https://github.com/ClickHouse/ClickHouse/blob/9a48cf0da8badfc5f3da08611eb44961aa28e3f6/src/Functions/FunctionsHashing.h#L669-L671

There's a call to `blake3_free_char_pointer` that passes ownership of the pointer back to Rust (which then frees the memory), then there's a call to `std::string`'s constructor that accepts that now-freed pointer.
{
        throw Exception("Java hash is not combineable for multiple arguments", ErrorCodes::NOT_IMPLEMENTED);
    }
    static constexpr bool use_int_hash_for_pods = false;
};
struct JavaHashUTF16LEImpl
{
    static constexpr auto name = "javaHashUTF16LE";
    using ReturnType = Int32;
    static Int32 apply(const char * raw_data, const size_t raw_size)
    {
        char * data = const_cast<char *>(raw_data);
        size_t size = raw_size;
        
        if (size >= 2 && data[0] == '\xFF' && data[1] == '\xFE')
        {
            data += 2;
            size -= 2;
        }
        if (size % 2 != 0)
            throw Exception("Arguments for javaHashUTF16LE must be in the form of UTF-16", ErrorCodes::BAD_ARGUMENTS);
        UInt32 h = 0;
        for (size_t i = 0; i < size; i += 2)
            h = 31 * h + static_cast<UInt16>(static_cast<UInt8>(data[i]) | static_cast<UInt8>(data[i + 1]) << 8);
        return static_cast<Int32>(h);
    }
    static Int32 combineHashes(Int32, Int32)