gistfile1.txt

$ git commit
error: unable to set permission to '.git/objects/66/e3caef41d42e6c0a26bd275d3541ed4fde280e'
error: Error building trees

--- in vim, with git-1.6.4.4:
:tags
  # TO tag         FROM line  in file/text
  1  1 write_cache_as_tree    42  builtin-write-tree.c
  2  1 cache_tree_update   570  cache-tree.c
  3  1 update_one        375  cache-tree.c
  4  1 write_sha1_file   350  cache-tree.c
  5  1 write_loose_object  2414  sha1_file.c
  6  1 move_temp_to_file  2397  sha1_file.c
  7  1 set_shared_perm  2262  sha1_file.c
>