GCC -Wstringop-overflow on new Handler(id) when compiling the extension module (Linux, GCC 13+)

[linesight]

Building the extension module on Linux emits -Wstringop-overflow warnings, all
of the same shape. Env: CEF Python 147.0, Python 3.14, GCC 15.2.0 (Ubuntu), CMake
build with -O3 -flto.

/usr/include/c++/15/bits/atomic_base.h:631:34: warning: ‘__atomic_fetch_add_4’ writing 4 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=]
  631 |       { return __atomic_fetch_add(&_M_i, __i, int(__m)); }
      |                                  ^
pyx_stage/cefpython_py314.cpp: In function ‘__pyx_f_...CreateResourceHandler’:
pyx_stage/cefpython_py314.cpp:114943:107: note: at offset 16 into destination object of size 16 allocated by ‘operator new’
114943 |   __pyx_v_resourceHandler = ((CefRefPtr<CefResourceHandler> )new ResourceHandler(__pyx_v_resourceHandlerId));

On CI where gcc 13 is used, also see the same warning

[cztomczak]

My first guess is that this is a GCC false positive. The warning comes from std::atomic, not from any obvious string operation.