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| author | flip1995 <hello@philkrones.com> | 2020-09-24 14:49:22 +0200 |
|---|---|---|
| committer | flip1995 <hello@philkrones.com> | 2020-09-24 14:49:22 +0200 |
| commit | f1f1e0ba8ea1895eb2568e9d19378bbe43a17bcb (patch) | |
| tree | 07605b9855fd4fe6e1904fb0f15c4bd9cc828369 /src/tools/clippy/tests | |
| parent | 86b4172305bb28612510db9ad3ebf2a4bb86f70f (diff) | |
| parent | e636b88aa180e8cab9e28802aac90adbc984234d (diff) | |
| download | rust-f1f1e0ba8ea1895eb2568e9d19378bbe43a17bcb.tar.gz rust-f1f1e0ba8ea1895eb2568e9d19378bbe43a17bcb.zip | |
Merge commit 'e636b88aa180e8cab9e28802aac90adbc984234d' into clippyup
Diffstat (limited to 'src/tools/clippy/tests')
56 files changed, 2089 insertions, 657 deletions
diff --git a/src/tools/clippy/tests/ui/atomic_ordering_exchange.rs b/src/tools/clippy/tests/ui/atomic_ordering_exchange.rs new file mode 100644 index 00000000000..1ddc12f9ab2 --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_exchange.rs @@ -0,0 +1,45 @@ +#![warn(clippy::invalid_atomic_ordering)] + +use std::sync::atomic::{AtomicUsize, Ordering}; + +fn main() { + // `compare_exchange` (not weak) testing + let x = AtomicUsize::new(0); + + // Allowed ordering combos + let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Relaxed); + let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Acquire); + let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Relaxed); + let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Relaxed); + let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Acquire); + let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Relaxed); + let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Relaxed); + let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Acquire); + let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::SeqCst); + + // AcqRel is always forbidden as a failure ordering + let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::AcqRel); + let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::AcqRel); + let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::AcqRel); + let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::AcqRel); + let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::AcqRel); + + // Release is always forbidden as a failure ordering + let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Release); + let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Release); + let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Release); + let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Release); + let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Release); + + // Release success order forbids failure order of Acquire or SeqCst + let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Acquire); + let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::SeqCst); + + // Relaxed success order also forbids failure order of Acquire or SeqCst + let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::SeqCst); + let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Acquire); + + // Acquire/AcqRel forbids failure order of SeqCst + let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::SeqCst); + let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::SeqCst); +} diff --git a/src/tools/clippy/tests/ui/atomic_ordering_exchange.stderr b/src/tools/clippy/tests/ui/atomic_ordering_exchange.stderr new file mode 100644 index 00000000000..4b9bfef7974 --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_exchange.stderr @@ -0,0 +1,131 @@ +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:21:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::invalid-atomic-ordering` implied by `-D warnings` + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:22:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:23:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:24:56 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:25:56 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:28:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:29:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:30:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:31:56 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:32:56 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_exchange.rs:35:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Acquire); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_exchange.rs:36:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_exchange.rs:39:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_exchange.rs:40:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Acquire); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `Acquire` + --> $DIR/atomic_ordering_exchange.rs:43:57 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange's failure ordering may not be stronger than the success ordering of `AcqRel` + --> $DIR/atomic_ordering_exchange.rs:44:56 + | +LL | let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: aborting due to 16 previous errors + diff --git a/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.rs b/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.rs new file mode 100644 index 00000000000..59069902507 --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.rs @@ -0,0 +1,47 @@ +#![warn(clippy::invalid_atomic_ordering)] + +use std::sync::atomic::{AtomicPtr, Ordering}; + +fn main() { + let ptr = &mut 5; + let ptr2 = &mut 10; + // `compare_exchange_weak` testing + let x = AtomicPtr::new(ptr); + + // Allowed ordering combos + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Release, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Relaxed); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::SeqCst); + + // AcqRel is always forbidden as a failure ordering + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Relaxed, Ordering::AcqRel); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::AcqRel); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::AcqRel); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::AcqRel); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::SeqCst, Ordering::AcqRel); + + // Release is always forbidden as a failure ordering + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Release); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Release); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Release, Ordering::Release); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Release); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Release); + + // Release success order forbids failure order of Acquire or SeqCst + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::Acquire); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::SeqCst); + + // Relaxed success order also forbids failure order of Acquire or SeqCst + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Acquire); + + // Acquire/AcqRel forbids failure order of SeqCst + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::SeqCst); + let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::SeqCst); +} diff --git a/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.stderr b/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.stderr new file mode 100644 index 00000000000..de7026f3ffa --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_exchange_weak.stderr @@ -0,0 +1,131 @@ +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:23:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Relaxed, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::invalid-atomic-ordering` implied by `-D warnings` + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:24:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:25:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:26:66 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:27:66 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::SeqCst, Ordering::AcqRel); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:30:67 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:31:67 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Acquire, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:32:67 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Release, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:33:66 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::AcqRel, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:34:66 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::SeqCst, Ordering::Release); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_exchange_weak.rs:37:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::Acquire); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_exchange_weak.rs:38:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Release, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_exchange_weak.rs:41:67 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_exchange_weak.rs:42:67 + | +LL | let _ = x.compare_exchange_weak(ptr, ptr2, Ordering::Relaxed, Ordering::Acquire); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `Acquire` + --> $DIR/atomic_ordering_exchange_weak.rs:45:67 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::Acquire, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: compare_exchange_weak's failure ordering may not be stronger than the success ordering of `AcqRel` + --> $DIR/atomic_ordering_exchange_weak.rs:46:66 + | +LL | let _ = x.compare_exchange_weak(ptr2, ptr, Ordering::AcqRel, Ordering::SeqCst); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: aborting due to 16 previous errors + diff --git a/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.rs b/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.rs new file mode 100644 index 00000000000..550bdb001e4 --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.rs @@ -0,0 +1,45 @@ +#![warn(clippy::invalid_atomic_ordering)] + +use std::sync::atomic::{AtomicIsize, Ordering}; + +fn main() { + // `fetch_update` testing + let x = AtomicIsize::new(0); + + // Allowed ordering combos + let _ = x.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Acquire, Ordering::Acquire, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Acquire, Ordering::Relaxed, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Release, Ordering::Relaxed, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::AcqRel, Ordering::Acquire, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::AcqRel, Ordering::Relaxed, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::SeqCst, Ordering::Relaxed, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::SeqCst, Ordering::Acquire, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::SeqCst, Ordering::SeqCst, |old| Some(old + 1)); + + // AcqRel is always forbidden as a failure ordering + let _ = x.fetch_update(Ordering::Relaxed, Ordering::AcqRel, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Acquire, Ordering::AcqRel, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Release, Ordering::AcqRel, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::AcqRel, Ordering::AcqRel, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::SeqCst, Ordering::AcqRel, |old| Some(old + 1)); + + // Release is always forbidden as a failure ordering + let _ = x.fetch_update(Ordering::Relaxed, Ordering::Release, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Acquire, Ordering::Release, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Release, Ordering::Release, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::AcqRel, Ordering::Release, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::SeqCst, Ordering::Release, |old| Some(old + 1)); + + // Release success order forbids failure order of Acquire or SeqCst + let _ = x.fetch_update(Ordering::Release, Ordering::Acquire, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Release, Ordering::SeqCst, |old| Some(old + 1)); + + // Relaxed success order also forbids failure order of Acquire or SeqCst + let _ = x.fetch_update(Ordering::Relaxed, Ordering::SeqCst, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::Relaxed, Ordering::Acquire, |old| Some(old + 1)); + + // Acquire/AcqRel forbids failure order of SeqCst + let _ = x.fetch_update(Ordering::Acquire, Ordering::SeqCst, |old| Some(old + 1)); + let _ = x.fetch_update(Ordering::AcqRel, Ordering::SeqCst, |old| Some(old + 1)); +} diff --git a/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.stderr b/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.stderr new file mode 100644 index 00000000000..694548ece97 --- /dev/null +++ b/src/tools/clippy/tests/ui/atomic_ordering_fetch_update.stderr @@ -0,0 +1,131 @@ +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:21:47 + | +LL | let _ = x.fetch_update(Ordering::Relaxed, Ordering::AcqRel, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::invalid-atomic-ordering` implied by `-D warnings` + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:22:47 + | +LL | let _ = x.fetch_update(Ordering::Acquire, Ordering::AcqRel, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:23:47 + | +LL | let _ = x.fetch_update(Ordering::Release, Ordering::AcqRel, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:24:46 + | +LL | let _ = x.fetch_update(Ordering::AcqRel, Ordering::AcqRel, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:25:46 + | +LL | let _ = x.fetch_update(Ordering::SeqCst, Ordering::AcqRel, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:28:47 + | +LL | let _ = x.fetch_update(Ordering::Relaxed, Ordering::Release, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:29:47 + | +LL | let _ = x.fetch_update(Ordering::Acquire, Ordering::Release, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:30:47 + | +LL | let _ = x.fetch_update(Ordering::Release, Ordering::Release, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:31:46 + | +LL | let _ = x.fetch_update(Ordering::AcqRel, Ordering::Release, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: fetch_update's failure ordering may not be `Release` or `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:32:46 + | +LL | let _ = x.fetch_update(Ordering::SeqCst, Ordering::Release, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire`, `SeqCst` or `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_fetch_update.rs:35:47 + | +LL | let _ = x.fetch_update(Ordering::Release, Ordering::Acquire, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `Release` + --> $DIR/atomic_ordering_fetch_update.rs:36:47 + | +LL | let _ = x.fetch_update(Ordering::Release, Ordering::SeqCst, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_fetch_update.rs:39:47 + | +LL | let _ = x.fetch_update(Ordering::Relaxed, Ordering::SeqCst, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `Relaxed` + --> $DIR/atomic_ordering_fetch_update.rs:40:47 + | +LL | let _ = x.fetch_update(Ordering::Relaxed, Ordering::Acquire, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^^ + | + = help: consider using ordering mode `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `Acquire` + --> $DIR/atomic_ordering_fetch_update.rs:43:47 + | +LL | let _ = x.fetch_update(Ordering::Acquire, Ordering::SeqCst, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: fetch_update's failure ordering may not be stronger than the success ordering of `AcqRel` + --> $DIR/atomic_ordering_fetch_update.rs:44:46 + | +LL | let _ = x.fetch_update(Ordering::AcqRel, Ordering::SeqCst, |old| Some(old + 1)); + | ^^^^^^^^^^^^^^^^ + | + = help: consider using ordering modes `Acquire` or `Relaxed` instead + +error: aborting due to 16 previous errors + diff --git a/src/tools/clippy/tests/ui/borrow_interior_mutable_const.rs b/src/tools/clippy/tests/ui/borrow_interior_mutable_const.rs index 39f87510548..9fcc9ece49b 100644 --- a/src/tools/clippy/tests/ui/borrow_interior_mutable_const.rs +++ b/src/tools/clippy/tests/ui/borrow_interior_mutable_const.rs @@ -19,16 +19,30 @@ const NO_ANN: &dyn Display = &70; static STATIC_TUPLE: (AtomicUsize, String) = (ATOMIC, STRING); const ONCE_INIT: Once = Once::new(); -trait Trait<T>: Copy { - type NonCopyType; +trait Trait<T> { + type AssocType; const ATOMIC: AtomicUsize; + const INPUT: T; + const ASSOC: Self::AssocType; + + fn function() { + let _ = &Self::INPUT; + let _ = &Self::ASSOC; + } } impl Trait<u32> for u64 { - type NonCopyType = u16; + type AssocType = AtomicUsize; const ATOMIC: AtomicUsize = AtomicUsize::new(9); + const INPUT: u32 = 10; + const ASSOC: Self::AssocType = AtomicUsize::new(11); + + fn function() { + let _ = &Self::INPUT; + let _ = &Self::ASSOC; //~ ERROR interior mutability + } } // This is just a pointer that can be safely dereferended, diff --git a/src/tools/clippy/tests/ui/borrow_interior_mutable_const.stderr b/src/tools/clippy/tests/ui/borrow_interior_mutable_const.stderr index 5800af7e960..ed726a6b46e 100644 --- a/src/tools/clippy/tests/ui/borrow_interior_mutable_const.stderr +++ b/src/tools/clippy/tests/ui/borrow_interior_mutable_const.stderr @@ -1,14 +1,22 @@ error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:66:5 + --> $DIR/borrow_interior_mutable_const.rs:44:18 + | +LL | let _ = &Self::ASSOC; //~ ERROR interior mutability + | ^^^^^^^^^^^ + | + = note: `-D clippy::borrow-interior-mutable-const` implied by `-D warnings` + = help: assign this const to a local or static variable, and use the variable here + +error: a `const` item with interior mutability should not be borrowed + --> $DIR/borrow_interior_mutable_const.rs:80:5 | LL | ATOMIC.store(1, Ordering::SeqCst); //~ ERROR interior mutability | ^^^^^^ | - = note: `-D clippy::borrow-interior-mutable-const` implied by `-D warnings` = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:67:16 + --> $DIR/borrow_interior_mutable_const.rs:81:16 | LL | assert_eq!(ATOMIC.load(Ordering::SeqCst), 5); //~ ERROR interior mutability | ^^^^^^ @@ -16,7 +24,7 @@ LL | assert_eq!(ATOMIC.load(Ordering::SeqCst), 5); //~ ERROR interior mutabi = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:70:22 + --> $DIR/borrow_interior_mutable_const.rs:84:22 | LL | let _once_ref = &ONCE_INIT; //~ ERROR interior mutability | ^^^^^^^^^ @@ -24,7 +32,7 @@ LL | let _once_ref = &ONCE_INIT; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:71:25 + --> $DIR/borrow_interior_mutable_const.rs:85:25 | LL | let _once_ref_2 = &&ONCE_INIT; //~ ERROR interior mutability | ^^^^^^^^^ @@ -32,7 +40,7 @@ LL | let _once_ref_2 = &&ONCE_INIT; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:72:27 + --> $DIR/borrow_interior_mutable_const.rs:86:27 | LL | let _once_ref_4 = &&&&ONCE_INIT; //~ ERROR interior mutability | ^^^^^^^^^ @@ -40,7 +48,7 @@ LL | let _once_ref_4 = &&&&ONCE_INIT; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:73:26 + --> $DIR/borrow_interior_mutable_const.rs:87:26 | LL | let _once_mut = &mut ONCE_INIT; //~ ERROR interior mutability | ^^^^^^^^^ @@ -48,7 +56,7 @@ LL | let _once_mut = &mut ONCE_INIT; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:84:14 + --> $DIR/borrow_interior_mutable_const.rs:98:14 | LL | let _ = &ATOMIC_TUPLE; //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -56,7 +64,7 @@ LL | let _ = &ATOMIC_TUPLE; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:85:14 + --> $DIR/borrow_interior_mutable_const.rs:99:14 | LL | let _ = &ATOMIC_TUPLE.0; //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -64,7 +72,7 @@ LL | let _ = &ATOMIC_TUPLE.0; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:86:19 + --> $DIR/borrow_interior_mutable_const.rs:100:19 | LL | let _ = &(&&&&ATOMIC_TUPLE).0; //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -72,7 +80,7 @@ LL | let _ = &(&&&&ATOMIC_TUPLE).0; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:87:14 + --> $DIR/borrow_interior_mutable_const.rs:101:14 | LL | let _ = &ATOMIC_TUPLE.0[0]; //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -80,7 +88,7 @@ LL | let _ = &ATOMIC_TUPLE.0[0]; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:88:13 + --> $DIR/borrow_interior_mutable_const.rs:102:13 | LL | let _ = ATOMIC_TUPLE.0[0].load(Ordering::SeqCst); //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -88,7 +96,7 @@ LL | let _ = ATOMIC_TUPLE.0[0].load(Ordering::SeqCst); //~ ERROR interior mu = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:94:13 + --> $DIR/borrow_interior_mutable_const.rs:108:13 | LL | let _ = ATOMIC_TUPLE.0[0]; //~ ERROR interior mutability | ^^^^^^^^^^^^ @@ -96,7 +104,7 @@ LL | let _ = ATOMIC_TUPLE.0[0]; //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:99:5 + --> $DIR/borrow_interior_mutable_const.rs:113:5 | LL | CELL.set(2); //~ ERROR interior mutability | ^^^^ @@ -104,7 +112,7 @@ LL | CELL.set(2); //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:100:16 + --> $DIR/borrow_interior_mutable_const.rs:114:16 | LL | assert_eq!(CELL.get(), 6); //~ ERROR interior mutability | ^^^^ @@ -112,7 +120,7 @@ LL | assert_eq!(CELL.get(), 6); //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:113:5 + --> $DIR/borrow_interior_mutable_const.rs:127:5 | LL | u64::ATOMIC.store(5, Ordering::SeqCst); //~ ERROR interior mutability | ^^^^^^^^^^^ @@ -120,12 +128,12 @@ LL | u64::ATOMIC.store(5, Ordering::SeqCst); //~ ERROR interior mutability = help: assign this const to a local or static variable, and use the variable here error: a `const` item with interior mutability should not be borrowed - --> $DIR/borrow_interior_mutable_const.rs:114:16 + --> $DIR/borrow_interior_mutable_const.rs:128:16 | LL | assert_eq!(u64::ATOMIC.load(Ordering::SeqCst), 9); //~ ERROR interior mutability | ^^^^^^^^^^^ | = help: assign this const to a local or static variable, and use the variable here -error: aborting due to 16 previous errors +error: aborting due to 17 previous errors diff --git a/src/tools/clippy/tests/ui/crashes/ice-2636.rs b/src/tools/clippy/tests/ui/crashes/ice-2636.rs deleted file mode 100644 index e0b58157590..00000000000 --- a/src/tools/clippy/tests/ui/crashes/ice-2636.rs +++ /dev/null @@ -1,22 +0,0 @@ -#![allow(dead_code)] - -enum Foo { - A, - B, - C, -} - -macro_rules! test_hash { - ($foo:expr, $($t:ident => $ord:expr),+ ) => { - use self::Foo::*; - match $foo { - $ ( & $t => $ord, - )* - }; - }; -} - -fn main() { - let a = Foo::A; - test_hash!(&a, A => 0, B => 1, C => 2); -} diff --git a/src/tools/clippy/tests/ui/crashes/ice-2636.stderr b/src/tools/clippy/tests/ui/crashes/ice-2636.stderr deleted file mode 100644 index 53799b4fbf1..00000000000 --- a/src/tools/clippy/tests/ui/crashes/ice-2636.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error: you don't need to add `&` to both the expression and the patterns - --> $DIR/ice-2636.rs:12:9 - | -LL | / match $foo { -LL | | $ ( & $t => $ord, -LL | | )* -LL | | }; - | |_________^ -... -LL | test_hash!(&a, A => 0, B => 1, C => 2); - | --------------------------------------- in this macro invocation - | - = note: `-D clippy::match-ref-pats` implied by `-D warnings` - = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) - -error: aborting due to previous error - diff --git a/src/tools/clippy/tests/ui/declare_interior_mutable_const.rs b/src/tools/clippy/tests/ui/declare_interior_mutable_const.rs index b4003ed8932..3afcdca2f04 100644 --- a/src/tools/clippy/tests/ui/declare_interior_mutable_const.rs +++ b/src/tools/clippy/tests/ui/declare_interior_mutable_const.rs @@ -34,60 +34,141 @@ static STATIC_TUPLE: (AtomicUsize, String) = (ATOMIC, STRING); #[allow(clippy::declare_interior_mutable_const)] const ONCE_INIT: Once = Once::new(); -trait Trait<T>: Copy { - type NonCopyType; - +// a constant whose type is a concrete type should be linted at the definition site. +trait ConcreteTypes { const ATOMIC: AtomicUsize; //~ ERROR interior mutable const INTEGER: u64; const STRING: String; - const SELF: Self; // (no error) - const INPUT: T; - //~^ ERROR interior mutable - //~| HELP consider requiring `T` to be `Copy` - const ASSOC: Self::NonCopyType; - //~^ ERROR interior mutable - //~| HELP consider requiring `<Self as Trait<T>>::NonCopyType` to be `Copy` + declare_const!(ANOTHER_ATOMIC: AtomicUsize = Self::ATOMIC); //~ ERROR interior mutable +} - const AN_INPUT: T = Self::INPUT; - //~^ ERROR interior mutable - //~| ERROR consider requiring `T` to be `Copy` - declare_const!(ANOTHER_INPUT: T = Self::INPUT); //~ ERROR interior mutable +impl ConcreteTypes for u64 { + const ATOMIC: AtomicUsize = AtomicUsize::new(9); + const INTEGER: u64 = 10; + const STRING: String = String::new(); } -trait Trait2 { - type CopyType: Copy; +// a helper trait used below +trait ConstDefault { + const DEFAULT: Self; +} + +// a constant whose type is a generic type should be linted at the implementation site. +trait GenericTypes<T, U> { + const TO_REMAIN_GENERIC: T; + const TO_BE_CONCRETE: U; - const SELF_2: Self; - //~^ ERROR interior mutable - //~| HELP consider requiring `Self` to be `Copy` - const ASSOC_2: Self::CopyType; // (no error) + const HAVING_DEFAULT: T = Self::TO_REMAIN_GENERIC; + declare_const!(IN_MACRO: T = Self::TO_REMAIN_GENERIC); } -// we don't lint impl of traits, because an impl has no power to change the interface. -impl Trait<u32> for u64 { - type NonCopyType = u16; +impl<T: ConstDefault> GenericTypes<T, AtomicUsize> for u64 { + const TO_REMAIN_GENERIC: T = T::DEFAULT; + const TO_BE_CONCRETE: AtomicUsize = AtomicUsize::new(11); //~ ERROR interior mutable +} - const ATOMIC: AtomicUsize = AtomicUsize::new(9); - const INTEGER: u64 = 10; - const STRING: String = String::new(); - const SELF: Self = 11; - const INPUT: u32 = 12; - const ASSOC: Self::NonCopyType = 13; +// a helper type used below +struct Wrapper<T>(T); + +// a constant whose type is an associated type should be linted at the implementation site, too. +trait AssocTypes { + type ToBeFrozen; + type ToBeUnfrozen; + type ToBeGenericParam; + + const TO_BE_FROZEN: Self::ToBeFrozen; + const TO_BE_UNFROZEN: Self::ToBeUnfrozen; + const WRAPPED_TO_BE_UNFROZEN: Wrapper<Self::ToBeUnfrozen>; + // to ensure it can handle things when a generic type remains after normalization. + const WRAPPED_TO_BE_GENERIC_PARAM: Wrapper<Self::ToBeGenericParam>; } -struct Local<T, U>(T, U); +impl<T: ConstDefault> AssocTypes for Vec<T> { + type ToBeFrozen = u16; + type ToBeUnfrozen = AtomicUsize; + type ToBeGenericParam = T; + + const TO_BE_FROZEN: Self::ToBeFrozen = 12; + const TO_BE_UNFROZEN: Self::ToBeUnfrozen = AtomicUsize::new(13); //~ ERROR interior mutable + const WRAPPED_TO_BE_UNFROZEN: Wrapper<Self::ToBeUnfrozen> = Wrapper(AtomicUsize::new(14)); //~ ERROR interior mutable + const WRAPPED_TO_BE_GENERIC_PARAM: Wrapper<Self::ToBeGenericParam> = Wrapper(T::DEFAULT); +} + +// a helper trait used below +trait AssocTypesHelper { + type NotToBeBounded; + type ToBeBounded; + + const NOT_TO_BE_BOUNDED: Self::NotToBeBounded; +} -impl<T: Trait2 + Trait<u32>, U: Trait2> Local<T, U> { - const ASSOC_3: AtomicUsize = AtomicUsize::new(14); //~ ERROR interior mutable +// a constant whose type is an assoc type originated from a generic param bounded at the definition +// site should be linted at there. +trait AssocTypesFromGenericParam<T> +where + T: AssocTypesHelper<ToBeBounded = AtomicUsize>, +{ + const NOT_BOUNDED: T::NotToBeBounded; + const BOUNDED: T::ToBeBounded; //~ ERROR interior mutable +} + +impl<T> AssocTypesFromGenericParam<T> for u64 +where + T: AssocTypesHelper<ToBeBounded = AtomicUsize>, +{ + // an associated type could remain unknown in a trait impl. + const NOT_BOUNDED: T::NotToBeBounded = T::NOT_TO_BE_BOUNDED; + const BOUNDED: T::ToBeBounded = AtomicUsize::new(15); +} + +// a constant whose type is `Self` should be linted at the implementation site as well. +// (`Option` requires `Sized` bound.) +trait SelfType: Sized { + const SELF: Self; + // this was the one in the original issue (#5050). + const WRAPPED_SELF: Option<Self>; +} + +impl SelfType for u64 { + const SELF: Self = 16; + const WRAPPED_SELF: Option<Self> = Some(20); +} + +impl SelfType for AtomicUsize { + // this (interior mutable `Self` const) exists in `parking_lot`. + // `const_trait_impl` will replace it in the future, hopefully. + const SELF: Self = AtomicUsize::new(17); //~ ERROR interior mutable + const WRAPPED_SELF: Option<Self> = Some(AtomicUsize::new(21)); //~ ERROR interior mutable +} + +// Even though a constant contains a generic type, if it also have a interior mutable type, +// it should be linted at the definition site. +trait BothOfCellAndGeneric<T> { + // this is a false negative in the current implementation. + const DIRECT: Cell<T>; + const INDIRECT: Cell<*const T>; //~ ERROR interior mutable +} + +impl<T: ConstDefault> BothOfCellAndGeneric<T> for u64 { + const DIRECT: Cell<T> = Cell::new(T::DEFAULT); + const INDIRECT: Cell<*const T> = Cell::new(std::ptr::null()); +} + +struct Local<T>(T); + +// a constant in an inherent impl are essentially the same as a normal const item +// except there can be a generic or associated type. +impl<T> Local<T> +where + T: ConstDefault + AssocTypesHelper<ToBeBounded = AtomicUsize>, +{ + const ATOMIC: AtomicUsize = AtomicUsize::new(18); //~ ERROR interior mutable const COW: Cow<'static, str> = Cow::Borrowed("tuvwxy"); - const T_SELF: T = T::SELF_2; - const U_SELF: U = U::SELF_2; - //~^ ERROR interior mutable - //~| HELP consider requiring `U` to be `Copy` - const T_ASSOC: T::NonCopyType = T::ASSOC; - //~^ ERROR interior mutable - //~| HELP consider requiring `<T as Trait<u32>>::NonCopyType` to be `Copy` - const U_ASSOC: U::CopyType = U::ASSOC_2; + + const GENERIC_TYPE: T = T::DEFAULT; + + const ASSOC_TYPE: T::NotToBeBounded = T::NOT_TO_BE_BOUNDED; + const BOUNDED_ASSOC_TYPE: T::ToBeBounded = AtomicUsize::new(19); //~ ERROR interior mutable } fn main() {} diff --git a/src/tools/clippy/tests/ui/declare_interior_mutable_const.stderr b/src/tools/clippy/tests/ui/declare_interior_mutable_const.stderr index 6a9a57361f9..5cb10be88d8 100644 --- a/src/tools/clippy/tests/ui/declare_interior_mutable_const.stderr +++ b/src/tools/clippy/tests/ui/declare_interior_mutable_const.stderr @@ -36,75 +36,75 @@ LL | declare_const!(_ONCE: Once = Once::new()); //~ ERROR interior mutable = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:40:5 + --> $DIR/declare_interior_mutable_const.rs:39:5 | LL | const ATOMIC: AtomicUsize; //~ ERROR interior mutable | ^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:44:5 + --> $DIR/declare_interior_mutable_const.rs:16:9 + | +LL | const $name: $ty = $e; + | ^^^^^^^^^^^^^^^^^^^^^^ +... +LL | declare_const!