98 lines
1.9 KiB
Rust
98 lines
1.9 KiB
Rust
// does not test any rustfixable lints
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#![warn(clippy::clone_on_ref_ptr)]
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#![allow(unused)]
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#![allow(clippy::redundant_clone, clippy::uninlined_format_args, clippy::unnecessary_wraps)]
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//@no-rustfix
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use std::cell::RefCell;
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use std::rc::{self, Rc};
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use std::sync::{self, Arc};
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trait SomeTrait {}
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struct SomeImpl;
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impl SomeTrait for SomeImpl {}
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fn main() {}
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fn clone_on_ref_ptr() {
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let rc = Rc::new(true);
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let arc = Arc::new(true);
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let rcweak = Rc::downgrade(&rc);
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let arc_weak = Arc::downgrade(&arc);
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rc.clone();
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Rc::clone(&rc);
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arc.clone();
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Arc::clone(&arc);
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rcweak.clone();
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rc::Weak::clone(&rcweak);
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arc_weak.clone();
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sync::Weak::clone(&arc_weak);
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let x = Arc::new(SomeImpl);
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let _: Arc<dyn SomeTrait> = x.clone();
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}
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fn clone_on_copy_generic<T: Copy>(t: T) {
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t.clone();
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Some(t).clone();
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}
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mod many_derefs {
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struct A;
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struct B;
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struct C;
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struct D;
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#[derive(Copy, Clone)]
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struct E;
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macro_rules! impl_deref {
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($src:ident, $dst:ident) => {
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impl std::ops::Deref for $src {
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type Target = $dst;
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fn deref(&self) -> &Self::Target {
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&$dst
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}
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}
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};
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}
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impl_deref!(A, B);
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impl_deref!(B, C);
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impl_deref!(C, D);
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impl std::ops::Deref for D {
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type Target = &'static E;
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fn deref(&self) -> &Self::Target {
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&&E
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}
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}
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fn go1() {
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let a = A;
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let _: E = a.clone();
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let _: E = *****a;
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}
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}
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mod issue2076 {
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use std::rc::Rc;
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macro_rules! try_opt {
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($expr: expr) => {
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match $expr {
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Some(value) => value,
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None => return None,
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}
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};
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}
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fn func() -> Option<Rc<u8>> {
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let rc = Rc::new(42);
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Some(try_opt!(Some(rc)).clone())
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}
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}
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