Build tests/YGPersistenceTest.cpp fails with array-bounds error on GCC 16 (-O2 / -O3) due to -Werror

Tái hiện lỗi bằng bản build GCC 16 CMake sử dụng -O2 hoặc bản build Release sử dụng -O3. Bắt đầu tại tests/YGPersistenceTest.cpp, khoảng dòng 277-278, và kiểm tra test về các child vừa được shared vừa được owned; được xem là hoàn tất khi target test build thành công với -Werror và các test chạy.

Gentoo Linux use -O2 as default optimization option, there is a array-bounds error when use g++ -O2 or -O3

Step to reproduced:

export CXXFLAGS="-O2"
export CXX="g++"
cmake -B build -DBUILD_FUZZ_TESTS=OFF
cmake --build build -j1

or

export CXX="g++"
./unit_tests Release # CMAKE_BUILD_TYPE=Release will use -O3

array-bounds error log:

[ 27%] Building CXX object tests/CMakeFiles/yogatests.dir/YGPersistenceTest.cpp.o
cd /tmp/yoga/build/tests && /usr/bin/g++  -I/tmp/yoga/yoga/.. -isystem /tmp/yoga/build/_deps/googletest-src/googletest/include -isystem /tmp/yoga/build/_deps/googletest-src/googletest -O2 -fPIE -fvisibility=hidden -fno-omit-frame-pointer -fexceptions -Wall -Werror -frtti -MD -MT tests/CMakeFiles/yogatests.dir/YGPersistenceTest.cpp.o -MF CMakeFiles/yogatests.dir/YGPersistenceTest.cpp.o.d -o CMakeFiles/yogatests.dir/YGPersistenceTest.cpp.o -c /tmp/yoga/tests/YGPersistenceTest.cpp
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_tempbuf.h:61,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/memory:68,
                 from /tmp/yoga/build/_deps/googletest-src/googletest/include/gtest/gtest.h:54,
                 from /tmp/yoga/tests/YGPersistenceTest.cpp:8:
In function ‘constexpr _Tp* std::construct_at(_Tp*, _Args&& ...) [with _Tp = facebook::yoga::Node*; _Args = {facebook::yoga::Node*}]’,
    inlined from ‘static constexpr void std::allocator_traits<std::allocator<_Up> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = facebook::yoga::Node*; _Args = {facebook::yoga::Node*}; _Tp = facebook::yoga::Node*]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/alloc_traits.h:716:21,
    inlined from ‘constexpr void std::vector<_Tp, _Alloc>::_M_insert_aux(iterator, _Arg&&) [with _Arg = facebook::yoga::Node*; _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/vector.tcc:434:31,
    inlined from ‘constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::_M_insert_rval(const_iterator, value_type&&) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/vector.tcc:381:17,
    inlined from ‘constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(const_iterator, value_type&&) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_vector.h:1519:30,
    inlined from ‘virtual void YogaTest_mixed_shared_and_owned_children_Test::TestBody()’ at /tmp/yoga/tests/YGPersistenceTest.cpp:278:18:
/usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_construct.h:110:16: error: array subscript -1 is outside array bounds of ‘facebook::yoga::Node* [1152921504606846975]’ [-Werror=array-bounds=]
  110 |         return ::new(__loc) _Tp(std::forward<_Args>(__args)...);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/allocator.h:46,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/memory:67:
In member function ‘constexpr _Tp* std::__new_allocator<_Tp>::allocate(size_type, const void*) [with _Tp = facebook::yoga::Node*]’,
    inlined from ‘constexpr _Tp* std::allocator< <template-parameter-1-1> >::allocate(std::size_t) [with _Tp = facebook::yoga::Node*]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/allocator.h:206:40,
    inlined from ‘static constexpr _Tp* std::allocator_traits<std::allocator<_Up> >::allocate(allocator_type&, size_type) [with _Tp = facebook::yoga::Node*]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/alloc_traits.h:638:28,
    inlined from ‘constexpr std::_Vector_base<_Tp, _Alloc>::pointer std::_Vector_base<_Tp, _Alloc>::_M_allocate(std::size_t) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_vector.h:389:33,
    inlined from ‘constexpr void std::_Vector_base<_Tp, _Alloc>::_M_create_storage(std::size_t) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_vector.h:407:44,
    inlined from ‘constexpr std::_Vector_base<_Tp, _Alloc>::_Vector_base(std::size_t, const allocator_type&) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_vector.h:341:26,
    inlined from ‘constexpr std::vector<_Tp, _Alloc>::vector(const std::vector<_Tp, _Alloc>&) [with _Tp = facebook::yoga::Node*; _Alloc = std::allocator<facebook::yoga::Node*>]’ at /usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/stl_vector.h:623:61,
    inlined from ‘virtual void YogaTest_mixed_shared_and_owned_children_Test::TestBody()’ at /tmp/yoga/tests/YGPersistenceTest.cpp:277:64:
/usr/lib/gcc/x86_64-pc-linux-gnu/16/include/g++-v16/bits/new_allocator.h:162:75: note: at offset -8 into object of size [0, 9223372036854775800] allocated by ‘operator new’
  162 |           return static_cast<_Tp*>(_GLIBCXX_OPERATOR_NEW(__n * sizeof(_Tp)));
      |                                                                           ^
cc1plus: all warnings being treated as errors
gmake[2]: *** [tests/CMakeFiles/yogatests.dir/build.make:446: tests/CMakeFiles/yogatests.dir/YGPersistenceTest.cpp.o] Error 1
gmake[2]: Leaving directory '/tmp/yoga/build'
gmake[1]: *** [CMakeFiles/Makefile2:258: tests/CMakeFiles/yogatests.dir/all] Error 2
gmake[1]: Leaving directory '/tmp/yoga/build'
gmake: *** [Makefile:139: all] Error 2