You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/divans/src/ffi
    
    the code of the file until where you have to start completion: #![cfg(not(feature="safe"))]

#[no_mangle]
use core;
use core::slice;
use ::StaticCommand;
use super::DivansDecompressorFactory;
use super::interface::Decompressor;
pub mod interface;
p
    
pub unsafe extern fn divans_compressor_free_u8(state_ptr: *mut DivansCompressorState, data: *mut u8, size: usize) {
    if let Some(free_fn) = (*state_ptr).custom_allocator.free_func {
        free_fn((*state_ptr).custom_allocator.opaque, core::mem::transmute::<*mut u8, *mut c_void>(data));
    } else {
        alloc_util::free_stdlib(data, size);
    }
}