bug#17096: Guile 1.8: syntax-case messed up when "void" is defined

[David Kastrup]

When running the following program

(define void 6)
(use-modules (ice-9 syncase))
(define-syntax absurd
  (lambda (x)
    (syntax-case x ()
      ((_ var) (syntax var)))))

through Guile 1.8, I get the error

ERROR: Wrong type to apply: 6

The same appears to go through without problem (apart from the
deprecation warning for the module) on Guile 2.0.

Is there any workaround?  Apart from the obvious "don't define void"
which is not a good option for the actual application at hand since the
function is part of a user-level API.  And it's not like "void" is
documented as being anything here...

-- 
David Kastrup