test_expect_success 'tar archive of empty tree is empty' '
git archive --format=tar HEAD: >empty.tar &&
perl -e "print \"\\0\" x 10240" >10knuls.tar &&
- test_cmp 10knuls.tar empty.tar
+ test_cmp_bin 10knuls.tar empty.tar
'
test_expect_success 'tar archive of empty tree with prefix' '