(ANOTHER_ATOMIC: AtomicUsize = Self::ATOMIC); //~ ERROR interior mutable + | ----------------------------------------------------------- in this macro invocation | -LL | const INPUT: T; - | ^^^^^^^^^^^^^-^ - | | - | consider requiring `T` to be `Copy` + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:47:5 + --> $DIR/declare_interior_mutable_const.rs:67:5 | -LL | const ASSOC: Self::NonCopyType; - | ^^^^^^^^^^^^^-----------------^ - | | - | consider requiring `<Self as Trait<T>>::NonCopyType` to be `Copy` +LL | const TO_BE_CONCRETE: AtomicUsize = AtomicUsize::new(11); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:51:5 + --> $DIR/declare_interior_mutable_const.rs:92:5 | -LL | const AN_INPUT: T = Self::INPUT; - | ^^^^^^^^^^^^^^^^-^^^^^^^^^^^^^^^ - | | - | consider requiring `T` to be `Copy` +LL | const TO_BE_UNFROZEN: Self::ToBeUnfrozen = AtomicUsize::new(13); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:16:9 + --> $DIR/declare_interior_mutable_const.rs:93:5 | -LL | const $name: $ty = $e; - | ^^^^^^^^^^^^^^^^^^^^^^ -... -LL | declare_const!(ANOTHER_INPUT: T = Self::INPUT); //~ ERROR interior mutable - | ----------------------------------------------- in this macro invocation +LL | const WRAPPED_TO_BE_UNFROZEN: Wrapper<Self::ToBeUnfrozen> = Wrapper(AtomicUsize::new(14)); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: a `const` item should never be interior mutable + --> $DIR/declare_interior_mutable_const.rs:112:5 | - = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) +LL | const BOUNDED: T::ToBeBounded; //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: a `const` item should never be interior mutable + --> $DIR/declare_interior_mutable_const.rs:140:5 + | +LL | const SELF: Self = AtomicUsize::new(17); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:60:5 + --> $DIR/declare_interior_mutable_const.rs:141:5 | -LL | const SELF_2: Self; - | ^^^^^^^^^^^^^^----^ - | | - | consider requiring `Self` to be `Copy` +LL | const WRAPPED_SELF: Option<Self> = Some(AtomicUsize::new(21)); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:81:5 + --> $DIR/declare_interior_mutable_const.rs:149:5 | -LL | const ASSOC_3: AtomicUsize = AtomicUsize::new(14); //~ ERROR interior mutable - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | const INDIRECT: Cell<*const T>; //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:84:5 + --> $DIR/declare_interior_mutable_const.rs:165:5 | -LL | const U_SELF: U = U::SELF_2; - | ^^^^^^^^^^^^^^-^^^^^^^^^^^^^ - | | - | consider requiring `U` to be `Copy` +LL | const ATOMIC: AtomicUsize = AtomicUsize::new(18); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: a `const` item should never be interior mutable - --> $DIR/declare_interior_mutable_const.rs:87:5 + --> $DIR/declare_interior_mutable_const.rs:171:5 | -LL | const T_ASSOC: T::NonCopyType = T::ASSOC; - | ^^^^^^^^^^^^^^^--------------^^^^^^^^^^^^ - | | - | consider requiring `<T as Trait<u32>>::NonCopyType` to be `Copy` +LL | const BOUNDED_ASSOC_TYPE: T::ToBeBounded = AtomicUsize::new(19); //~ ERROR interior mutable + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 13 previous errors +error: aborting due to 15 previous errors diff --git a/src/tools/clippy/tests/ui/drop_ref.rs b/src/tools/clippy/tests/ui/drop_ref.rs index 9181d789d4f..6b5bcdaa78e 100644 --- a/src/tools/clippy/tests/ui/drop_ref.rs +++ b/src/tools/clippy/tests/ui/drop_ref.rs @@ -1,5 +1,6 @@ #![warn(clippy::drop_ref)] #![allow(clippy::toplevel_ref_arg)] +#![allow(clippy::map_err_ignore)] use std::mem::drop; diff --git a/src/tools/clippy/tests/ui/drop_ref.stderr b/src/tools/clippy/tests/ui/drop_ref.stderr index 35ae88b78a4..7974bf56d44 100644 --- a/src/tools/clippy/tests/ui/drop_ref.stderr +++ b/src/tools/clippy/tests/ui/drop_ref.stderr @@ -1,108 +1,108 @@ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:9:5 + --> $DIR/drop_ref.rs:10:5 | LL | drop(&SomeStruct); | ^^^^^^^^^^^^^^^^^ | = note: `-D clippy::drop-ref` implied by `-D warnings` note: argument has type `&SomeStruct` - --> $DIR/drop_ref.rs:9:10 + --> $DIR/drop_ref.rs:10:10 | LL | drop(&SomeStruct); | ^^^^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:12:5 + --> $DIR/drop_ref.rs:13:5 | LL | drop(&owned1); | ^^^^^^^^^^^^^ | note: argument has type `&SomeStruct` - --> $DIR/drop_ref.rs:12:10 + --> $DIR/drop_ref.rs:13:10 | LL | drop(&owned1); | ^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:13:5 + --> $DIR/drop_ref.rs:14:5 | LL | drop(&&owned1); | ^^^^^^^^^^^^^^ | note: argument has type `&&SomeStruct` - --> $DIR/drop_ref.rs:13:10 + --> $DIR/drop_ref.rs:14:10 | LL | drop(&&owned1); | ^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:14:5 + --> $DIR/drop_ref.rs:15:5 | LL | drop(&mut owned1); | ^^^^^^^^^^^^^^^^^ | note: argument has type `&mut SomeStruct` - --> $DIR/drop_ref.rs:14:10 + --> $DIR/drop_ref.rs:15:10 | LL | drop(&mut owned1); | ^^^^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:18:5 + --> $DIR/drop_ref.rs:19:5 | LL | drop(reference1); | ^^^^^^^^^^^^^^^^ | note: argument has type `&SomeStruct` - --> $DIR/drop_ref.rs:18:10 + --> $DIR/drop_ref.rs:19:10 | LL | drop(reference1); | ^^^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:21:5 + --> $DIR/drop_ref.rs:22:5 | LL | drop(reference2); | ^^^^^^^^^^^^^^^^ | note: argument has type `&mut SomeStruct` - --> $DIR/drop_ref.rs:21:10 + --> $DIR/drop_ref.rs:22:10 | LL | drop(reference2); | ^^^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:24:5 + --> $DIR/drop_ref.rs:25:5 | LL | drop(reference3); | ^^^^^^^^^^^^^^^^ | note: argument has type `&SomeStruct` - --> $DIR/drop_ref.rs:24:10 + --> $DIR/drop_ref.rs:25:10 | LL | drop(reference3); | ^^^^^^^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:29:5 + --> $DIR/drop_ref.rs:30:5 | LL | drop(&val); | ^^^^^^^^^^ | note: argument has type `&T` - --> $DIR/drop_ref.rs:29:10 + --> $DIR/drop_ref.rs:30:10 | LL | drop(&val); | ^^^^ error: calls to `std::mem::drop` with a reference instead of an owned value. Dropping a reference does nothing. - --> $DIR/drop_ref.rs:37:5 + --> $DIR/drop_ref.rs:38:5 | LL | std::mem::drop(&SomeStruct); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: argument has type `&SomeStruct` - --> $DIR/drop_ref.rs:37:20 + --> $DIR/drop_ref.rs:38:20 | LL | std::mem::drop(&SomeStruct); | ^^^^^^^^^^^ diff --git a/src/tools/clippy/tests/ui/float_cmp.stderr b/src/tools/clippy/tests/ui/float_cmp.stderr index 2d454e8e70d..f7c380fc915 100644 --- a/src/tools/clippy/tests/ui/float_cmp.stderr +++ b/src/tools/clippy/tests/ui/float_cmp.stderr @@ -2,34 +2,34 @@ error: strict comparison of `f32` or `f64` --> $DIR/float_cmp.rs:65:5 | LL | ONE as f64 != 2.0; - | ^^^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(ONE as f64 - 2.0).abs() > error` + | ^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE as f64 - 2.0).abs() > error_margin` | = note: `-D clippy::float-cmp` implied by `-D warnings` - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` --> $DIR/float_cmp.rs:70:5 | LL | x == 1.0; - | ^^^^^^^^ help: consider comparing them within some error: `(x - 1.0).abs() < error` + | ^^^^^^^^ help: consider comparing them within some margin of error: `(x - 1.0).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` --> $DIR/float_cmp.rs:73:5 | LL | twice(x) != twice(ONE as f64); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(twice(x) - twice(ONE as f64)).abs() > error` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(twice(x) - twice(ONE as f64)).abs() > error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` --> $DIR/float_cmp.rs:93:5 | LL | NON_ZERO_ARRAY[i] == NON_ZERO_ARRAY[j]; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(NON_ZERO_ARRAY[i] - NON_ZERO_ARRAY[j]).abs() < error` + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(NON_ZERO_ARRAY[i] - NON_ZERO_ARRAY[j]).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` arrays --> $DIR/float_cmp.rs:98:5 @@ -37,15 +37,15 @@ error: strict comparison of `f32` or `f64` arrays LL | a1 == a2; | ^^^^^^^^ | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` --> $DIR/float_cmp.rs:99:5 | LL | a1[0] == a2[0]; - | ^^^^^^^^^^^^^^ help: consider comparing them within some error: `(a1[0] - a2[0]).abs() < error` + | ^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(a1[0] - a2[0]).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/float_cmp_const.stderr b/src/tools/clippy/tests/ui/float_cmp_const.stderr index 19dc4a284b7..5d0455363e8 100644 --- a/src/tools/clippy/tests/ui/float_cmp_const.stderr +++ b/src/tools/clippy/tests/ui/float_cmp_const.stderr @@ -2,58 +2,58 @@ error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:20:5 | LL | 1f32 == ONE; - | ^^^^^^^^^^^ help: consider comparing them within some error: `(1f32 - ONE).abs() < error` + | ^^^^^^^^^^^ help: consider comparing them within some margin of error: `(1f32 - ONE).abs() < error_margin` | = note: `-D clippy::float-cmp-const` implied by `-D warnings` - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:21:5 | LL | TWO == ONE; - | ^^^^^^^^^^ help: consider comparing them within some error: `(TWO - ONE).abs() < error` + | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:22:5 | LL | TWO != ONE; - | ^^^^^^^^^^ help: consider comparing them within some error: `(TWO - ONE).abs() > error` + | ^^^^^^^^^^ help: consider comparing them within some margin of error: `(TWO - ONE).abs() > error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:23:5 | LL | ONE + ONE == TWO; - | ^^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(ONE + ONE - TWO).abs() < error` + | ^^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(ONE + ONE - TWO).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:25:5 | LL | x as f32 == ONE; - | ^^^^^^^^^^^^^^^ help: consider comparing them within some error: `(x as f32 - ONE).abs() < error` + | ^^^^^^^^^^^^^^^ help: consider comparing them within some margin of error: `(x as f32 - ONE).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:28:5 | LL | v == ONE; - | ^^^^^^^^ help: consider comparing them within some error: `(v - ONE).abs() < error` + | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() < error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant --> $DIR/float_cmp_const.rs:29:5 | LL | v != ONE; - | ^^^^^^^^ help: consider comparing them within some error: `(v - ONE).abs() > error` + | ^^^^^^^^ help: consider comparing them within some margin of error: `(v - ONE).abs() > error_margin` | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: strict comparison of `f32` or `f64` constant arrays --> $DIR/float_cmp_const.rs:61:5 @@ -61,7 +61,7 @@ error: strict comparison of `f32` or `f64` constant arrays LL | NON_ZERO_ARRAY == NON_ZERO_ARRAY2; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error` + = note: `f32::EPSILON` and `f64::EPSILON` are available for the `error_margin` error: aborting due to 8 previous errors diff --git a/src/tools/clippy/tests/ui/indexing_slicing_index.rs b/src/tools/clippy/tests/ui/indexing_slicing_index.rs index 000d5269930..ca8ca53c80c 100644 --- a/src/tools/clippy/tests/ui/indexing_slicing_index.rs +++ b/src/tools/clippy/tests/ui/indexing_slicing_index.rs @@ -15,7 +15,8 @@ fn main() { x[3]; // Ok, should not produce stderr. let y = &x; - y[0]; + y[0]; // Ok, referencing shouldn't affect this lint. See the issue 6021 + y[4]; // Ok, rustc will handle references too. let v = vec![0; 5]; v[0]; diff --git a/src/tools/clippy/tests/ui/indexing_slicing_index.stderr b/src/tools/clippy/tests/ui/indexing_slicing_index.stderr index 2b3f9be2dfb..2f6c9e2f4e5 100644 --- a/src/tools/clippy/tests/ui/indexing_slicing_index.stderr +++ b/src/tools/clippy/tests/ui/indexing_slicing_index.stderr @@ -8,15 +8,7 @@ LL | x[index]; = help: Consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:18:5 - | -LL | y[0]; - | ^^^^ - | - = help: Consider using `.get(n)` or `.get_mut(n)` instead - -error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:21:5 + --> $DIR/indexing_slicing_index.rs:22:5 | LL | v[0]; | ^^^^ @@ -24,7 +16,7 @@ LL | v[0]; = help: Consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:22:5 + --> $DIR/indexing_slicing_index.rs:23:5 | LL | v[10]; | ^^^^^ @@ -32,7 +24,7 @@ LL | v[10]; = help: Consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:23:5 + --> $DIR/indexing_slicing_index.rs:24:5 | LL | v[1 << 3]; | ^^^^^^^^^ @@ -40,7 +32,7 @@ LL | v[1 << 3]; = help: Consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:29:5 + --> $DIR/indexing_slicing_index.rs:30:5 | LL | v[N]; | ^^^^ @@ -48,12 +40,12 @@ LL | v[N]; = help: Consider using `.get(n)` or `.get_mut(n)` instead error: indexing may panic. - --> $DIR/indexing_slicing_index.rs:30:5 + --> $DIR/indexing_slicing_index.rs:31:5 | LL | v[M]; | ^^^^ | = help: Consider using `.get(n)` or `.get_mut(n)` instead -error: aborting due to 7 previous errors +error: aborting due to 6 previous errors diff --git a/src/tools/clippy/tests/ui/indexing_slicing_slice.stderr b/src/tools/clippy/tests/ui/indexing_slicing_slice.stderr index ec6c157ac1a..2231deee833 100644 --- a/src/tools/clippy/tests/ui/indexing_slicing_slice.stderr +++ b/src/tools/clippy/tests/ui/indexing_slicing_slice.stderr @@ -71,29 +71,17 @@ LL | &x[1..][..5]; | = help: Consider using `.get(..n)`or `.get_mut(..n)` instead -error: slicing may panic. - --> $DIR/indexing_slicing_slice.rs:24:6 - | -LL | &y[1..2]; - | ^^^^^^^ - | - = help: Consider using `.get(n..m)` or `.get_mut(n..m)` instead - -error: slicing may panic. - --> $DIR/indexing_slicing_slice.rs:25:6 +error: range is out of bounds + --> $DIR/indexing_slicing_slice.rs:25:12 | LL | &y[0..=4]; - | ^^^^^^^^ - | - = help: Consider using `.get(n..m)` or `.get_mut(n..m)` instead + | ^ -error: slicing may panic. - --> $DIR/indexing_slicing_slice.rs:26:6 +error: range is out of bounds + --> $DIR/indexing_slicing_slice.rs:26:11 | LL | &y[..=4]; - | ^^^^^^^ - | - = help: Consider using `.get(..n)`or `.get_mut(..n)` instead + | ^ error: slicing may panic. --> $DIR/indexing_slicing_slice.rs:31:6 @@ -133,5 +121,5 @@ LL | &v[..100]; | = help: Consider using `.get(..n)`or `.get_mut(..n)` instead -error: aborting due to 17 previous errors +error: aborting due to 16 previous errors diff --git a/src/tools/clippy/tests/ui/into_iter_on_ref.stderr b/src/tools/clippy/tests/ui/into_iter_on_ref.stderr index 1cd6400b019..28003b365bb 100644 --- a/src/tools/clippy/tests/ui/into_iter_on_ref.stderr +++ b/src/tools/clippy/tests/ui/into_iter_on_ref.stderr @@ -1,4 +1,4 @@ -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `Vec` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec` --> $DIR/into_iter_on_ref.rs:14:30 | LL | let _ = (&vec![1, 2, 3]).into_iter(); //~ WARN equivalent to .iter() @@ -6,157 +6,157 @@ LL | let _ = (&vec![1, 2, 3]).into_iter(); //~ WARN equivalent to .iter() | = note: `-D clippy::into-iter-on-ref` implied by `-D warnings` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `slice` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice` --> $DIR/into_iter_on_ref.rs:15:46 | LL | let _ = vec![1, 2, 3].into_boxed_slice().into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `slice` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice` --> $DIR/into_iter_on_ref.rs:16:41 | LL | let _ = std::rc::Rc::from(&[X][..]).