Comments (7)
dmah42
commented on May 5, 2024
I think this means that our test for regex is failing with zero-as-a-null-pointer-constant. Could you attach the CMakeOutput.log and CMakeError.log files please?
from benchmark.
Gluttton
commented on May 5, 2024
I think this means that our test for regex is failing with zero-as-a-null-pointer-constant.
Yes, you are right. It' caused because before launch test for regex CMAKE_CXX_FLAGS from the top project and from the benchmark project had had merged, as result test launched with combinations of flags -Wzero-as-a-null-pointer-constant -Werror. This error can be avoided by just changing sequence of directives in the top CMakeLists.txt, but this isn't obvious solution for users.
cmake_minimum_required (VERSION 2.8)
project (MasterProject)
add_subdirectory (externals/benchmark)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wzero-as-null-pointer-constant")
add_subdirectory (src)
add_subdirectory (externals/gmock)
Another question is this expected behaviour or some kind of error. As far as intention of test for regex is realizing of support of regex but not compile piece of code, in my opinion this is some kind of error. I believe that it would be better if in the benchmark project -Werror flag added after processing tests.
Could you attach the CMakeOutput.log and CMakeError.log files please?
CMakeError.log:
Determining if the pthread_create exist failed with the following output:
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make[1]: Leaving directory `/home/gluttton/benchmark/build/CMakeFiles/CMakeTmp'
make: *** [cmTryCompileExec3953001650/fast] Error 2
File /home/gluttton/benchmark/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
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Change Dir: /home/gluttton/benchmark/build/CMakeFiles/CMakeTmp
Run Build Command:/usr/bin/make "cmTryCompileExec2307068490/fast"
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Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "a.out"
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/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec3438811830.dir/link.txt --verbose=1
/usr/bin/c++ -Wzero-as-null-pointer-constant --std=c++11 -Wall -Wshadow -Werror -DHAVE_PEDANTIC_ERRORS CMakeFiles/cmTryCompileExec3438811830.dir/src.cxx.o -o cmTryCompileExec3438811830 -rdynamic
make[1]: Leaving directory `/home/gluttton/benchmark/build/CMakeFiles/CMakeTmp'
Source file was:
int main() { return 0;}
Performing C++ SOURCE FILE Test HAVE_FNO_STRICT_ALIASING succeded with the following output:
Change Dir: /home/gluttton/benchmark/build/CMakeFiles/CMakeTmp
Run Build Command:/usr/bin/make "cmTryCompileExec2091003888/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec2091003888.dir/build.make CMakeFiles/cmTryCompileExec2091003888.dir/build
make[1]: Entering directory `/home/gluttton/benchmark/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/gluttton/benchmark/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building CXX object CMakeFiles/cmTryCompileExec2091003888.dir/src.cxx.o
/usr/bin/c++ -Wzero-as-null-pointer-constant --std=c++11 -Wall -Wshadow -Werror -pedantic-errors -DHAVE_FNO_STRICT_ALIASING -fno-strict-aliasing -o CMakeFiles/cmTryCompileExec2091003888.dir/src.cxx.o -c /home/gluttton/benchmark/build/CMakeFiles/CMakeTmp/src.cxx
Linking CXX executable cmTryCompileExec2091003888
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTryCompileExec2091003888.dir/link.txt --verbose=1
/usr/bin/c++ -Wzero-as-null-pointer-constant --std=c++11 -Wall -Wshadow -Werror -pedantic-errors -DHAVE_FNO_STRICT_ALIASING CMakeFiles/cmTryCompileExec2091003888.dir/src.cxx.o -o cmTryCompileExec2091003888 -rdynamic
make[1]: Leaving directory `/home/gluttton/benchmark/build/CMakeFiles/CMakeTmp'
Source file was:
int main() { return 0;}
from benchmark.
dmah42
commented on May 5, 2024
We have to compile the code to test for support. We could add the warning and fix the test to compile successfully under that warning too.
from benchmark.
dmah42
commented on May 5, 2024
I just tested this and the tests pass with that warning flag enabled, so something else is going on.
from benchmark.
dmah42
commented on May 5, 2024
and i reproduced it now.. using g++-4.8.
from benchmark.
dmah42
commented on May 5, 2024
adding more details to the cxx feature check:
-- Version: 0.0.0
-- Performing Test HAVE_STD_REGEX
-- Performing Test HAVE_STD_REGEX -- compiled but failed to run
-- Performing Test HAVE_GNU_POSIX_REGEX
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- failed to compile
from benchmark.
Gluttton
commented on May 5, 2024
We have to compile the code to test for support.
You try to realise this with answer the question:
Can be some piece of code compiled without warnings?
In my opinion this is wrong, and the right way to realise this with answer the question:
Can be some piece of code compiled?
I just tested this and the tests pass with that warning flag enabled, so something else is going on.
I don't have big expirience with CMake but in my opinion all what you need is just put: add_cxx_compiler_flag(-Werror) in the: CMakeLists.txt after: C++ feature checks block.
from benchmark.
Related Issues (20)
- [BUG] Result of run with --benchmark_list_tests=true may not show on console
- [FR] JSON AoS<->SoA redesign HOT 6
- Migrate to bzlmod HOT 9
- [BUG] 1.8.3: build fails with gcc 14.x HOT 4
- [FR] Add `CMake` option to disable `benchmark_main` target HOT 2
- [BUG] Weird behavior of bytes_per_second and items_per_second HOT 8
- [FR] cp312 release on pypi
- [BUG] Reported iterations per run when using repetitions always the same value? HOT 3
- [BUG] With NDEBUG, early-returning without SkipWithError leads to indefinite retries HOT 5
- Complexity calculation does not work for manual timing
- [FR] Reuse benchmark functions with arbitrary fixture templates
- [FR] BENCHMARK_VERSION is not set by default HOT 4
- [BUG] Iteration count in Report looks suspicious HOT 5
- [Q] Need help with understanding the results HOT 1
- [BUG] benchmark::DoNotOptimize does not prevent a reference from being optimized away. HOT 4
- [FR]disable threads for wasm? HOT 9
- [FR] Remove COMPILER_IBMXL macro for z/OS HOT 4
- [BUG] Fixture test with StrictMock crashed HOT 2
- [BUG] HOT 2
- [FR] possible to stop benchmark loop from doing a memory allocation at the end? HOT 1
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from benchmark.