Description of problem:

  grep -Fw may find an incorrect match

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

  grep-2.5.1-31

How reproducible:

   Every time.


Steps to Reproduce:
   Run grep -fW with 2 words to match, one which matches the end of a word and
the other teh start of the same word. But neither matches a whole word (well,
that seems to be the requirement).
  
Actual results:

   grep reports a match:


Expected results:

   grep should not report a match


Additional info:
   A specific example for grep built from the source rpm, with all patches applied.

my-system*[1] echo "LIN7C 55327" | ../grep-2.5.1a/src/grep -wF -e 5327 -e 5532 
LIN7C 55327


   This is grep-specific rather than FC3-specific.  Compiling the same code on
an Irix system produces the same error.