Function hv_store_flags 

pub unsafe fn hv_store_flags(
    my_perl: *mut PerlInterpreter,
    hv: *mut HV,
    key: *const c_char,
    klen: I32,
    val: *mut SV,
    hash: U32,
    flags: c_int,
) -> *mut *mut SV

thx shim for crate::hv_store_flags.