "${blddir}/${libstdc++_library_path}/libstdc++.a"] + && ![file exists "${blddir}/${libstdc++_library_path}/libstdc++.${shlib_ext}"] } { verbose -log "No libstdc++ library found, will not execute c++ tests" - unset lang_library_path + unset libstdc++_library_path + unset shlib_ext return } - lappend lang_library_paths ${lang_library_path} + lappend lang_library_paths ${libstdc++_library_path} } elseif { ![info exists GXX_UNDER_TEST] } { verbose -log "GXX_UNDER_TEST not defined, will not execute c++ tests" return } +lappend ALWAYS_CFLAGS "compiler=$GXX_UNDER_TEST" + +# Initialize dg. +dg-init + # Gather a list of all tests. set tests [lsort [glob -nocomplain $srcdir/$subdir/*.C]] if { $blddir != "" } { - set ld_library_path "$always_ld_library_path:${blddir}/${lang_library_path}" + set lang_include_flags [exec sh ${blddir}/../libstdc++-v3/scripts/testsuite_flags --build-includes] + set ld_library_path "$always_ld_library_path:${blddir}/${lang_library_paths}" } else { set ld_library_path "$always_ld_library_path" } @@ -56,18 +50,14 @@ if { $blddir != "" } { append ld_library_path [gcc-set-multilib-library-path $GCC_UNDER_TEST] set_ld_library_path_env_vars -set flags_file "${blddir}/../libstdc++-v3/scripts/testsuite_flags" -if { [file exists $flags_file] } { - set lang_include_flags [exec sh $flags_file --build-includes] -} - # Main loop. dg-runtest $tests "" "" if { $blddir != "" } { unset lang_include_flags - unset lang_library_path + unset libstdc++_library_path unset lang_library_paths + unset shlib_ext } # All done. diff --git a/libitm/testsuite/libitm.c/c.exp b/libitm/testsuite/libitm.c/c.exp index daa71427d64c..7a697b870932 100644 --- a/libitm/testsuite/libitm.c/c.exp +++ b/libitm/testsuite/libitm.c/c.exp @@ -9,20 +9,20 @@ # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# along with this program; if not, see <http://www.gnu.org/licenses/>. -if [info exists lang_library_path] then { - unset lang_library_path - unset lang_link_flags +if [info exists lang_library_paths] then { + unset lang_library_paths } -if [info exists lang_test_file] then { - unset lang_test_file +if [info exists lang_include_flags] then { + unset lang_include_flags } load_lib libitm-dg.exp load_gcc_lib gcc-dg.exp +lappend ALWAYS_CFLAGS "compiler=$GCC_UNDER_TEST" + # If a testcase doesn't have special options, use these. if ![info exists DEFAULT_CFLAGS] then { set DEFAULT_CFLAGS "-O2"
