527 check_mtime(buf_T *buf, stat_T *st)  in check_mtime()  argument
530 		  && time_differs(st, buf->b_mtime_read, buf->b_mtime_read_ns))  in check_mtime()
1171 	stat_T	    st;  in buf_write()  local
1188 		    || mch_lstat((char *)fname, &st) < 0  in buf_write()
1189 		    || st.st_dev != st_old.st_dev  in buf_write()
1190 		    || st.st_ino != st_old.st_ino  in buf_write()
1192 		    || st.st_uid != st_old.st_uid  in buf_write()
1193 		    || st.st_gid != st_old.st_gid  in buf_write()
1215 		    if (mch_lstat((char *)IObuff, &st) < 0)  in buf_write()
1228 		    if (mch_stat((char *)IObuff, &st) < 0  in buf_write()
1229 			    || st.st_uid != st_old.st_uid  in buf_write()
1230 			    || st.st_gid != st_old.st_gid  in buf_write()
1231 			    || (long)st.st_mode != perm)  in buf_write()
1247 			    if (mch_lstat((char *)IObuff, &st) < 0)  in buf_write()
1264 	    lstat_res = mch_lstat((char *)fname, &st);  in buf_write()
1269 		    && st.st_ino != st_old.st_ino)  in buf_write()
1275 		    && (lstat_res != 0 || st.st_ino == st_old.st_ino))  in buf_write()
1819 		    stat_T	st;  in buf_write()  local
1823 			    || (mch_lstat((char *)fname, &st) == 0  in buf_write()
1824 				&& (st.st_dev != st_old.st_dev  in buf_write()
1825 				    || st.st_ino != st_old.st_ino)))  in buf_write()
1853 		    stat_T	st;  in buf_write()  local
1869 			    if (mch_stat((char *)fname, &st) < 0)  in buf_write()
1872 			    if (mch_stat((char *)fname, &st) >= 0)  in buf_write()
1883 		    if (!newfile && mch_stat((char *)fname, &st) < 0)  in buf_write()
1895 		stat_T	st;  in buf_write()  local
1903 			&& mch_fstat(fd, &st) == 0  in buf_write()
1904 			&& st.st_ino != st_old.st_ino)  in buf_write()
2200 	    stat_T	st;  in buf_write()  local
2204 	    if (mch_stat((char *)wfname, &st) < 0  in buf_write()
2205 		    || st.st_uid != st_old.st_uid  in buf_write()
2206 		    || st.st_gid != st_old.st_gid)  in buf_write()
2453 	    stat_T	st;  in buf_write()  local
2459 	    else if (mch_stat(org, &st) < 0)  in buf_write()