cffi-sys:%foreign-funcall doesn't pass the calling convention to si:call-cfun

[davidmullen]

Technically an issue with CFFI, but it's in the contrib directory.

For cffi:foreign-funcall the default calling convention is :cdecl.

(require :asdf)
(require :cffi)

Then:

> (cffi:foreign-funcall "strlen" :string "foo" :int)

Debugger called in: #<thread "Initial" active (10204) 0x7f2cccf3c740 7f2cca4f1000>.

#<a SIMPLE-ERROR 139829904682848>:
    NIL does no denote a valid calling convention.

For mk_si_call_cfun the default calling convention is nil.

This function, si:call-cfun, is called from cffi-mkcl.lisp.

[jcbeaudoin]

I goofed during a massive commit a while back. I did not transform properly the default value of two &optional arguments in src/c/ffi.c. I will commit the fix some time tonight. My sincere apologies for the inconvenience.

[jcbeaudoin]

commit e6d1df0 on master/head should be the needed fix. Please try.