diff options
| -rw-r--r-- | clippy_lints/src/if_let_mutex.rs | 11 | ||||
| -rw-r--r-- | tests/ui/if_let_mutex.edition2021.stderr (renamed from tests/ui/if_let_mutex.stderr) | 8 | ||||
| -rw-r--r-- | tests/ui/if_let_mutex.rs | 11 |
3 files changed, 23 insertions, 7 deletions
diff --git a/clippy_lints/src/if_let_mutex.rs b/clippy_lints/src/if_let_mutex.rs index ba80c099a01..943713654de 100644 --- a/clippy_lints/src/if_let_mutex.rs +++ b/clippy_lints/src/if_let_mutex.rs @@ -7,6 +7,7 @@ use rustc_errors::Diag; use rustc_hir::{Expr, ExprKind}; use rustc_lint::{LateContext, LateLintPass}; use rustc_session::declare_lint_pass; +use rustc_span::edition::Edition::Edition2024; use rustc_span::sym; declare_clippy_lint! { @@ -14,6 +15,12 @@ declare_clippy_lint! { /// Checks for `Mutex::lock` calls in `if let` expression /// with lock calls in any of the else blocks. /// + /// ### Disabled starting in Edition 2024 + /// This lint is effectively disabled starting in + /// Edition 2024 as `if let ... else` scoping was reworked + /// such that this is no longer an issue. See + /// [Proposal: stabilize if_let_rescope for Edition 2024](https://github.com/rust-lang/rust/issues/131154) + /// /// ### Why is this bad? /// The Mutex lock remains held for the whole /// `if let ... else` block and deadlocks. @@ -45,6 +52,10 @@ declare_lint_pass!(IfLetMutex => [IF_LET_MUTEX]); impl<'tcx> LateLintPass<'tcx> for IfLetMutex { fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) { + if cx.tcx.sess.edition() >= Edition2024 { + return; + } + if let Some(higher::IfLet { let_expr, if_then, diff --git a/tests/ui/if_let_mutex.stderr b/tests/ui/if_let_mutex.edition2021.stderr index 45df4ac4d67..984d6adbb2a 100644 --- a/tests/ui/if_let_mutex.stderr +++ b/tests/ui/if_let_mutex.edition2021.stderr @@ -1,5 +1,5 @@ error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:11:5 + --> tests/ui/if_let_mutex.rs:16:5 | LL | if let Err(locked) = m.lock() { | ^ - this Mutex will remain locked for the entire `if let`-block... @@ -19,7 +19,7 @@ LL | | }; = help: to override `-D warnings` add `#[allow(clippy::if_let_mutex)]` error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:24:5 + --> tests/ui/if_let_mutex.rs:29:5 | LL | if let Some(locked) = m.lock().unwrap().deref() { | ^ - this Mutex will remain locked for the entire `if let`-block... @@ -37,7 +37,7 @@ LL | | }; = help: move the lock call outside of the `if let ...` expression error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:46:5 + --> tests/ui/if_let_mutex.rs:51:5 | LL | if let Ok(i) = mutex.lock() { | ^ ----- this Mutex will remain locked for the entire `if let`-block... @@ -54,7 +54,7 @@ LL | | }; = help: move the lock call outside of the `if let ...` expression error: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a deadlock - --> tests/ui/if_let_mutex.rs:55:5 + --> tests/ui/if_let_mutex.rs:60:5 | LL | if let Ok(_) = m1.lock() { | ^ -- this Mutex will remain locked for the entire `if let`-block... diff --git a/tests/ui/if_let_mutex.rs b/tests/ui/if_let_mutex.rs index bb0eadfca1c..80eee293989 100644 --- a/tests/ui/if_let_mutex.rs +++ b/tests/ui/if_let_mutex.rs @@ -1,3 +1,8 @@ +//@ compile-flags: -Zunstable-options + +//@revisions: edition2021 edition2024 +//@[edition2021] edition:2021 +//@[edition2024] edition:2024 #![warn(clippy::if_let_mutex)] #![allow(clippy::redundant_pattern_matching)] @@ -9,7 +14,7 @@ fn do_stuff<T>(_: T) {} fn if_let() { let m = Mutex::new(1_u8); if let Err(locked) = m.lock() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(locked); } else { let lock = m.lock().unwrap(); @@ -22,7 +27,7 @@ fn if_let() { fn if_let_option() { let m = Mutex::new(Some(0_u8)); if let Some(locked) = m.lock().unwrap().deref() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(locked); } else { let lock = m.lock().unwrap(); @@ -44,7 +49,7 @@ fn if_let_different_mutex() { fn mutex_ref(mutex: &Mutex<i32>) { if let Ok(i) = mutex.lock() { - //~^ ERROR: calling `Mutex::lock` inside the scope of another `Mutex::lock` causes a d + //~[edition2021]^ if_let_mutex do_stuff(i); } else { let _x = mutex.lock(); |