SIGNATURE_CHECK (GNULIB_NAMESPACE::tsearch, void *,
(const void *, void **, _gl_search_compar_fn));
SIGNATURE_CHECK (GNULIB_NAMESPACE::tfind, void *,
SIGNATURE_CHECK (GNULIB_NAMESPACE::tsearch, void *,
(const void *, void **, _gl_search_compar_fn));
SIGNATURE_CHECK (GNULIB_NAMESPACE::tfind, void *,