have_df_p        1179 ext/date/date_core.c     if (!have_df_p(x)) {
have_df_p        1201 ext/date/date_core.c 	assert(have_df_p(x));
have_df_p        1208 ext/date/date_core.c 	assert(have_df_p(x));
have_df_p        1297 ext/date/date_core.c     assert(have_df_p(x));
have_df_p        1305 ext/date/date_core.c     assert(have_df_p(x));
have_df_p        2996 ext/date/date_core.c     assert(have_df_p(dat) || have_time_p(dat));