src/include/common/unicode_combining_table.h is currently not meant to be included standalone. Things could be refactored to allow it, but that would be beyond the present purpose. So adding an exclusion here seems best.
cc25464763 Add exclusion to headercheck
src/tools/pginclude/cpluspluscheck | 3 +++
src/tools/pginclude/headerscheck | 3 +++
2 files changed, 6 insertions(+)