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https://github.com/rust-lang/rust-clippy
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399fe32893
Fixes: #11714 changelog: [`arc_with_non_send_sync`]: Suggest RC over unsafe impl Co-authored-by: Alejandra González <blyxyas@gmail.com>
48 lines
1.3 KiB
Rust
48 lines
1.3 KiB
Rust
//@aux-build:proc_macros.rs
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#![warn(clippy::arc_with_non_send_sync)]
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#![allow(unused_variables)]
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#[macro_use]
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extern crate proc_macros;
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use std::cell::RefCell;
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use std::ptr::{null, null_mut};
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use std::sync::{Arc, Mutex};
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fn foo<T>(x: T) {
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// Should not lint - purposefully ignoring generic args.
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let a = Arc::new(x);
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}
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fn issue11076<T>() {
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let a: Arc<Vec<T>> = Arc::new(Vec::new());
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}
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fn issue11232() {
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external! {
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let a: Arc<*const u8> = Arc::new(null());
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let a: Arc<*mut u8> = Arc::new(null_mut());
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}
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with_span! {
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span
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let a: Arc<*const u8> = Arc::new(null());
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let a: Arc<*mut u8> = Arc::new(null_mut());
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}
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}
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fn main() {
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let _ = Arc::new(42);
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let _ = Arc::new(RefCell::new(42));
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//~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
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//~| NOTE: the trait `Sync` is not implemented for `RefCell<i32>`
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let mutex = Mutex::new(1);
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let _ = Arc::new(mutex.lock().unwrap());
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//~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
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//~| NOTE: the trait `Send` is not implemented for `MutexGuard<'_, i32>`
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let _ = Arc::new(&42 as *const i32);
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//~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
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//~| NOTE: the trait `Send` is not implemented for `*const i32`
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//~| NOTE: the trait `Sync` is not implemented for `*const i32`
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}
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