# The following snippets fail to compile
## Inner null is denied at compile-time
```rust ,compile_fail
use ::byte_strings::*;
let _ = c!("Hell\0, World!");
```
## `const_concat!` rejects byte strings
```rust ,compile_fail
use ::byte_strings::*;
let _ = const_::concat!(b"\xff\xff");
let _ = const_::concat!(b"Hi");
```