Function libffi_sys::ffi_prep_closure_loc

pub unsafe extern fn ffi_prep_closure_loc(arg1: *mut ffi_closure,
                                          arg2: *mut ffi_cif,
                                          fun: Option<unsafe extern fn(_: *mut ffi_cif, _: *mut c_void, _: *mut *mut c_void, _: *mut c_void)>,
                                          user_data: *mut c_void,
                                          codeloc: *mut c_void)
                                          -> ffi_status