cstr 0.2.12

Macro for building static CStr reference
Documentation 
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use cstr::cstr;
use std::ffi::CStr;

fn main() {
    let foo: &'static CStr = cstr!("foo\u{4e00}bar");
    let expected = b"foo\xe4\xb8\x80bar\0";
    assert_eq!(foo, CStr::from_bytes_with_nul(expected).unwrap());
}