bug in `ls` while using "-h" flag on files of bytesize between 1023487 and 1024000

output

-rw-r--r--  1 matthew  staff  1023487 Apr  7 15:34 tmpfile
-rw-r--r--  1 matthew  staff   999K Apr  7 15:34 tmpfile

-rw-r--r--  1 matthew  staff  1023488 Apr  7 15:34 tmpfile
-rw-r--r--  1 matthew  staff   1000 Apr  7 15:34 tmpfile
-rw-r--r--  1 matthew  staff  1023999 Apr  7 15:34 tmpfile
-rw-r--r--  1 matthew  staff   1000 Apr  7 15:34 tmpfile

-rw-r--r--  1 matthew  staff  1024000 Apr  7 15:34 tmpfile
-rw-r--r--  1 matthew  staff   1.0M Apr  7 15:34 tmpfile

repro.sh

#!/bin/bash

ls_test_on_file_w_bs() {
  dd if=/dev/zero of=tmpfile bs=$1 count=1 > /dev/null 2>&1
  ls -l tmpfile
  ls -hl tmpfile
}

ls_test_on_file_w_bs 1023487

echo

ls_test_on_file_w_bs 1023488
# and all sizes in between
ls_test_on_file_w_bs 1023999

echo

ls_test_on_file_w_bs 1024000