040000 tree 3e9333884f54085e2820fa8da2fc8c0512aea259	gdb
040000 tree 480e33da2b77bbc41fff98823cdbda48fe9ffbfd	mmalloc
040000 tree 694ec1f1d99acb5bfff36416d27b4d6869a553c1	readline
040000 tree 8e96d707f3c3d7fd6b8301af29fbbfc62b43e61d	sim