Function pv_escape 

pub unsafe fn pv_escape(
    my_perl: *mut PerlInterpreter,
    a: *mut SV,
    b: *const c_char,
    c: STRLEN,
    d: STRLEN,
    e: *mut STRLEN,
    f: U32,
) -> *mut c_char

thx shim for crate::pv_escape.