[cffi-devel] cffi-clisp.lisp multiple-value-bind usage of variable "error" conflicts with another package

[Fred Stone]

I am attempting to use cffi on a Clisp 2.41 build running under Cygwin. 
I can get cffi to load using asdf, but when I loaded a package that uses 
cffi, I got an error message "ERROR is a constant: may not be used as a 
variable".

In cffi-clisp.lisp, around line 234;
    (multiple-value-bind (ff error) ...
is causing the problem. I patched this to:
    (multiple-value-bind (ff fferror)
and also corrected the subsequent two references to error on lines 249 
and 250 and managed to get past this particular problem.

In trying to localize the source of the name conflict, it appears that 
one of the optional modules that I have included in Clisp is the source 
of the conflit. These would include GDI, PCRE, RAWSOCK, LDAP, FASTCGI or 
ZLIB. The BASE build without the optional modules didn't have the name 
conflict, while the FULL build does. I have not determined which of the 
modules above was defining the constant "error".