58 lines
1.8 KiB
Rust
58 lines
1.8 KiB
Rust
#![allow(unused, clippy::redundant_clone, clippy::useless_vec)]
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#![warn(clippy::option_as_ref_deref)]
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use std::ffi::{CString, OsString};
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use std::ops::{Deref, DerefMut};
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use std::path::PathBuf;
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fn main() {
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let mut opt = Some(String::from("123"));
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let _ = opt.clone().as_ref().map(Deref::deref).map(str::len);
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#[rustfmt::skip]
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let _ = opt.clone()
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.as_ref().map(
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Deref::deref
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)
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.map(str::len);
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let _ = opt.as_mut().map(DerefMut::deref_mut);
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let _ = opt.as_ref().map(String::as_str);
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let _ = opt.as_ref().map(|x| x.as_str());
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let _ = opt.as_mut().map(String::as_mut_str);
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let _ = opt.as_mut().map(|x| x.as_mut_str());
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let _ = Some(CString::new(vec![]).unwrap()).as_ref().map(CString::as_c_str);
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let _ = Some(OsString::new()).as_ref().map(OsString::as_os_str);
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let _ = Some(PathBuf::new()).as_ref().map(PathBuf::as_path);
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let _ = Some(Vec::<()>::new()).as_ref().map(Vec::as_slice);
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let _ = Some(Vec::<()>::new()).as_mut().map(Vec::as_mut_slice);
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let _ = opt.as_ref().map(|x| x.deref());
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let _ = opt.clone().as_mut().map(|x| x.deref_mut()).map(|x| x.len());
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let vc = vec![String::new()];
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let _ = Some(1_usize).as_ref().map(|x| vc[*x].as_str()); // should not be linted
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let _: Option<&str> = Some(&String::new()).as_ref().map(|x| x.as_str()); // should not be linted
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let _ = opt.as_ref().map(|x| &**x);
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let _ = opt.as_mut().map(|x| &mut **x);
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// Issue #5927
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let _ = opt.as_ref().map(std::ops::Deref::deref);
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}
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#[clippy::msrv = "1.39"]
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fn msrv_1_39() {
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let opt = Some(String::from("123"));
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let _ = opt.as_ref().map(String::as_str);
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}
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#[clippy::msrv = "1.40"]
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fn msrv_1_40() {
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let opt = Some(String::from("123"));
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let _ = opt.as_ref().map(String::as_str);
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}
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