Successfully identified regression in *gcc* in CI configuration tcwg_gnu/gnu-master-arm-check_gcc. So far, this commit has regressed CI configurations: - tcwg_gnu/gnu-master-arm-check_gcc
Culprit: <cut> commit 34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3 Author: Marek Polacek polacek@redhat.com Date: Tue Jul 20 16:26:28 2021 -0400
include: Fix -Wundef warnings in ansidecl.h
This quashes -Wundef warnings in ansidecl.h when compiled in C or C++. In C, __cpp_constexpr and __cplusplus aren't defined so we evaluate them to 0; conversely, __STDC_VERSION__ is not defined in C++. This has caused grief when -Wundef is used with -Werror.
I've also tested -traditional-cpp.
include/ChangeLog:
* ansidecl.h: Check if __cplusplus is defined before checking the value of __cpp_constexpr and __cplusplus. Don't check __STDC_VERSION__ in C++. </cut>
Results regressed to (for first_bad == 34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3) # reset_artifacts: -10 # build_abe binutils: -2 # build_abe gcc: -1 # build_abe dejagnu: 0 # build_abe check_gcc -- --set runtestflags=gcc.c-torture/execute/execute.exp: 1 # Getting actual results from build directory /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/libstdc++.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/gfortran.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/libitm.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/libgomp.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/libatomic.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/g++.sum # /home/tcwg-buildslave/workspace/tcwg_gnu_0/artifacts/build-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3/sumfiles/gcc.sum # Manifest: gcc-compare-results/contrib/testsuite-management/flaky/gnu-master-arm-check_gcc.xfail # Getting actual results from build directory base-artifacts/sumfiles # base-artifacts/sumfiles/libstdc++.sum # base-artifacts/sumfiles/gfortran.sum # base-artifacts/sumfiles/libitm.sum # base-artifacts/sumfiles/libgomp.sum # base-artifacts/sumfiles/libatomic.sum # base-artifacts/sumfiles/g++.sum # base-artifacts/sumfiles/gcc.sum # # # Unexpected results in this build (new failures) # === gcc tests === # # Running gcc.c-torture/execute/execute.exp ... # FAIL: gcc.c-torture/execute/20030117-1.c -Os execution test # FAIL: gcc.c-torture/execute/20031215-1.c -O1 execution test # # === Results Summary ===
from (for last_good == ead235f60139edc6eb408d8d083cbb15e417b447) # reset_artifacts: -10 # build_abe binutils: -2 # build_abe gcc: -1 # build_abe dejagnu: 0 # build_abe check_gcc -- --set runtestflags=gcc.c-torture/execute/execute.exp: 1
Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... Build top page/logs: https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/
Configuration details:
Reproduce builds: <cut> mkdir investigate-gcc-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3 cd investigate-gcc-34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3
git clone https://git.linaro.org/toolchain/jenkins-scripts
mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... --fail chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh
# Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/
cd gcc
# Reproduce first_bad build git checkout --detach 34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3 ../artifacts/test.sh
# Reproduce last_good build git checkout --detach ead235f60139edc6eb408d8d083cbb15e417b447 ../artifacts/test.sh
cd .. </cut>
History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/c...
Artifacts: https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/artifac... Build log: https://ci.linaro.org/job/tcwg_gcc-bisect-gnu-master-arm-check_gcc/2/console...
Full commit (up to 1000 lines): <cut> commit 34dbb5f346459a1b36cd0cfbfe1cf18cd099fdf3 Author: Marek Polacek polacek@redhat.com Date: Tue Jul 20 16:26:28 2021 -0400
include: Fix -Wundef warnings in ansidecl.h
This quashes -Wundef warnings in ansidecl.h when compiled in C or C++. In C, __cpp_constexpr and __cplusplus aren't defined so we evaluate them to 0; conversely, __STDC_VERSION__ is not defined in C++. This has caused grief when -Wundef is used with -Werror.
I've also tested -traditional-cpp.
include/ChangeLog:
* ansidecl.h: Check if __cplusplus is defined before checking the value of __cpp_constexpr and __cplusplus. Don't check __STDC_VERSION__ in C++. --- include/ansidecl.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/ansidecl.h b/include/ansidecl.h index 0515228f325..2efe3e85e59 100644 --- a/include/ansidecl.h +++ b/include/ansidecl.h @@ -79,7 +79,7 @@ So instead we use the macro below and test it against specific values. */ /* inline requires special treatment; it's in C99, and GCC >=2.7 supports it too, but it's not in C89. */ #undef inline -#if __STDC_VERSION__ >= 199901L || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__)) +#if (!defined(__cplusplus) && __STDC_VERSION__ >= 199901L) || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__)) /* it's a keyword */ #else # if GCC_VERSION >= 2007 @@ -356,7 +356,7 @@ So instead we use the macro below and test it against specific values. */ #define ENUM_BITFIELD(TYPE) unsigned int #endif
-#if __cpp_constexpr >= 200704 +#if defined(__cplusplus) && __cpp_constexpr >= 200704 #define CONSTEXPR constexpr #else #define CONSTEXPR @@ -419,7 +419,7 @@ So instead we use the macro below and test it against specific values. */
so that most attempts at copy are caught at compile-time. */
-#if __cplusplus >= 201103 +#if defined(__cplusplus) && __cplusplus >= 201103 #define DISABLE_COPY_AND_ASSIGN(TYPE) \ TYPE (const TYPE&) = delete; \ void operator= (const TYPE &) = delete </cut>