;;;
;;; without the patch
;;;

$ /home/mario/local/chicken-master/bin/csi -n

CHICKEN
(c) 2008-2013, The Chicken Team
(c) 2000-2007, Felix L. Winkelmann
Version 4.8.2 (rev 5162cc4)
linux-unix-gnu-x86-64 [ 64bit manyargs dload ptables ]
compiled 2013-07-06 on inpiron (Linux)

#;1> (use posix)
; loading /home/mario/local/chicken-master/lib/chicken/7/posix.import.so ...
; loading library posix ...
#;2> 


;;;
;;; with the patch
;;;

$ /home/mario/local/chicken-master/bin/csi -n

CHICKEN
(c) 2008-2013, The Chicken Team
(c) 2000-2007, Felix L. Winkelmann
Version 4.8.2 (rev 7cd3f7b)
linux-unix-gnu-x86-64 [ 64bit manyargs dload ptables ]
compiled 2013-07-06 on inpiron (Linux)

#;1> (use posix)
; loading /home/mario/local/chicken-master/lib/chicken/7/posix.import.so ...
; loading library posix ...

Error: unbound variable: current-effective-user-id

        Call history:

        csi.scm:422: ##sys#call-with-values       
        csi.scm:422: eval         
        <syntax>          (use posix)
        <syntax>          (##core#require-extension (posix) #t)
        <syntax>          (##core#begin (##core#begin (##sys#load-library (quote posix) #f) (import posix)) (##core#undefined)...
        <syntax>          (##core#begin (##sys#load-library (quote posix) #f) (import posix))
        <syntax>          (##sys#load-library (quote posix) #f)
        <syntax>          (quote posix)
        <syntax>          (##core#quote posix)
        <syntax>          (import posix)
        <syntax>          (##core#undefined)
        <syntax>          (##core#undefined)
        <eval>    (##sys#load-library (quote posix) #f) <--