Function cop_hints_fetch_pvn 

pub unsafe fn cop_hints_fetch_pvn(
    my_perl: *mut PerlInterpreter,
    cop: *const COP,
    key: *const c_char,
    keylen: STRLEN,
    hash: U32,
    flags: U32,
) -> *mut SV

thx shim for crate::cop_hints_fetch_pvn.