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `slice` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `slice` --> $DIR/into_iter_on_ref.rs:17:44 | LL | let _ = std::sync::Arc::from(&[X][..]).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `array` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `array` --> $DIR/into_iter_on_ref.rs:19:32 | LL | let _ = (&&&&&&&[1, 2, 3]).into_iter(); //~ ERROR equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `array` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `array` --> $DIR/into_iter_on_ref.rs:20:36 | LL | let _ = (&&&&mut &&&[1, 2, 3]).into_iter(); //~ ERROR equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `array` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `array` --> $DIR/into_iter_on_ref.rs:21:40 | LL | let _ = (&mut &mut &mut [1, 2, 3]).into_iter(); //~ ERROR equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `Option` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Option` --> $DIR/into_iter_on_ref.rs:23:24 | LL | let _ = (&Some(4)).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `Option` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `Option` --> $DIR/into_iter_on_ref.rs:24:28 | LL | let _ = (&mut Some(5)).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `Result` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Result` --> $DIR/into_iter_on_ref.rs:25:32 | LL | let _ = (&Ok::<_, i32>(6)).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `Result` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `Result` --> $DIR/into_iter_on_ref.rs:26:37 | LL | let _ = (&mut Err::<i32, _>(7)).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `Vec` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Vec` --> $DIR/into_iter_on_ref.rs:27:34 | LL | let _ = (&Vec::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `Vec` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `Vec` --> $DIR/into_iter_on_ref.rs:28:38 | LL | let _ = (&mut Vec::<i32>::new()).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `BTreeMap` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `BTreeMap` --> $DIR/into_iter_on_ref.rs:29:44 | LL | let _ = (&BTreeMap::<i32, u64>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `BTreeMap` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `BTreeMap` --> $DIR/into_iter_on_ref.rs:30:48 | LL | let _ = (&mut BTreeMap::<i32, u64>::new()).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `VecDeque` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `VecDeque` --> $DIR/into_iter_on_ref.rs:31:39 | LL | let _ = (&VecDeque::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `VecDeque` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `VecDeque` --> $DIR/into_iter_on_ref.rs:32:43 | LL | let _ = (&mut VecDeque::<i32>::new()).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `LinkedList` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `LinkedList` --> $DIR/into_iter_on_ref.rs:33:41 | LL | let _ = (&LinkedList::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `LinkedList` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `LinkedList` --> $DIR/into_iter_on_ref.rs:34:45 | LL | let _ = (&mut LinkedList::<i32>::new()).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `HashMap` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `HashMap` --> $DIR/into_iter_on_ref.rs:35:43 | LL | let _ = (&HashMap::<i32, u64>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not move the `HashMap` +error: this `.into_iter()` call is equivalent to `.iter_mut()` and will not consume the `HashMap` --> $DIR/into_iter_on_ref.rs:36:47 | LL | let _ = (&mut HashMap::<i32, u64>::new()).into_iter(); //~ WARN equivalent to .iter_mut() | ^^^^^^^^^ help: call directly: `iter_mut` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `BTreeSet` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `BTreeSet` --> $DIR/into_iter_on_ref.rs:38:39 | LL | let _ = (&BTreeSet::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `BinaryHeap` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `BinaryHeap` --> $DIR/into_iter_on_ref.rs:39:41 | LL | let _ = (&BinaryHeap::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `HashSet` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `HashSet` --> $DIR/into_iter_on_ref.rs:40:38 | LL | let _ = (&HashSet::<i32>::new()).into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `Path` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `Path` --> $DIR/into_iter_on_ref.rs:41:43 | LL | let _ = std::path::Path::new("12/34").into_iter(); //~ WARN equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `PathBuf` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `PathBuf` --> $DIR/into_iter_on_ref.rs:42:47 | LL | let _ = std::path::PathBuf::from("12/34").into_iter(); //~ ERROR equivalent to .iter() | ^^^^^^^^^ help: call directly: `iter` -error: this `.into_iter()` call is equivalent to `.iter()` and will not move the `array` +error: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `array` --> $DIR/into_iter_on_ref.rs:44:26 | LL | let _ = (&[1, 2, 3]).into_iter().next(); //~ WARN equivalent to .iter() diff --git a/src/tools/clippy/tests/ui/let_if_seq.rs b/src/tools/clippy/tests/ui/let_if_seq.rs index 802beeb4be6..32a67f181df 100644 --- a/src/tools/clippy/tests/ui/let_if_seq.rs +++ b/src/tools/clippy/tests/ui/let_if_seq.rs @@ -33,6 +33,7 @@ fn issue985_alt() -> i32 { x } +#[allow(clippy::manual_strip)] fn issue975() -> String { let mut udn = "dummy".to_string(); if udn.starts_with("uuid:") { diff --git a/src/tools/clippy/tests/ui/let_if_seq.stderr b/src/tools/clippy/tests/ui/let_if_seq.stderr index c53a63a541b..7de560c7348 100644 --- a/src/tools/clippy/tests/ui/let_if_seq.stderr +++ b/src/tools/clippy/tests/ui/let_if_seq.stderr @@ -1,5 +1,5 @@ error: `if _ { .. } else { .. }` is an expression - --> $DIR/let_if_seq.rs:63:5 + --> $DIR/let_if_seq.rs:64:5 | LL | / let mut foo = 0; LL | | if f() { @@ -11,7 +11,7 @@ LL | | } = note: you might not need `mut` at all error: `if _ { .. } else { .. }` is an expression - --> $DIR/let_if_seq.rs:68:5 + --> $DIR/let_if_seq.rs:69:5 | LL | / let mut bar = 0; LL | | if f() { @@ -25,7 +25,7 @@ LL | | } = note: you might not need `mut` at all error: `if _ { .. } else { .. }` is an expression - --> $DIR/let_if_seq.rs:76:5 + --> $DIR/let_if_seq.rs:77:5 | LL | / let quz; LL | | if f() { @@ -36,7 +36,7 @@ LL | | } | |_____^ help: it is more idiomatic to write: `let quz = if f() { 42 } else { 0 };` error: `if _ { .. } else { .. }` is an expression - --> $DIR/let_if_seq.rs:105:5 + --> $DIR/let_if_seq.rs:106:5 | LL | / let mut baz = 0; LL | | if f() { diff --git a/src/tools/clippy/tests/ui/manual_strip.rs b/src/tools/clippy/tests/ui/manual_strip.rs new file mode 100644 index 00000000000..cbb84eb5c7e --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_strip.rs @@ -0,0 +1,66 @@ +#![warn(clippy::manual_strip)] + +fn main() { + let s = "abc"; + + if s.starts_with("ab") { + str::to_string(&s["ab".len()..]); + s["ab".len()..].to_string(); + + str::to_string(&s[2..]); + s[2..].to_string(); + } + + if s.ends_with("bc") { + str::to_string(&s[..s.len() - "bc".len()]); + s[..s.len() - "bc".len()].to_string(); + + str::to_string(&s[..s.len() - 2]); + s[..s.len() - 2].to_string(); + } + + // Character patterns + if s.starts_with('a') { + str::to_string(&s[1..]); + s[1..].to_string(); + } + + // Variable prefix + let prefix = "ab"; + if s.starts_with(prefix) { + str::to_string(&s[prefix.len()..]); + } + + // Constant prefix + const PREFIX: &str = "ab"; + if s.starts_with(PREFIX) { + str::to_string(&s[PREFIX.len()..]); + str::to_string(&s[2..]); + } + + // Constant target + const TARGET: &str = "abc"; + if TARGET.starts_with(prefix) { + str::to_string(&TARGET[prefix.len()..]); + } + + // String target - not mutated. + let s1: String = "abc".into(); + if s1.starts_with("ab") { + s1[2..].to_uppercase(); + } + + // String target - mutated. (Don't lint.) + let mut s2: String = "abc".into(); + if s2.starts_with("ab") { + s2.push('d'); + s2[2..].to_uppercase(); + } + + // Target not stripped. (Don't lint.) + let s3 = String::from("abcd"); + let s4 = String::from("efgh"); + if s3.starts_with("ab") { + s4[2..].to_string(); + } +} diff --git a/src/tools/clippy/tests/ui/manual_strip.stderr b/src/tools/clippy/tests/ui/manual_strip.stderr new file mode 100644 index 00000000000..1352a8713d4 --- /dev/null +++ b/src/tools/clippy/tests/ui/manual_strip.stderr @@ -0,0 +1,132 @@ +error: stripping a prefix manually + --> $DIR/manual_strip.rs:7:24 + | +LL | str::to_string(&s["ab".len()..]); + | ^^^^^^^^^^^^^^^^ + | + = note: `-D clippy::manual-strip` implied by `-D warnings` +note: the prefix was tested here + --> $DIR/manual_strip.rs:6:5 + | +LL | if s.starts_with("ab") { + | ^^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = s.strip_prefix("ab") { +LL | str::to_string(<stripped>); +LL | <stripped>.to_string(); +LL | +LL | str::to_string(<stripped>); +LL | <stripped>.to_string(); + | + +error: stripping a suffix manually + --> $DIR/manual_strip.rs:15:24 + | +LL | str::to_string(&s[..s.len() - "bc".len()]); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +note: the suffix was tested here + --> $DIR/manual_strip.rs:14:5 + | +LL | if s.ends_with("bc") { + | ^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_suffix` method + | +LL | if let Some(<stripped>) = s.strip_suffix("bc") { +LL | str::to_string(<stripped>); +LL | <stripped>.to_string(); +LL | +LL | str::to_string(<stripped>); +LL | <stripped>.to_string(); + | + +error: stripping a prefix manually + --> $DIR/manual_strip.rs:24:24 + | +LL | str::to_string(&s[1..]); + | ^^^^^^^ + | +note: the prefix was tested here + --> $DIR/manual_strip.rs:23:5 + | +LL | if s.starts_with('a') { + | ^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = s.strip_prefix('a') { +LL | str::to_string(<stripped>); +LL | <stripped>.to_string(); + | + +error: stripping a prefix manually + --> $DIR/manual_strip.rs:31:24 + | +LL | str::to_string(&s[prefix.len()..]); + | ^^^^^^^^^^^^^^^^^^ + | +note: the prefix was tested here + --> $DIR/manual_strip.rs:30:5 + | +LL | if s.starts_with(prefix) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = s.strip_prefix(prefix) { +LL | str::to_string(<stripped>); + | + +error: stripping a prefix manually + --> $DIR/manual_strip.rs:37:24 + | +LL | str::to_string(&s[PREFIX.len()..]); + | ^^^^^^^^^^^^^^^^^^ + | +note: the prefix was tested here + --> $DIR/manual_strip.rs:36:5 + | +LL | if s.starts_with(PREFIX) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = s.strip_prefix(PREFIX) { +LL | str::to_string(<stripped>); +LL | str::to_string(<stripped>); + | + +error: stripping a prefix manually + --> $DIR/manual_strip.rs:44:24 + | +LL | str::to_string(&TARGET[prefix.len()..]); + | ^^^^^^^^^^^^^^^^^^^^^^^ + | +note: the prefix was tested here + --> $DIR/manual_strip.rs:43:5 + | +LL | if TARGET.starts_with(prefix) { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = TARGET.strip_prefix(prefix) { +LL | str::to_string(<stripped>); + | + +error: stripping a prefix manually + --> $DIR/manual_strip.rs:50:9 + | +LL | s1[2..].to_uppercase(); + | ^^^^^^^ + | +note: the prefix was tested here + --> $DIR/manual_strip.rs:49:5 + | +LL | if s1.starts_with("ab") { + | ^^^^^^^^^^^^^^^^^^^^^^^^ +help: try using the `strip_prefix` method + | +LL | if let Some(<stripped>) = s1.strip_prefix("ab") { +LL | <stripped>.to_uppercase(); + | + +error: aborting due to 7 previous errors + diff --git a/src/tools/clippy/tests/ui/map_err.rs b/src/tools/clippy/tests/ui/map_err.rs new file mode 100644 index 00000000000..617b6422872 --- /dev/null +++ b/src/tools/clippy/tests/ui/map_err.rs @@ -0,0 +1,25 @@ +#![warn(clippy::map_err_ignore)] +use std::convert::TryFrom; +use std::error::Error; +use std::fmt; + +#[derive(Debug)] +enum Errors { + Ignored, +} + +impl Error for Errors {} + +impl fmt::Display for Errors { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "Error") + } +} + +fn main() -> Result<(), Errors> { + let x = u32::try_from(-123_i32); + + println!("{:?}", x.map_err(|_| Errors::Ignored)); + + Ok(()) +} diff --git a/src/tools/clippy/tests/ui/map_err.stderr b/src/tools/clippy/tests/ui/map_err.stderr new file mode 100644 index 00000000000..7273f460380 --- /dev/null +++ b/src/tools/clippy/tests/ui/map_err.stderr @@ -0,0 +1,11 @@ +error: `map_err(|_|...` ignores the original error + --> $DIR/map_err.rs:22:32 + | +LL | println!("{:?}", x.map_err(|_| Errors::Ignored)); + | ^^^ + | + = note: `-D clippy::map-err-ignore` implied by `-D warnings` + = help: Consider wrapping the error in an enum variant + +error: aborting due to previous error + diff --git a/src/tools/clippy/tests/ui/match_type_on_diag_item.rs b/src/tools/clippy/tests/ui/match_type_on_diag_item.rs new file mode 100644 index 00000000000..fe950b0aa7c --- /dev/null +++ b/src/tools/clippy/tests/ui/match_type_on_diag_item.rs @@ -0,0 +1,50 @@ +#![deny(clippy::internal)] +#![feature(rustc_private)] + +extern crate rustc_hir; +extern crate rustc_lint; +extern crate rustc_middle; +#[macro_use] +extern crate rustc_session; +use rustc_hir::Expr; +use rustc_lint::{LateContext, LateLintPass}; +use rustc_middle::ty::Ty; + +mod paths { + pub const VEC: [&str; 3] = ["alloc", "vec", "Vec"]; +} + +mod utils { + use super::*; + + pub fn match_type(_cx: &LateContext<'_>, _ty: Ty<'_>, _path: &[&str]) -> bool { + false + } +} + +use utils::match_type; + +declare_lint! { + pub TEST_LINT, + Warn, + "" +} + +declare_lint_pass!(Pass => [TEST_LINT]); + +static OPTION: [&str; 3] = ["core", "option", "Option"]; + +impl<'tcx> LateLintPass<'tcx> for Pass { + fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr) { + let ty = cx.typeck_results().expr_ty(expr); + + let _ = match_type(cx, ty, &paths::VEC); + let _ = match_type(cx, ty, &OPTION); + let _ = match_type(cx, ty, &["core", "result", "Result"]); + + let rc_path = &["alloc", "rc", "Rc"]; + let _ = utils::match_type(cx, ty, rc_path); + } +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/match_type_on_diag_item.stderr b/src/tools/clippy/tests/ui/match_type_on_diag_item.stderr new file mode 100644 index 00000000000..5e5fe9e3a3e --- /dev/null +++ b/src/tools/clippy/tests/ui/match_type_on_diag_item.stderr @@ -0,0 +1,33 @@ +error: usage of `utils::match_type()` on a type diagnostic item + --> $DIR/match_type_on_diag_item.rs:41:17 + | +LL | let _ = match_type(cx, ty, &paths::VEC); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `utils::is_type_diagnostic_item(cx, ty, sym!(vec_type))` + | +note: the lint level is defined here + --> $DIR/match_type_on_diag_item.rs:1:9 + | +LL | #![deny(clippy::internal)] + | ^^^^^^^^^^^^^^^^ + = note: `#[deny(clippy::match_type_on_diagnostic_item)]` implied by `#[deny(clippy::internal)]` + +error: usage of `utils::match_type()` on a type diagnostic item + --> $DIR/match_type_on_diag_item.rs:42:17 + | +LL | let _ = match_type(cx, ty, &OPTION); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `utils::is_type_diagnostic_item(cx, ty, sym!(option_type))` + +error: usage of `utils::match_type()` on a type diagnostic item + --> $DIR/match_type_on_diag_item.rs:43:17 + | +LL | let _ = match_type(cx, ty, &["core", "result", "Result"]); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `utils::is_type_diagnostic_item(cx, ty, sym!