Function prescan_version 

pub unsafe fn prescan_version(
    my_perl: *mut PerlInterpreter,
    a: *const c_char,
    b: bool,
    c: *const *const c_char,
    d: *mut bool,
    e: *mut c_int,
    f: *mut c_int,
    g: *mut bool,
) -> *const c_char

thx shim for crate::prescan_version.