[Larceny-users] Bug in case-lambda

[David Van Horn]

David Van Horn wrote:
> I noticed that when running in non-R6RS mode, a case-lambda form with no 
> clauses causes a syntax error:
> 
> $ larceny
> Larceny v0.97 "Funny in the Head" (Aug 19 2009 04:24:46, 
> precise:Posix:unified)
> larceny.heap, built on Wed Aug 19 04:26:48 EDT 2009
> 
>  > (case-lambda)
> ERROR detected during macro expansion:
> Use of macro does not match definition
> (case-lambda)
> #f
> 
> This is a bug according to R6RS and SRFI 16.

Actually, I believe this also demonstrates a bug in the reference 
implementation for SRFI 16.  The specification states:

(CASE-LAMBDA <clause> ...)

implying a case-lambda form includes 0 or more clauses, but the 
reference implementation accepts only 1 or more.

David