(result_type))` + +error: usage of `utils::match_type()` on a type diagnostic item + --> $DIR/match_type_on_diag_item.rs:46:17 + | +LL | let _ = utils::match_type(cx, ty, rc_path); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `utils::is_type_diagnostic_item(cx, ty, sym!(Rc))` + +error: aborting due to 4 previous errors + diff --git a/src/tools/clippy/tests/ui/option_if_let_else.fixed b/src/tools/clippy/tests/ui/option_if_let_else.fixed index 695a460cc4e..a7fb00a2705 100644 --- a/src/tools/clippy/tests/ui/option_if_let_else.fixed +++ b/src/tools/clippy/tests/ui/option_if_let_else.fixed @@ -1,5 +1,6 @@ // run-rustfix #![warn(clippy::option_if_let_else)] +#![allow(clippy::redundant_closure)] fn bad1(string: Option<&str>) -> (bool, &str) { string.map_or((false, "hello"), |x| (true, x)) @@ -36,6 +37,14 @@ fn longer_body(arg: Option<u32>) -> u32 { }) } +fn impure_else(arg: Option<i32>) { + let side_effect = || { + println!("return 1"); + 1 + }; + let _ = arg.map_or_else(|| side_effect(), |x| x); +} + fn test_map_or_else(arg: Option<u32>) { let _ = arg.map_or_else(|| { let mut y = 1; @@ -71,4 +80,5 @@ fn main() { let _ = longer_body(None); test_map_or_else(None); let _ = negative_tests(None); + let _ = impure_else(None); } diff --git a/src/tools/clippy/tests/ui/option_if_let_else.rs b/src/tools/clippy/tests/ui/option_if_let_else.rs index dee80d26bd9..895fd86321f 100644 --- a/src/tools/clippy/tests/ui/option_if_let_else.rs +++ b/src/tools/clippy/tests/ui/option_if_let_else.rs @@ -1,5 +1,6 @@ // run-rustfix #![warn(clippy::option_if_let_else)] +#![allow(clippy::redundant_closure)] fn bad1(string: Option<&str>) -> (bool, &str) { if let Some(x) = string { @@ -52,6 +53,19 @@ fn longer_body(arg: Option<u32>) -> u32 { } } +fn impure_else(arg: Option<i32>) { + let side_effect = || { + println!("return 1"); + 1 + }; + let _ = if let Some(x) = arg { + x + } else { + // map_or_else must be suggested + side_effect() + }; +} + fn test_map_or_else(arg: Option<u32>) { let _ = if let Some(x) = arg { x * x * x * x @@ -89,4 +103,5 @@ fn main() { let _ = longer_body(None); test_map_or_else(None); let _ = negative_tests(None); + let _ = impure_else(None); } diff --git a/src/tools/clippy/tests/ui/option_if_let_else.stderr b/src/tools/clippy/tests/ui/option_if_let_else.stderr index 7005850efaf..b69fe767682 100644 --- a/src/tools/clippy/tests/ui/option_if_let_else.stderr +++ b/src/tools/clippy/tests/ui/option_if_let_else.stderr @@ -1,5 +1,5 @@ error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:5:5 + --> $DIR/option_if_let_else.rs:6:5 | LL | / if let Some(x) = string { LL | | (true, x) @@ -11,7 +11,7 @@ LL | | } = note: `-D clippy::option-if-let-else` implied by `-D warnings` error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:15:12 + --> $DIR/option_if_let_else.rs:16:12 | LL | } else if let Some(x) = string { | ____________^ @@ -22,19 +22,19 @@ LL | | } | |_____^ help: try: `{ string.map_or(Some((false, "")), |x| Some((true, x))) }` error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:23:13 + --> $DIR/option_if_let_else.rs:24:13 | LL | let _ = if let Some(s) = *string { s.len() } else { 0 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `string.map_or(0, |s| s.len())` error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:24:13 + --> $DIR/option_if_let_else.rs:25:13 | LL | let _ = if let Some(s) = &num { s } else { &0 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.as_ref().map_or(&0, |s| s)` error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:25:13 + --> $DIR/option_if_let_else.rs:26:13 | LL | let _ = if let Some(s) = &mut num { | _____________^ @@ -54,13 +54,13 @@ LL | }); | error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:31:13 + --> $DIR/option_if_let_else.rs:32:13 | LL | let _ = if let Some(ref s) = num { s } else { &0 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `num.as_ref().map_or(&0, |s| s)` error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:32:13 + --> $DIR/option_if_let_else.rs:33:13 | LL | let _ = if let Some(mut s) = num { | _____________^ @@ -80,7 +80,7 @@ LL | }); | error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:38:13 + --> $DIR/option_if_let_else.rs:39:13 | LL | let _ = if let Some(ref mut s) = num { | _____________^ @@ -100,7 +100,7 @@ LL | }); | error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:47:5 + --> $DIR/option_if_let_else.rs:48:5 | LL | / if let Some(x) = arg { LL | | let y = x * x; @@ -119,7 +119,19 @@ LL | }) | error: use Option::map_or_else instead of an if let/else - --> $DIR/option_if_let_else.rs:56:13 + --> $DIR/option_if_let_else.rs:61:13 + | +LL | let _ = if let Some(x) = arg { + | _____________^ +LL | | x +LL | | } else { +LL | | // map_or_else must be suggested +LL | | side_effect() +LL | | }; + | |_____^ help: try: `arg.map_or_else(|| side_effect(), |x| x)` + +error: use Option::map_or_else instead of an if let/else + --> $DIR/option_if_let_else.rs:70:13 | LL | let _ = if let Some(x) = arg { | _____________^ @@ -142,10 +154,10 @@ LL | }, |x| x * x * x * x); | error: use Option::map_or instead of an if let/else - --> $DIR/option_if_let_else.rs:85:13 + --> $DIR/option_if_let_else.rs:99:13 | LL | let _ = if let Some(x) = optional { x + 2 } else { 5 }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `optional.map_or(5, |x| x + 2)` -error: aborting due to 11 previous errors +error: aborting due to 12 previous errors diff --git a/src/tools/clippy/tests/ui/panic_in_result_fn.rs b/src/tools/clippy/tests/ui/panic_in_result_fn.rs new file mode 100644 index 00000000000..287726f7a2d --- /dev/null +++ b/src/tools/clippy/tests/ui/panic_in_result_fn.rs @@ -0,0 +1,70 @@ +#![warn(clippy::panic_in_result_fn)] + +struct A; + +impl A { + fn result_with_panic() -> Result<bool, String> // should emit lint + { + panic!("error"); + } + + fn result_with_unimplemented() -> Result<bool, String> // should emit lint + { + unimplemented!(); + } + + fn result_with_unreachable() -> Result<bool, String> // should emit lint + { + unreachable!(); + } + + fn result_with_todo() -> Result<bool, String> // should emit lint + { + todo!("Finish this"); + } + + fn other_with_panic() // should not emit lint + { + panic!(""); + } + + fn other_with_unreachable() // should not emit lint + { + unreachable!(); + } + + fn other_with_unimplemented() // should not emit lint + { + unimplemented!(); + } + + fn other_with_todo() // should not emit lint + { + todo!("finish this") + } + + fn result_without_banned_functions() -> Result<bool, String> // should not emit lint + { + Ok(true) + } +} + +fn function_result_with_panic() -> Result<bool, String> // should emit lint +{ + panic!("error"); +} + +fn todo() { + println!("something"); +} + +fn function_result_with_custom_todo() -> Result<bool, String> // should not emit lint +{ + todo(); + Ok(true) +} + +fn main() -> Result<(), String> { + todo!("finish main method"); + Ok(()) +} diff --git a/src/tools/clippy/tests/ui/panic_in_result_fn.stderr b/src/tools/clippy/tests/ui/panic_in_result_fn.stderr new file mode 100644 index 00000000000..c6936fd8692 --- /dev/null +++ b/src/tools/clippy/tests/ui/panic_in_result_fn.stderr @@ -0,0 +1,105 @@ +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:6:5 + | +LL | / fn result_with_panic() -> Result<bool, String> // should emit lint +LL | | { +LL | | panic!("error"); +LL | | } + | |_____^ + | + = note: `-D clippy::panic-in-result-fn` implied by `-D warnings` + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:8:9 + | +LL | panic!("error"); + | ^^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:11:5 + | +LL | / fn result_with_unimplemented() -> Result<bool, String> // should emit lint +LL | | { +LL | | unimplemented!(); +LL | | } + | |_____^ + | + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:13:9 + | +LL | unimplemented!(); + | ^^^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:16:5 + | +LL | / fn result_with_unreachable() -> Result<bool, String> // should emit lint +LL | | { +LL | | unreachable!(); +LL | | } + | |_____^ + | + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:18:9 + | +LL | unreachable!(); + | ^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:21:5 + | +LL | / fn result_with_todo() -> Result<bool, String> // should emit lint +LL | | { +LL | | todo!("Finish this"); +LL | | } + | |_____^ + | + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:23:9 + | +LL | todo!("Finish this"); + | ^^^^^^^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:52:1 + | +LL | / fn function_result_with_panic() -> Result<bool, String> // should emit lint +LL | | { +LL | | panic!("error"); +LL | | } + | |_^ + | + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:54:5 + | +LL | panic!("error"); + | ^^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: used `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` in a function that returns `Result` + --> $DIR/panic_in_result_fn.rs:67:1 + | +LL | / fn main() -> Result<(), String> { +LL | | todo!("finish main method"); +LL | | Ok(()) +LL | | } + | |_^ + | + = help: `unimplemented!()`, `unreachable!()`, `todo!()` or `panic!()` should not be used in a function that returns `Result` as `Result` is expected to return an error instead of crashing +note: return Err() instead of panicking + --> $DIR/panic_in_result_fn.rs:68:5 + | +LL | todo!("finish main method"); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) + +error: aborting due to 6 previous errors + diff --git a/src/tools/clippy/tests/ui/print_with_newline.rs b/src/tools/clippy/tests/ui/print_with_newline.rs index 3f710540e90..a43a1fc4f52 100644 --- a/src/tools/clippy/tests/ui/print_with_newline.rs +++ b/src/tools/clippy/tests/ui/print_with_newline.rs @@ -9,6 +9,7 @@ fn main() { print!("Hello {}\n", "world"); print!("Hello {} {}\n", "world", "#2"); print!("{}\n", 1265); + print!("\n"); // these are all fine print!(""); diff --git a/src/tools/clippy/tests/ui/print_with_newline.stderr b/src/tools/clippy/tests/ui/print_with_newline.stderr index 05fe88915d6..54b3ad75b31 100644 --- a/src/tools/clippy/tests/ui/print_with_newline.stderr +++ b/src/tools/clippy/tests/ui/print_with_newline.stderr @@ -44,7 +44,18 @@ LL | println!("{}", 1265); | ^^^^^^^ -- error: using `print!()` with a format string that ends in a single newline - --> $DIR/print_with_newline.rs:30:5 + --> $DIR/print_with_newline.rs:12:5 + | +LL | print!("/n"); + | ^^^^^^^^^^^^ + | +help: use `println!` instead + | +LL | println!(); + | ^^^^^^^ -- + +error: using `print!()` with a format string that ends in a single newline + --> $DIR/print_with_newline.rs:31:5 | LL | print!("//n"); // should fail | ^^^^^^^^^^^^^^ @@ -55,7 +66,7 @@ LL | println!("/"); // should fail | ^^^^^^^ -- error: using `print!()` with a format string that ends in a single newline - --> $DIR/print_with_newline.rs:37:5 + --> $DIR/print_with_newline.rs:38:5 | LL | / print!( LL | | " @@ -70,7 +81,7 @@ LL | "" | error: using `print!()` with a format string that ends in a single newline - --> $DIR/print_with_newline.rs:41:5 + --> $DIR/print_with_newline.rs:42:5 | LL | / print!( LL | | r" @@ -85,7 +96,7 @@ LL | r"" | error: using `print!()` with a format string that ends in a single newline - --> $DIR/print_with_newline.rs:49:5 + --> $DIR/print_with_newline.rs:50:5 | LL | print!("/r/n"); //~ ERROR | ^^^^^^^^^^^^^^^ @@ -96,7 +107,7 @@ LL | println!("/r"); //~ ERROR | ^^^^^^^ -- error: using `print!()` with a format string that ends in a single newline - --> $DIR/print_with_newline.rs:50:5 + --> $DIR/print_with_newline.rs:51:5 | LL | print!("foo/rbar/n") // ~ ERROR | ^^^^^^^^^^^^^^^^^^^^ @@ -106,5 +117,5 @@ help: use `println!` instead LL | println!("foo/rbar") // ~ ERROR | ^^^^^^^ -- -error: aborting due to 9 previous errors +error: aborting due to 10 previous errors diff --git a/src/tools/clippy/tests/ui/rc_buffer.rs b/src/tools/clippy/tests/ui/rc_buffer.rs new file mode 100644 index 00000000000..1fa98643936 --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer.rs @@ -0,0 +1,26 @@ +#![warn(clippy::rc_buffer)] + +use std::cell::RefCell; +use std::ffi::OsString; +use std::path::PathBuf; +use std::rc::Rc; + +struct S { + // triggers lint + bad1: Rc<String>, + bad2: Rc<PathBuf>, + bad3: Rc<Vec<u8>>, + bad4: Rc<OsString>, + // does not trigger lint + good1: Rc<RefCell<String>>, +} + +// triggers lint +fn func_bad1(_: Rc<String>) {} +fn func_bad2(_: Rc<PathBuf>) {} +fn func_bad3(_: Rc<Vec<u8>>) {} +fn func_bad4(_: Rc<OsString>) {} +// does not trigger lint +fn func_good1(_: Rc<RefCell<String>>) {} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/rc_buffer.stderr b/src/tools/clippy/tests/ui/rc_buffer.stderr new file mode 100644 index 00000000000..e4cc169af07 --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer.stderr @@ -0,0 +1,52 @@ +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:10:11 + | +LL | bad1: Rc<String>, + | ^^^^^^^^^^ help: try: `Rc<str>` + | + = note: `-D clippy::rc-buffer` implied by `-D warnings` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:11:11 + | +LL | bad2: Rc<PathBuf>, + | ^^^^^^^^^^^ help: try: `Rc<std::path::Path>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:12:11 + | +LL | bad3: Rc<Vec<u8>>, + | ^^^^^^^^^^^ help: try: `Rc<[u8]>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:13:11 + | +LL | bad4: Rc<OsString>, + | ^^^^^^^^^^^^ help: try: `Rc<std::ffi::OsStr>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:19:17 + | +LL | fn func_bad1(_: Rc<String>) {} + | ^^^^^^^^^^ help: try: `Rc<str>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:20:17 + | +LL | fn func_bad2(_: Rc<PathBuf>) {} + | ^^^^^^^^^^^ help: try: `Rc<std::path::Path>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:21:17 + | +LL | fn func_bad3(_: Rc<Vec<u8>>) {} + | ^^^^^^^^^^^ help: try: `Rc<[u8]>` + +error: usage of `Rc<T>` when T is a buffer type + --> $DIR/rc_buffer.rs:22:17 + | +LL | fn func_bad4(_: Rc<OsString>) {} + | ^^^^^^^^^^^^ help: try: `Rc<std::ffi::OsStr>` + +error: aborting due to 8 previous errors + diff --git a/src/tools/clippy/tests/ui/rc_buffer_arc.rs b/src/tools/clippy/tests/ui/rc_buffer_arc.rs new file mode 100644 index 00000000000..5d586584817 --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer_arc.rs @@ -0,0 +1,25 @@ +#![warn(clippy::rc_buffer)] + +use std::ffi::OsString; +use std::path::PathBuf; +use std::sync::{Arc, Mutex}; + +struct S { + // triggers lint + bad1: Arc<String>, + bad2: Arc<PathBuf>, + bad3: Arc<Vec<u8>>, + bad4: Arc<OsString>, + // does not trigger lint + good1: Arc<Mutex<String>>, +} + +// triggers lint +fn func_bad1(_: Arc<String>) {} +fn func_bad2(_: Arc<PathBuf>) {} +fn func_bad3(_: Arc<Vec<u8>>) {} +fn func_bad4(_: Arc<OsString>) {} +// does not trigger lint +fn func_good1(_: Arc<Mutex<String>>) {} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/rc_buffer_arc.stderr b/src/tools/clippy/tests/ui/rc_buffer_arc.stderr new file mode 100644 index 00000000000..8252270d2ac --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer_arc.stderr @@ -0,0 +1,52 @@ +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:9:11 + | +LL | bad1: Arc<String>, + | ^^^^^^^^^^^ help: try: `Arc<str>` + | + = note: `-D clippy::rc-buffer` implied by `-D