functions, process substitution, bad file descriptor

[Ben Hyde]

I ran into a problem using process substitution.  A much reduced  
version is
show below.  The function f2 has the problem, the function f1 does  
not.  Are
there is some facts about the life cycle of the files created by
process substitution I don't appreciate?  - ben

bash-3.2$ ls -l /tmp/foo
-rwxr-xr-x  1 bhyde  wheel  105 Feb 27 09:13 /tmp/foo

bash-3.2$ cat /tmp/foo
#!/bin/bash
f1(){
  cat $1
  date
}
f2(){
  date
  cat $1
}
cat <(echo hi)
f1 <(echo bye)
f2 <(echo l8r)

bash-3.2$ bash --version
GNU bash, version 3.2.17(1)-release (i386-apple-darwin9.0)
Copyright (C) 2005 Free Software Foundation, Inc.

bash-3.2$ /tmp/foo
hi
bye
Fri Feb 27 09:18:45 EST 2009
Fri Feb 27 09:18:45 EST 2009
cat: /dev/fd/63: Bad file descriptor
bash-3.2$