[clang-tools-extra] Add option to allow pre/post increment/decrement operator in cppcoreg… (PR #155015)

Fri Aug 22 23:38:58 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-sve-vls` running on `linaro-g3-04` while building `clang-tools-extra` at step 7 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/143/builds/10225

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 7 (ninja check 1) failure: stage 1 checked (failure)
...
[3/8] Building CXX object compiler-rt/lib/hwasan/CMakeFiles/RTHwasan_dynamic_version_script_dummy.aarch64.dir/dummy.cpp.o
[4/8] Building CXX object compiler-rt/lib/ubsan/CMakeFiles/RTUbsan_dynamic_version_script_dummy.aarch64.dir/dummy.cpp.o
[5/8] Linking CXX shared library /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/clang/22/lib/aarch64-unknown-linux-gnu/libclang_rt.ubsan_standalone.so
[6/8] Linking CXX shared library /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/clang/22/lib/aarch64-unknown-linux-gnu/libclang_rt.hwasan.so
[7/8] Linking CXX shared library /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/clang/22/lib/aarch64-unknown-linux-gnu/libclang_rt.asan.so
[8/8] Generating /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/compile_commands.json
[111/115] cd /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/runtimes/runtimes-bins && /usr/local/bin/cmake --build /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/runtimes/runtimes-bins/ --target runtimes-test-depends --config Release
[1/3] Generating Rtsan-aarch64-FileOffset64-Test
[2/3] Generating Rtsan-aarch64-Test
[3/3] Linking CXX executable flang-rt/unittests/Runtime/RuntimeTests
FAILED: flang-rt/unittests/Runtime/RuntimeTests 
: && /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/./bin/clang++ --target=aarch64-unknown-linux-gnu -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fuse-ld=lld -Wl,--color-diagnostics    -Wl,--gc-sections flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/AccessTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ArrayConstructor.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Assign.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/BufferTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/CharacterTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/CommandTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Complex.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/CrashHandlerFixture.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Derived.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Descriptor.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ExternalIOTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Format.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/InputExtensions.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Inquiry.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ListInputTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/LogicalFormatTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Matmul.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/MatmulTranspose.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/MiscIntrinsic.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Namelist.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Numeric.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/NumericalFormatTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Pointer.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Ragged.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Random.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Reduction.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/RuntimeCrashTest.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Stop.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Support.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Time.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/TemporaryStack.cpp.o flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Transformational.cpp.o -o flang-rt/unittests/Runtime/RuntimeTests  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/libLLVMSupport.a  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/libllvm_gtest_main.a  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/libllvm_gtest.a  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/clang/22/lib/aarch64-unknown-linux-gnu/libflang_rt.runtime.a  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/libLLVMSupport.a  -lrt  -ldl  -lm  /usr/lib/aarch64-linux-gnu/libz.so  /home/tcwg-buildbot/worker/clang-aarch64-sve-vls/stage1/lib/libLLVMDemangle.a  -lpthread && :
ld.lld: error: undefined symbol: testing::internal::GetBoolAssertionFailureMessage[abi:cxx11](testing::AssertionResult const&, char const*, char const*, char const*)
>>> referenced by AccessTest.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/AccessTest.cpp.o:(AccessTests_TestExists_Test::TestBody())
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(AllocatableTest_MoveAlloc_Test::TestBody())
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(AllocatableTest_MoveAlloc_Test::TestBody())
>>> referenced 338 more times

ld.lld: error: undefined symbol: llvm::Twine::str[abi:cxx11]() const
>>> referenced by AccessTest.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/AccessTest.cpp.o:(createTemporaryFile[abi:cxx11](char const*, (anonymous namespace)::AccessType const&))

ld.lld: error: undefined symbol: testing::internal::EqFailure(char const*, char const*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, bool)
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(testing::AssertionResult testing::internal::CmpHelperEQ<std::basic_string_view<char, std::char_traits<char>>, char [50]>(char const*, char const*, std::basic_string_view<char, std::char_traits<char>> const&, char const (&) [50]))
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(testing::AssertionResult testing::internal::CmpHelperEQ<unsigned long, unsigned int>(char const*, char const*, unsigned long const&, unsigned int const&))
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(testing::AssertionResult testing::internal::CmpHelperEQ<float, float>(char const*, char const*, float const&, float const&))
>>> referenced 46 more times

ld.lld: error: undefined symbol: testing::internal::PrintStringTo(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, std::ostream*)
>>> referenced by Allocatable.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/Allocatable.cpp.o:(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> testing::PrintToString<std::basic_string_view<char, std::char_traits<char>>>(std::basic_string_view<char, std::char_traits<char>> const&))
>>> referenced by ArrayConstructor.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ArrayConstructor.cpp.o:(testing::internal::MatchesRegexMatcher::DescribeTo(std::ostream*) const)
>>> referenced by ArrayConstructor.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ArrayConstructor.cpp.o:(testing::internal::MatchesRegexMatcher::DescribeNegationTo(std::ostream*) const)
>>> referenced 4 more times

ld.lld: error: undefined symbol: testing::internal::DeathTest::Create(char const*, testing::Matcher<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&>, char const*, int, testing::internal::DeathTest**)
>>> referenced by ArrayConstructor.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ArrayConstructor.cpp.o:(ArrayConstructor_CharacterRuntimeCheck_Test::TestBody())
>>> referenced by ListInputTest.cpp
>>>               flang-rt/unittests/Runtime/CMakeFiles/RuntimeTests.dir/ListInputTest.cpp.o:(InputTest_TestListInputInvalidFormatWithSingleSuccess_Test::TestBody())
>>> referenced by CommandTest.cpp

```

</details>

https://github.com/llvm/llvm-project/pull/155015