warnings` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:10:11 + | +LL | bad2: Arc<PathBuf>, + | ^^^^^^^^^^^^ help: try: `Arc<std::path::Path>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:11:11 + | +LL | bad3: Arc<Vec<u8>>, + | ^^^^^^^^^^^^ help: try: `Arc<[u8]>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:12:11 + | +LL | bad4: Arc<OsString>, + | ^^^^^^^^^^^^^ help: try: `Arc<std::ffi::OsStr>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:18:17 + | +LL | fn func_bad1(_: Arc<String>) {} + | ^^^^^^^^^^^ help: try: `Arc<str>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:19:17 + | +LL | fn func_bad2(_: Arc<PathBuf>) {} + | ^^^^^^^^^^^^ help: try: `Arc<std::path::Path>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:20:17 + | +LL | fn func_bad3(_: Arc<Vec<u8>>) {} + | ^^^^^^^^^^^^ help: try: `Arc<[u8]>` + +error: usage of `Arc<T>` when T is a buffer type + --> $DIR/rc_buffer_arc.rs:21:17 + | +LL | fn func_bad4(_: Arc<OsString>) {} + | ^^^^^^^^^^^^^ help: try: `Arc<std::ffi::OsStr>` + +error: aborting due to 8 previous errors + diff --git a/src/tools/clippy/tests/ui/rc_buffer_redefined_string.rs b/src/tools/clippy/tests/ui/rc_buffer_redefined_string.rs new file mode 100644 index 00000000000..5d31a848cf7 --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer_redefined_string.rs @@ -0,0 +1,12 @@ +#![warn(clippy::rc_buffer)] + +use std::rc::Rc; + +struct String; + +struct S { + // does not trigger lint + good1: Rc<String>, +} + +fn main() {} diff --git a/src/tools/clippy/tests/ui/rc_buffer_redefined_string.stderr b/src/tools/clippy/tests/ui/rc_buffer_redefined_string.stderr new file mode 100644 index 00000000000..e69de29bb2d --- /dev/null +++ b/src/tools/clippy/tests/ui/rc_buffer_redefined_string.stderr diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching.fixed b/src/tools/clippy/tests/ui/redundant_pattern_matching.fixed index 8084fdefdc2..fe8f62503b7 100644 --- a/src/tools/clippy/tests/ui/redundant_pattern_matching.fixed +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching.fixed @@ -18,39 +18,14 @@ fn main() { if Err::<i32, i32>(42).is_err() {} - if None::<()>.is_none() {} - - if Some(42).is_some() {} - - if Some(42).is_some() { - foo(); - } else { - bar(); - } - - while Some(42).is_some() {} - - while Some(42).is_none() {} - - while None::<()>.is_none() {} - while Ok::<i32, i32>(10).is_ok() {} while Ok::<i32, i32>(10).is_err() {} - let mut v = vec![1, 2, 3]; - while v.pop().is_some() { - foo(); - } - if Ok::<i32, i32>(42).is_ok() {} if Err::<i32, i32>(42).is_err() {} - if None::<i32>.is_none() {} - - if Some(42).is_some() {} - if let Ok(x) = Ok::<i32, i32>(42) { println!("{}", x); } @@ -63,48 +38,25 @@ fn main() { Err::<i32, i32>(42).is_ok(); - Some(42).is_some(); - - None::<()>.is_none(); - - let _ = None::<()>.is_none(); - let _ = if Ok::<usize, ()>(4).is_ok() { true } else { false }; - let opt = Some(false); - let x = if opt.is_some() { true } else { false }; - takes_bool(x); - issue5504(); issue6067(); + issue6065(); - let _ = if gen_opt().is_some() { + let _ = if gen_res().is_ok() { 1 - } else if gen_opt().is_none() { - 2 - } else if gen_res().is_ok() { - 3 } else if gen_res().is_err() { - 4 + 2 } else { - 5 + 3 }; } -fn gen_opt() -> Option<()> { - None -} - fn gen_res() -> Result<(), ()> { Ok(()) } -fn takes_bool(_: bool) {} - -fn foo() {} - -fn bar() {} - macro_rules! m { () => { Some(42u32) @@ -128,31 +80,30 @@ fn issue5504() { while m!().is_some() {} } +fn issue6065() { + macro_rules! if_let_in_macro { + ($pat:pat, $x:expr) => { + if let Some($pat) = $x {} + }; + } + + // shouldn't be linted + if_let_in_macro!(_, Some(42)); +} + // Methods that are unstable const should not be suggested within a const context, see issue #5697. -// However, in Rust 1.48.0 the methods `is_ok` and `is_err` of `Result`, and `is_some` and `is_none` -// of `Option` were stabilized as const, so the following should be linted. +// However, in Rust 1.48.0 the methods `is_ok` and `is_err` of `Result` were stabilized as const, +// so the following should be linted. const fn issue6067() { if Ok::<i32, i32>(42).is_ok() {} if Err::<i32, i32>(42).is_err() {} - if Some(42).is_some() {} - - if None::<()>.is_none() {} - while Ok::<i32, i32>(10).is_ok() {} while Ok::<i32, i32>(10).is_err() {} - while Some(42).is_some() {} - - while None::<()>.is_none() {} - Ok::<i32, i32>(42).is_ok(); Err::<i32, i32>(42).is_err(); - - Some(42).is_some(); - - None::<()>.is_none(); } diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching.rs b/src/tools/clippy/tests/ui/redundant_pattern_matching.rs index 48a32cb1c7b..09426a6e590 100644 --- a/src/tools/clippy/tests/ui/redundant_pattern_matching.rs +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching.rs @@ -18,39 +18,14 @@ fn main() { if let Err(_) = Err::<i32, i32>(42) {} - if let None = None::<()> {} - - if let Some(_) = Some(42) {} - - if let Some(_) = Some(42) { - foo(); - } else { - bar(); - } - - while let Some(_) = Some(42) {} - - while let None = Some(42) {} - - while let None = None::<()> {} - while let Ok(_) = Ok::<i32, i32>(10) {} while let Err(_) = Ok::<i32, i32>(10) {} - let mut v = vec![1, 2, 3]; - while let Some(_) = v.pop() { - foo(); - } - if Ok::<i32, i32>(42).is_ok() {} if Err::<i32, i32>(42).is_err() {} - if None::<i32>.is_none() {} - - if Some(42).is_some() {} - if let Ok(x) = Ok::<i32, i32>(42) { println!("{}", x); } @@ -75,57 +50,25 @@ fn main() { Err(_) => false, }; - match Some(42) { - Some(_) => true, - None => false, - }; - - match None::<()> { - Some(_) => false, - None => true, - }; - - let _ = match None::<()> { - Some(_) => false, - None => true, - }; - let _ = if let Ok(_) = Ok::<usize, ()>(4) { true } else { false }; - let opt = Some(false); - let x = if let Some(_) = opt { true } else { false }; - takes_bool(x); - issue5504(); issue6067(); + issue6065(); - let _ = if let Some(_) = gen_opt() { + let _ = if let Ok(_) = gen_res() { 1 - } else if let None = gen_opt() { - 2 - } else if let Ok(_) = gen_res() { - 3 } else if let Err(_) = gen_res() { - 4 + 2 } else { - 5 + 3 }; } -fn gen_opt() -> Option<()> { - None -} - fn gen_res() -> Result<(), ()> { Ok(()) } -fn takes_bool(_: bool) {} - -fn foo() {} - -fn bar() {} - macro_rules! m { () => { Some(42u32) @@ -149,26 +92,29 @@ fn issue5504() { while let Some(_) = m!() {} } +fn issue6065() { + macro_rules! if_let_in_macro { + ($pat:pat, $x:expr) => { + if let Some($pat) = $x {} + }; + } + + // shouldn't be linted + if_let_in_macro!(_, Some(42)); +} + // Methods that are unstable const should not be suggested within a const context, see issue #5697. -// However, in Rust 1.48.0 the methods `is_ok` and `is_err` of `Result`, and `is_some` and `is_none` -// of `Option` were stabilized as const, so the following should be linted. +// However, in Rust 1.48.0 the methods `is_ok` and `is_err` of `Result` were stabilized as const, +// so the following should be linted. const fn issue6067() { if let Ok(_) = Ok::<i32, i32>(42) {} if let Err(_) = Err::<i32, i32>(42) {} - if let Some(_) = Some(42) {} - - if let None = None::<()> {} - while let Ok(_) = Ok::<i32, i32>(10) {} while let Err(_) = Ok::<i32, i32>(10) {} - while let Some(_) = Some(42) {} - - while let None = None::<()> {} - match Ok::<i32, i32>(42) { Ok(_) => true, Err(_) => false, @@ -178,14 +124,4 @@ const fn issue6067() { Ok(_) => false, Err(_) => true, }; - - match Some(42) { - Some(_) => true, - None => false, - }; - - match None::<()> { - Some(_) => false, - None => true, - }; } diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching.stderr b/src/tools/clippy/tests/ui/redundant_pattern_matching.stderr index 17185217e89..3473ceea00e 100644 --- a/src/tools/clippy/tests/ui/redundant_pattern_matching.stderr +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching.stderr @@ -18,62 +18,20 @@ error: redundant pattern matching, consider using `is_err()` LL | if let Err(_) = Err::<i32, i32>(42) {} | -------^^^^^^---------------------- help: try this: `if Err::<i32, i32>(42).is_err()` -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:21:12 - | -LL | if let None = None::<()> {} - | -------^^^^------------- help: try this: `if None::<()>.is_none()` - -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:23:12 - | -LL | if let Some(_) = Some(42) {} - | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` - -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:25:12 - | -LL | if let Some(_) = Some(42) { - | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` - -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:31:15 - | -LL | while let Some(_) = Some(42) {} - | ----------^^^^^^^----------- help: try this: `while Some(42).is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:33:15 - | -LL | while let None = Some(42) {} - | ----------^^^^----------- help: try this: `while Some(42).is_none()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:35:15 - | -LL | while let None = None::<()> {} - | ----------^^^^------------- help: try this: `while None::<()>.is_none()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:37:15 + --> $DIR/redundant_pattern_matching.rs:21:15 | LL | while let Ok(_) = Ok::<i32, i32>(10) {} | ----------^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:39:15 + --> $DIR/redundant_pattern_matching.rs:23:15 | LL | while let Err(_) = Ok::<i32, i32>(10) {} | ----------^^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_err()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:42:15 - | -LL | while let Some(_) = v.pop() { - | ----------^^^^^^^---------- help: try this: `while v.pop().is_some()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:58:5 + --> $DIR/redundant_pattern_matching.rs:33:5 | LL | / match Ok::<i32, i32>(42) { LL | | Ok(_) => true, @@ -82,7 +40,7 @@ LL | | }; | |_____^ help: try this: `Ok::<i32, i32>(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:63:5 + --> $DIR/redundant_pattern_matching.rs:38:5 | LL | / match Ok::<i32, i32>(42) { LL | | Ok(_) => false, @@ -91,7 +49,7 @@ LL | | }; | |_____^ help: try this: `Ok::<i32, i32>(42).is_err()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:68:5 + --> $DIR/redundant_pattern_matching.rs:43:5 | LL | / match Err::<i32, i32>(42) { LL | | Ok(_) => false, @@ -100,7 +58,7 @@ LL | | }; | |_____^ help: try this: `Err::<i32, i32>(42).is_err()` error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:73:5 + --> $DIR/redundant_pattern_matching.rs:48:5 | LL | / match Err::<i32, i32>(42) { LL | | Ok(_) => true, @@ -108,144 +66,74 @@ LL | | Err(_) => false, LL | | }; | |_____^ help: try this: `Err::<i32, i32>(42).is_ok()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:78:5 - | -LL | / match Some(42) { -LL | | Some(_) => true, -LL | | None => false, -LL | | }; - | |_____^ help: try this: `Some(42).is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:83:5 - | -LL | / match None::<()> { -LL | | Some(_) => false, -LL | | None => true, -LL | | }; - | |_____^ help: try this: `None::<()>.is_none()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:88:13 - | -LL | let _ = match None::<()> { - | _____________^ -LL | | Some(_) => false, -LL | | None => true, -LL | | }; - | |_____^ help: try this: `None::<()>.is_none()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:93:20 + --> $DIR/redundant_pattern_matching.rs:53:20 | LL | let _ = if let Ok(_) = Ok::<usize, ()>(4) { true } else { false }; | -------^^^^^--------------------- help: try this: `if Ok::<usize, ()>(4).is_ok()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:96:20 - | -LL | let x = if let Some(_) = opt { true } else { false }; - | -------^^^^^^^------ help: try this: `if opt.is_some()` - -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:102:20 - | -LL | let _ = if let Some(_) = gen_opt() { - | -------^^^^^^^------------ help: try this: `if gen_opt().is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:104:19 - | -LL | } else if let None = gen_opt() { - | -------^^^^------------ help: try this: `if gen_opt().is_none()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:106:19 + --> $DIR/redundant_pattern_matching.rs:59:20 | -LL | } else if let Ok(_) = gen_res() { - | -------^^^^^------------ help: try this: `if gen_res().is_ok()` +LL | let _ = if let Ok(_) = gen_res() { + | -------^^^^^------------ help: try this: `if gen_res().is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:108:19 + --> $DIR/redundant_pattern_matching.rs:61:19 | LL | } else if let Err(_) = gen_res() { | -------^^^^^^------------ help: try this: `if gen_res().is_err()` error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:141:19 + --> $DIR/redundant_pattern_matching.rs:84:19 | LL | while let Some(_) = r#try!(result_opt()) {} | ----------^^^^^^^----------------------- help: try this: `while r#try!(result_opt()).is_some()` error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:142:16 + --> $DIR/redundant_pattern_matching.rs:85:16 | LL | if let Some(_) = r#try!(result_opt()) {} | -------^^^^^^^----------------------- help: try this: `if r#try!(result_opt()).is_some()` error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:148:12 + --> $DIR/redundant_pattern_matching.rs:91:12 | LL | if let Some(_) = m!() {} | -------^^^^^^^------- help: try this: `if m!().is_some()` error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:149:15 + --> $DIR/redundant_pattern_matching.rs:92:15 | LL | while let Some(_) = m!() {} | ----------^^^^^^^------- help: try this: `while m!