| #![warn(clippy::strlen_on_c_strings)] |
| #![allow(dead_code, clippy::manual_c_str_literals)] |
| #![feature(rustc_private)] |
| extern crate libc; |
| |
| #[allow(unused)] |
| use libc::strlen; |
| use std::ffi::{CStr, CString}; |
| |
| fn main() { |
| // CString |
| let cstring = CString::new("foo").expect("CString::new failed"); |
| let _ = cstring.as_bytes().len(); |
| |
| // CStr |
| let cstr = CStr::from_bytes_with_nul(b"foo\0").expect("CStr::from_bytes_with_nul failed"); |
| let _ = cstr.to_bytes().len(); |
| |
| let _ = cstr.to_bytes().len(); |
| |
| let pcstr: *const &CStr = &cstr; |
| let _ = unsafe { (*pcstr).to_bytes().len() }; |
| |
| unsafe fn unsafe_identity<T>(x: T) -> T { |
| x |
| } |
| let _ = unsafe { unsafe_identity(cstr).to_bytes().len() }; |
| let _ = unsafe { unsafe_identity(cstr) }.to_bytes().len(); |
| |
| let f: unsafe fn(_) -> _ = unsafe_identity; |
| let _ = unsafe { f(cstr).to_bytes().len() }; |
| } |