Description of problem:
  The 'du'  seems to leak file descriptors for each  argv  parameter,
  with end result that:
    du *
  in a directory with _lots_ of _files_ gives error message:
  (actually lots of argv entries, even if they are the same file)

  du: cannot open current directory: Too many open files
  du: `30968': Too many open files

  (files with all numeric names in my test case)

  My  ulimit -n   is 1024,  and first error is on line 1022 of the output.

Version-Release number of selected component (if applicable):
  coreutils-5.0-3

How reproducible:
  Always

Steps to Reproduce:
  1. Create a directory with about a dozen files (or go to such),
  2. ulimit -n 8
  3. du -s *

Additional info:
  For this to happen,  'du'  argument set must have more elements, than
  your current 'ulimit -n' value is (n=10 allows 10-2 args without failure)