().is_some()` error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:156:12 + --> $DIR/redundant_pattern_matching.rs:110:12 | LL | if let Ok(_) = Ok::<i32, i32>(42) {} | -------^^^^^--------------------- help: try this: `if Ok::<i32, i32>(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:158:12 + --> $DIR/redundant_pattern_matching.rs:112:12 | LL | if let Err(_) = Err::<i32, i32>(42) {} | -------^^^^^^---------------------- help: try this: `if Err::<i32, i32>(42).is_err()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:160:12 - | -LL | if let Some(_) = Some(42) {} - | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:162:12 - | -LL | if let None = None::<()> {} - | -------^^^^------------- help: try this: `if None::<()>.is_none()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:164:15 + --> $DIR/redundant_pattern_matching.rs:114:15 | LL | while let Ok(_) = Ok::<i32, i32>(10) {} | ----------^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:166:15 + --> $DIR/redundant_pattern_matching.rs:116:15 | LL | while let Err(_) = Ok::<i32, i32>(10) {} | ----------^^^^^^--------------------- help: try this: `while Ok::<i32, i32>(10).is_err()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:168:15 - | -LL | while let Some(_) = Some(42) {} - | ----------^^^^^^^----------- help: try this: `while Some(42).is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:170:15 - | -LL | while let None = None::<()> {} - | ----------^^^^------------- help: try this: `while None::<()>.is_none()` - error: redundant pattern matching, consider using `is_ok()` - --> $DIR/redundant_pattern_matching.rs:172:5 + --> $DIR/redundant_pattern_matching.rs:118:5 | LL | / match Ok::<i32, i32>(42) { LL | | Ok(_) => true, @@ -254,7 +142,7 @@ LL | | }; | |_____^ help: try this: `Ok::<i32, i32>(42).is_ok()` error: redundant pattern matching, consider using `is_err()` - --> $DIR/redundant_pattern_matching.rs:177:5 + --> $DIR/redundant_pattern_matching.rs:123:5 | LL | / match Err::<i32, i32>(42) { LL | | Ok(_) => false, @@ -262,23 +150,5 @@ LL | | Err(_) => true, LL | | }; | |_____^ help: try this: `Err::<i32, i32>(42).is_err()` -error: redundant pattern matching, consider using `is_some()` - --> $DIR/redundant_pattern_matching.rs:182:5 - | -LL | / match Some(42) { -LL | | Some(_) => true, -LL | | None => false, -LL | | }; - | |_____^ help: try this: `Some(42).is_some()` - -error: redundant pattern matching, consider using `is_none()` - --> $DIR/redundant_pattern_matching.rs:187:5 - | -LL | / match None::<()> { -LL | | Some(_) => false, -LL | | None => true, -LL | | }; - | |_____^ help: try this: `None::<()>.is_none()` - -error: aborting due to 41 previous errors +error: aborting due to 22 previous errors diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching_option.fixed b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.fixed new file mode 100644 index 00000000000..499b975b2bb --- /dev/null +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.fixed @@ -0,0 +1,85 @@ +// run-rustfix + +#![warn(clippy::all)] +#![warn(clippy::redundant_pattern_matching)] +#![allow( + clippy::unit_arg, + unused_must_use, + clippy::needless_bool, + clippy::match_like_matches_macro, + deprecated +)] + +fn main() { + if None::<()>.is_none() {} + + if Some(42).is_some() {} + + if Some(42).is_some() { + foo(); + } else { + bar(); + } + + while Some(42).is_some() {} + + while Some(42).is_none() {} + + while None::<()>.is_none() {} + + let mut v = vec![1, 2, 3]; + while v.pop().is_some() { + foo(); + } + + if None::<i32>.is_none() {} + + if Some(42).is_some() {} + + Some(42).is_some(); + + None::<()>.is_none(); + + let _ = None::<()>.is_none(); + + let opt = Some(false); + let x = if opt.is_some() { true } else { false }; + takes_bool(x); + + issue6067(); + + let _ = if gen_opt().is_some() { + 1 + } else if gen_opt().is_none() { + 2 + } else { + 3 + }; +} + +fn gen_opt() -> Option<()> { + None +} + +fn takes_bool(_: bool) {} + +fn foo() {} + +fn bar() {} + +// Methods that are unstable const should not be suggested within a const context, see issue #5697. +// However, in Rust 1.48.0 the methods `is_some` and `is_none` of `Option` were stabilized as const, +// so the following should be linted. +const fn issue6067() { + if Some(42).is_some() {} + + if None::<()>.is_none() {} + + while Some(42).is_some() {} + + while None::<()>.is_none() {} + + Some(42).is_some(); + + None::<()>.is_none(); +} diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching_option.rs b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.rs new file mode 100644 index 00000000000..2a98435e790 --- /dev/null +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.rs @@ -0,0 +1,100 @@ +// run-rustfix + +#![warn(clippy::all)] +#![warn(clippy::redundant_pattern_matching)] +#![allow( + clippy::unit_arg, + unused_must_use, + clippy::needless_bool, + clippy::match_like_matches_macro, + deprecated +)] + +fn main() { + if let None = None::<()> {} + + if let Some(_) = Some(42) {} + + if let Some(_) = Some(42) { + foo(); + } else { + bar(); + } + + while let Some(_) = Some(42) {} + + while let None = Some(42) {} + + while let None = None::<()> {} + + let mut v = vec![1, 2, 3]; + while let Some(_) = v.pop() { + foo(); + } + + if None::<i32>.is_none() {} + + if Some(42).is_some() {} + + match Some(42) { + Some(_) => true, + None => false, + }; + + match None::<()> { + Some(_) => false, + None => true, + }; + + let _ = match None::<()> { + Some(_) => false, + None => true, + }; + + let opt = Some(false); + let x = if let Some(_) = opt { true } else { false }; + takes_bool(x); + + issue6067(); + + let _ = if let Some(_) = gen_opt() { + 1 + } else if let None = gen_opt() { + 2 + } else { + 3 + }; +} + +fn gen_opt() -> Option<()> { + None +} + +fn takes_bool(_: bool) {} + +fn foo() {} + +fn bar() {} + +// Methods that are unstable const should not be suggested within a const context, see issue #5697. +// However, in Rust 1.48.0 the methods `is_some` and `is_none` of `Option` were stabilized as const, +// so the following should be linted. +const fn issue6067() { + if let Some(_) = Some(42) {} + + if let None = None::<()> {} + + while let Some(_) = Some(42) {} + + while let None = None::<()> {} + + match Some(42) { + Some(_) => true, + None => false, + }; + + match None::<()> { + Some(_) => false, + None => true, + }; +} diff --git a/src/tools/clippy/tests/ui/redundant_pattern_matching_option.stderr b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.stderr new file mode 100644 index 00000000000..eebb3448491 --- /dev/null +++ b/src/tools/clippy/tests/ui/redundant_pattern_matching_option.stderr @@ -0,0 +1,134 @@ +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:14:12 + | +LL | if let None = None::<()> {} + | -------^^^^------------- help: try this: `if None::<()>.is_none()` + | + = note: `-D clippy::redundant-pattern-matching` implied by `-D warnings` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:16:12 + | +LL | if let Some(_) = Some(42) {} + | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:18:12 + | +LL | if let Some(_) = Some(42) { + | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:24:15 + | +LL | while let Some(_) = Some(42) {} + | ----------^^^^^^^----------- help: try this: `while Some(42).is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:26:15 + | +LL | while let None = Some(42) {} + | ----------^^^^----------- help: try this: `while Some(42).is_none()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:28:15 + | +LL | while let None = None::<()> {} + | ----------^^^^------------- help: try this: `while None::<()>.is_none()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:31:15 + | +LL | while let Some(_) = v.pop() { + | ----------^^^^^^^---------- help: try this: `while v.pop().is_some()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:39:5 + | +LL | / match Some(42) { +LL | | Some(_) => true, +LL | | None => false, +LL | | }; + | |_____^ help: try this: `Some(42).is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:44:5 + | +LL | / match None::<()> { +LL | | Some(_) => false, +LL | | None => true, +LL | | }; + | |_____^ help: try this: `None::<()>.is_none()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:49:13 + | +LL | let _ = match None::<()> { + | _____________^ +LL | | Some(_) => false, +LL | | None => true, +LL | | }; + | |_____^ help: try this: `None::<()>.is_none()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:55:20 + | +LL | let x = if let Some(_) = opt { true } else { false }; + | -------^^^^^^^------ help: try this: `if opt.is_some()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:60:20 + | +LL | let _ = if let Some(_) = gen_opt() { + | -------^^^^^^^------------ help: try this: `if gen_opt().is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:62:19 + | +LL | } else if let None = gen_opt() { + | -------^^^^------------ help: try this: `if gen_opt().is_none()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:83:12 + | +LL | if let Some(_) = Some(42) {} + | -------^^^^^^^----------- help: try this: `if Some(42).is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:85:12 + | +LL | if let None = None::<()> {} + | -------^^^^------------- help: try this: `if None::<()>.is_none()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:87:15 + | +LL | while let Some(_) = Some(42) {} + | ----------^^^^^^^----------- help: try this: `while Some(42).is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:89:15 + | +LL | while let None = None::<()> {} + | ----------^^^^------------- help: try this: `while None::<()>.is_none()` + +error: redundant pattern matching, consider using `is_some()` + --> $DIR/redundant_pattern_matching_option.rs:91:5 + | +LL | / match Some(42) { +LL | | Some(_) => true, +LL | | None => false, +LL | | }; + | |_____^ help: try this: `Some(42).is_some()` + +error: redundant pattern matching, consider using `is_none()` + --> $DIR/redundant_pattern_matching_option.rs:96:5 + | +LL | / match None::<()> { +LL | | Some(_) => false, +LL | | None => true, +LL | | }; + | |_____^ help: try this: `None::<()>.is_none()` + +error: aborting due to 19 previous errors + diff --git a/src/tools/clippy/tests/ui/trailing_zeros.rs b/src/tools/clippy/tests/ui/trailing_zeros.rs index 1cef8c2cfc9..fbdc977b769 100644 --- a/src/tools/clippy/tests/ui/trailing_zeros.rs +++ b/src/tools/clippy/tests/ui/trailing_zeros.rs @@ -1,4 +1,5 @@ #![allow(unused_parens)] +#![warn(clippy::verbose_bit_mask)] fn main() { let x: i32 = 42; diff --git a/src/tools/clippy/tests/ui/trailing_zeros.stderr b/src/tools/clippy/tests/ui/trailing_zeros.stderr index 320d9cc3f64..79855111830 100644 --- a/src/tools/clippy/tests/ui/trailing_zeros.stderr +++ b/src/tools/clippy/tests/ui/trailing_zeros.stderr @@ -1,5 +1,5 @@ error: bit mask could be simplified with a call to `trailing_zeros` - --> $DIR/trailing_zeros.rs:5:13 + --> $DIR/trailing_zeros.rs:6:13 | LL | let _ = (x & 0b1111 == 0); // suggest trailing_zeros | ^^^^^^^^^^^^^^^^^ help: try: `x.trailing_zeros() >= 4` @@ -7,7 +7,7 @@ LL | let _ = (x & 0b1111 == 0); // suggest trailing_zeros = note: `-D clippy::verbose-bit-mask` implied by `-D warnings` error: bit mask could be simplified with a call to `trailing_zeros` - --> $DIR/trailing_zeros.rs:6:13 + --> $DIR/trailing_zeros.rs:7:13 | LL | let _ = x & 0b1_1111 == 0; // suggest trailing_zeros | ^^^^^^^^^^^^^^^^^ help: try: `x.trailing_zeros() >= 5` diff --git a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.fixed b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.fixed index fa66e68794e..4ba2a0a5dbc 100644 --- a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.fixed +++ b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.fixed @@ -2,6 +2,7 @@ #![warn(clippy::unnecessary_lazy_evaluations)] #![allow(clippy::redundant_closure)] #![allow(clippy::bind_instead_of_map)] +#![allow(clippy::map_identity)] struct Deep(Option<usize>); @@ -34,13 +35,13 @@ fn main() { let _ = opt.unwrap_or(2); let _ = opt.unwrap_or(astronomers_pi); let _ = opt.unwrap_or(ext_str.some_field); - let _ = opt.unwrap_or(ext_arr[0]); + let _ = opt.unwrap_or_else(|| ext_arr[0]); let _ = opt.and(ext_opt); let _ = opt.or(ext_opt); let _ = opt.or(None); let _ = opt.get_or_insert(2); let _ = opt.ok_or(2); - let _ = opt.ok_or(ext_arr[0]); + let _ = nested_tuple_opt.unwrap_or(Some((1, 2))); // Cases when unwrap is not called on a simple variable let _ = Some(10).unwrap_or(2); @@ -60,7 +61,6 @@ fn main() { // Should not lint - Option let _ = opt.unwrap_or_else(|| ext_str.return_some_field()); let _ = nested_opt.unwrap_or_else(|| Some(some_call())); - let _ = nested_tuple_opt.unwrap_or_else(|| Some((1, 2))); let _ = nested_tuple_opt.unwrap_or_else(|| Some((some_call(), some_call()))); let _ = opt.or_else(some_call); let _ = opt.or_else(|| some_call()); @@ -69,13 +69,16 @@ fn main() { let _ = deep.0.get_or_insert_with(|| some_call()); let _ = deep.0.or_else(some_call); let _ = deep.0.or_else(|| some_call()); + let _ = opt.ok_or_else(|| ext_arr[0]); - // These are handled by bind_instead_of_map + // should not lint, bind_instead_of_map takes priority let _ = Some(10).and_then(|idx| Some(ext_arr[idx])); let _ = Some(10).and_then(|idx| Some(idx)); - let _: Option<usize> = None.or_else(|| Some(3)); - let _ = deep.0.or_else(|| Some(3)); - let _ = opt.or_else(|| Some(3)); + + // should lint, bind_instead_of_map doesn't apply + let _: Option<usize> = None.or(Some(3)); + let _ = deep.0.or(Some(3)); + let _ = opt.or(Some(3)); // Should lint - Result let res: Result<usize, usize> = Err(5); @@ -92,26 +95,28 @@ fn main() { let _ = res2.unwrap_or_else(|err| err.return_some_field()); let _ = res2.unwrap_or_else(|_| ext_str.return_some_field()); + // should not lint, bind_instead_of_map takes priority let _: Result<usize, usize> = res.and_then(|x| Ok(x)); - let _: Result<usize, usize> = res.and_then(|x| Err(x)); - - let _: Result<usize, usize> = res.or_else(|err| Ok(err)); let _: Result<usize, usize> = res.or_else(|err| Err(err)); - // These are handled by bind_instead_of_map let _: Result<usize, usize> = res.and_then(|_| Ok(2)); let _: Result<usize, usize> = res.and_then(|_| Ok(astronomers_pi)); let _: Result<usize, usize> = res.and_then(|_| Ok(ext_str.some_field)); - let _: Result<usize, usize> = res.and_then(|_| Err(2)); - let _: Result<usize, usize> = res.and_then(|_| Err(astronomers_pi)); - let _: Result<usize, usize> = res.and_then(|_| Err(ext_str.some_field)); - - let _: Result<usize, usize> = res.or_else(|_| Ok(2)); - let _: Result<usize, usize> = res.or_else(|_| Ok(astronomers_pi)); - let _: Result<usize, usize> = res.or_else(|_| Ok(ext_str.some_field)); - let _: Result<usize, usize> = res.or_else(|_| Err(2)); let _: Result<usize, usize> = res.or_else(|_| Err(astronomers_pi)); let _: Result<usize, usize> = res.or_else(|_| Err(ext_str.some_field)); + + // should lint, bind_instead_of_map doesn't apply + let _: Result<usize, usize> = res.and(Err(2)); + let _: Result<usize, usize> = res.and(Err(astronomers_pi)); + let _: Result<usize, usize> = res.and(Err(ext_str.some_field)); + + let _: Result<usize, usize> = res.or(Ok(2)); + let _: Result<usize, usize> = res.or(Ok(astronomers_pi)); + let _: Result<usize, usize> = res.or(Ok(ext_str.some_field)); + + // neither bind_instead_of_map nor unnecessary_lazy_eval applies here + let _: Result<usize, usize> = res.and_then(|x| Err(x)); + let _: Result<usize, usize> = res.or_else(|err| Ok(err)); } diff --git a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.rs b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.rs index 04f47d1aa29..466915217e4 100644 --- a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.rs +++ b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.rs @@ -2,6 +2,7 @@ #![warn(clippy::unnecessary_lazy_evaluations)] #![allow(clippy::redundant_closure)] #![allow(clippy::bind_instead_of_map)] +#![allow(clippy::map_identity)] struct Deep(Option<usize>); @@ -40,7 +41,7 @@ fn main() { let _ = opt.or_else(|| None); let _ = opt.get_or_insert_with(|| 2); let _ = opt.ok_or_else(|| 2); - let _ = opt.ok_or_else(|| ext_arr[0]); + let _ = nested_tuple_opt.unwrap_or_else(|| Some((1, 2))); // Cases when unwrap is not called on a simple variable let _ = Some(10).unwrap_or_else(|| 2); @@ -60,7 +61,6 @@ fn main() { // Should not lint - Option let _ = opt.unwrap_or_else(|| ext_str.return_some_field()); let _ = nested_opt.unwrap_or_else(|| Some(some_call())); - let _ = nested_tuple_opt.unwrap_or_else(|| Some((1, 2))); let _ = nested_tuple_opt.unwrap_or_else(|| Some((some_call(), some_call()))); let _ = opt.or_else(some_call); let _ = opt.or_else(|| some_call()); @@ -69,10 +69,13 @@ fn main() { let _ = deep.0.get_or_insert_with(|| some_call()); let _ = deep.0.or_else(some_call); let _ = deep.0.or_else(|| some_call()); + let _ = opt.ok_or_else(|| ext_arr[0]); - // These are handled by bind_instead_of_map + // should not lint, bind_instead_of_map takes priority let _ = Some(10).and_then(|idx| Some(ext_arr[idx])); let _ = Some(10).and_then(|idx| Some(idx)); + + // should lint, bind_instead_of_map doesn't apply let _: Option<usize> = None.or_else(|| Some(3)); let _ = deep.0.or_else(|| Some(3)); let _ = opt.or_else(|| Some(3)); @@ -92,17 +95,19 @@ fn main() { let _ = res2.unwrap_or_else(|err| err.return_some_field()); let _ = res2.unwrap_or_else(|_| ext_str.return_some_field()); + // should not lint, bind_instead_of_map takes priority let _: Result<usize, usize> = res.and_then(|x| Ok(x)); - let _: Result<usize, usize> = res.and_then(|x| Err(x)); - - let _: Result<usize, usize> = res.or_else(|err| Ok(err)); let _: Result<usize, usize> = res.or_else(|err| Err(err)); - // These are handled by bind_instead_of_map let _: Result<usize, usize> = res.and_then(|_| Ok(2)); let _: Result<usize, usize> = res.and_then(|_| Ok(astronomers_pi)); let _: Result<usize, usize> = res.and_then(|_| Ok(ext_str.some_field)); + let _: Result<usize, usize> = res.or_else(|_| Err(2)); + let _: Result<usize, usize> = res.or_else(|_| Err(astronomers_pi)); + let _: Result<usize, usize> = res.or_else(|_| Err(ext_str.some_field)); + + // should lint, bind_instead_of_map doesn't apply let _: Result<usize, usize> = res.and_then(|_| Err(2)); let _: Result<usize, usize> = res.and_then(|_| Err(astronomers_pi)); let _: Result<usize, usize> = res.and_then(|_| Err(ext_str.some_field)); @@ -111,7 +116,7 @@ fn main() { let _: Result<usize, usize> = res.or_else(|_| Ok(astronomers_pi)); let _: Result<usize, usize> = res.or_else(|_| Ok(ext_str.some_field)); - let _: Result<usize, usize> = res.or_else(|_| Err(2)); - let _: Result<usize, usize> = res.or_else(|_| Err(astronomers_pi)); - let _: Result<usize, usize> = res.or_else(|_| Err(ext_str.some_field)); + // neither bind_instead_of_map nor unnecessary_lazy_eval applies here + let _: Result<usize, usize> = res.and_then(|x| Err(x)); + let _: Result<usize, usize> = res.or_else(|err| Ok(err)); } diff --git a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.stderr b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.stderr index 5c1b2eb1f14..44dcd0cafbb 100644 --- a/src/tools/clippy/tests/ui/unnecessary_lazy_eval.stderr +++ b/src/tools/clippy/tests/ui/unnecessary_lazy_eval.stderr @@ -1,5 +1,5 @@ error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:34:13 + --> $DIR/unnecessary_lazy_eval.rs:35:13 | LL | let _ = opt.unwrap_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `opt.unwrap_or(2)` @@ -7,142 +7,190 @@ LL | let _ = opt.unwrap_or_else(|| 2); = note: `-D clippy::unnecessary-lazy-evaluations` implied by `-D warnings` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:35:13 + --> $DIR/unnecessary_lazy_eval.rs:36:13 | LL | let _ = opt.unwrap_or_else(|| astronomers_pi); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `opt.unwrap_or(astronomers_pi)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:36:13 + --> $DIR/unnecessary_lazy_eval.rs:37:13 | LL | let _ = opt.unwrap_or_else(|| ext_str.some_field); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `opt.unwrap_or(ext_str.some_field)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:37:13 - | -LL | let _ = opt.unwrap_or_else(|| ext_arr[0]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `opt.unwrap_or(ext_arr[0])` - -error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:38:13 + --> $DIR/unnecessary_lazy_eval.rs:39:13 | LL | let _ = opt.and_then(|_| ext_opt); | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `opt.and(ext_opt)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:39:13 + --> $DIR/unnecessary_lazy_eval.rs:40:13 | LL | let _ = opt.or_else(|| ext_opt); | ^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `opt.or(ext_opt)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:40:13 + --> $DIR/unnecessary_lazy_eval.rs:41:13 | LL | let _ = opt.or_else(|| None); | ^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `opt.or(None)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:41:13 + --> $DIR/unnecessary_lazy_eval.rs:42:13 | LL | let _ = opt.get_or_insert_with(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `get_or_insert` instead: `opt.get_or_insert(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:42:13 + --> $DIR/unnecessary_lazy_eval.rs:43:13 | LL | let _ = opt.ok_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^ help: Use `ok_or` instead: `opt.ok_or(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:43:13 + --> $DIR/unnecessary_lazy_eval.rs:44:13 | -LL | let _ = opt.ok_or_else(|| ext_arr[0]); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `ok_or` instead: `opt.ok_or(ext_arr[0])` +LL | let _ = nested_tuple_opt.unwrap_or_else(|| Some((1, 2))); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `nested_tuple_opt.unwrap_or(Some((1, 2)))` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:46:13 + --> $DIR/unnecessary_lazy_eval.rs:47:13 | LL | let _ = Some(10).unwrap_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `Some(10).unwrap_or(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:47:13 + --> $DIR/unnecessary_lazy_eval.rs:48:13 | LL | let _ = Some(10).and_then(|_| ext_opt); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `Some(10).and(ext_opt)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:48:28 + --> $DIR/unnecessary_lazy_eval.rs:49:28 | LL | let _: Option<usize> = None.or_else(|| ext_opt); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `None.or(ext_opt)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:49:13 + --> $DIR/unnecessary_lazy_eval.rs:50:13 | LL | let _ = None.get_or_insert_with(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `get_or_insert` instead: `None.get_or_insert(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:50:35 + --> $DIR/unnecessary_lazy_eval.rs:51:35 | LL | let _: Result<usize, usize> = None.ok_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^^ help: Use `ok_or` instead: `None.ok_or(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:51:28 + --> $DIR/unnecessary_lazy_eval.rs:52:28 | LL | let _: Option<usize> = None.or_else(|| None); | ^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `None.or(None)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:54:13 + --> $DIR/unnecessary_lazy_eval.rs:55:13 | LL | let _ = deep.0.unwrap_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `deep.0.unwrap_or(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:55:13 + --> $DIR/unnecessary_lazy_eval.rs:56:13 | LL | let _ = deep.0.and_then(|_| ext_opt); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `deep.0.and(ext_opt)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:56:13 + --> $DIR/unnecessary_lazy_eval.rs:57:13 | LL | let _ = deep.0.or_else(|| None); | ^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `deep.0.or(None)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:57:13 + --> $DIR/unnecessary_lazy_eval.rs:58:13 | LL | let _ = deep.0.get_or_insert_with(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `get_or_insert` instead: `deep.0.get_or_insert(2)` error: unnecessary closure used to substitute value for `Option::None` - --> $DIR/unnecessary_lazy_eval.rs:58:13 + --> $DIR/unnecessary_lazy_eval.rs:59:13 | LL | let _ = deep.0.ok_or_else(|| 2); | ^^^^^^^^^^^^^^^^^^^^^^^ help: Use `ok_or` instead: `deep.0.ok_or(2)` +error: unnecessary closure used to substitute value for `Option::None` + --> $DIR/unnecessary_lazy_eval.rs:79:28 + | +LL | let _: Option<usize> = None.or_else(|| Some(3)); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `None.or(Some(3))` + +error: unnecessary closure used to substitute value for `Option::None` + --> $DIR/unnecessary_lazy_eval.rs:80:13 + | +LL | let _ = deep.0.or_else(|| Some(3)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `deep.0.or(Some(3))` + +error: unnecessary closure used to substitute value for `Option::None` + --> $DIR/unnecessary_lazy_eval.rs:81:13 + | +LL | let _ = opt.or_else(|| Some(3)); + | ^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `opt.or(Some(3))` + error: unnecessary closure used to substitute value for `Result::Err` - --> $DIR/unnecessary_lazy_eval.rs:84:13 + --> $DIR/unnecessary_lazy_eval.rs:87:13 | LL | let _ = res2.unwrap_or_else(|_| 2); | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `res2.unwrap_or(2)` error: unnecessary closure used to substitute value for `Result::Err` - --> $DIR/unnecessary_lazy_eval.rs:85:13 + --> $DIR/unnecessary_lazy_eval.rs:88:13 | LL | let _ = res2.unwrap_or_else(|_| astronomers_pi); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `res2.unwrap_or(astronomers_pi)` error: unnecessary closure used to substitute value for `Result::Err` - --> $DIR/unnecessary_lazy_eval.rs:86:13 + --> $DIR/unnecessary_lazy_eval.rs:89:13 | LL | let _ = res2.unwrap_or_else(|_| ext_str.some_field); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `unwrap_or` instead: `res2.unwrap_or(ext_str.some_field)` -error: aborting due to 24 previous errors +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:111:35 + | +LL | let _: Result<usize, usize> = res.and_then(|_| Err(2)); + | ^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `res.and(Err(2))` + +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:112:35 + | +LL | let _: Result<usize, usize> = res.and_then(|_| Err(astronomers_pi)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `res.and(Err(astronomers_pi))` + +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:113:35 + | +LL | let _: Result<usize, usize> = res.and_then(|_| Err(ext_str.some_field)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `and` instead: `res.and(Err(ext_str.some_field))` + +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:115:35 + | +LL | let _: Result<usize, usize> = res.or_else(|_| Ok(2)); + | ^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `res.or(Ok(2))` + +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:116:35 + | +LL | let _: Result<usize, usize> = res.or_else(|_| Ok(astronomers_pi)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `res.or(Ok(astronomers_pi))` + +error: unnecessary closure used to substitute value for `Result::Err` + --> $DIR/unnecessary_lazy_eval.rs:117:35 + | +LL | let _: Result<usize, usize> = res.or_else(|_| Ok(ext_str.some_field)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Use `or` instead: `res.or(Ok(ext_str.some_field))` + +error: aborting due to 32 previous errors diff --git a/src/tools/clippy/tests/ui/useless_conversion.stderr b/src/tools/clippy/tests/ui/useless_conversion.stderr index f1e880d2696..11c6efb25cc 100644 --- a/src/tools/clippy/tests/ui/useless_conversion.stderr +++ b/src/tools/clippy/tests/ui/useless_conversion.stderr @@ -1,4 +1,4 @@ -error: useless conversion to the same type +error: useless conversion to the same type: `T` --> $DIR/useless_conversion.rs:6:13 | LL | let _ = T::from(val); @@ -10,61 +10,61 @@ note: the lint level is defined here LL | #![deny(clippy::useless_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: useless conversion to the same type +error: useless conversion to the same type: `T` --> $DIR/useless_conversion.rs:7:5 | LL | val.into() | ^^^^^^^^^^ help: consider removing `.into()`: `val` -error: useless conversion to the same type +error: useless conversion to the same type: `i32` --> $DIR/useless_conversion.rs:19:22 | LL | let _: i32 = 0i32.into(); | ^^^^^^^^^^^ help: consider removing `.into()`: `0i32` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion.rs:60:21 | LL | let _: String = "foo".to_string().into(); | ^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `"foo".to_string()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion.rs:61:21 | LL | let _: String = From::from("foo".to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `From::from()`: `"foo".to_string()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion.rs:62:13 | LL | let _ = String::from("foo".to_string()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `"foo".to_string()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion.rs:63:13 | LL | let _ = String::from(format!("A: {:04}", 123)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `String::from()`: `format!("A: {:04}", 123)` -error: useless conversion to the same type +error: useless conversion to the same type: `std::str::Lines` --> $DIR/useless_conversion.rs:64:13 | LL | let _ = "".lines().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `"".lines()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::vec::IntoIter<i32>` --> $DIR/useless_conversion.rs:65:13 | LL | let _ = vec![1, 2, 3].into_iter().into_iter(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `vec![1, 2, 3].into_iter()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion.rs:66:21 | LL | let _: String = format!("Hello {}", "world").into(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into()`: `format!("Hello {}", "world")` -error: useless conversion to the same type +error: useless conversion to the same type: `i32` --> $DIR/useless_conversion.rs:71:13 | LL | let _ = i32::from(a + b) * 3; diff --git a/src/tools/clippy/tests/ui/useless_conversion_try.stderr b/src/tools/clippy/tests/ui/useless_conversion_try.stderr index b765727c168..2e0d9129bfb 100644 --- a/src/tools/clippy/tests/ui/useless_conversion_try.stderr +++ b/src/tools/clippy/tests/ui/useless_conversion_try.stderr @@ -1,4 +1,4 @@ -error: useless conversion to the same type +error: useless conversion to the same type: `T` --> $DIR/useless_conversion_try.rs:6:13 | LL | let _ = T::try_from(val).unwrap(); @@ -11,7 +11,7 @@ LL | #![deny(clippy::useless_conversion)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ = help: consider removing `T::try_from()` -error: useless conversion to the same type +error: useless conversion to the same type: `T` --> $DIR/useless_conversion_try.rs:7:5 | LL | val.try_into().unwrap() @@ -19,7 +19,7 @@ LL | val.try_into().unwrap() | = help: consider removing `.try_into()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:29:21 | LL | let _: String = "foo".to_string().try_into().unwrap(); @@ -27,7 +27,7 @@ LL | let _: String = "foo".to_string().try_into().unwrap(); | = help: consider removing `.try_into()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:30:21 | LL | let _: String = TryFrom::try_from("foo".to_string()).unwrap(); @@ -35,7 +35,7 @@ LL | let _: String = TryFrom::try_from("foo".to_string()).unwrap(); | = help: consider removing `TryFrom::try_from()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:31:13 | LL | let _ = String::try_from("foo".to_string()).unwrap(); @@ -43,7 +43,7 @@ LL | let _ = String::try_from("foo".to_string()).unwrap(); | = help: consider removing `String::try_from()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:32:13 | LL | let _ = String::try_from(format!("A: {:04}", 123)).unwrap(); @@ -51,7 +51,7 @@ LL | let _ = String::try_from(format!("A: {:04}", 123)).unwrap(); | = help: consider removing `String::try_from()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:33:21 | LL | let _: String = format!("Hello {}", "world").try_into().unwrap(); @@ -59,7 +59,7 @@ LL | let _: String = format!("Hello {}", "world").try_into().unwrap(); | = help: consider removing `.try_into()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:34:21 | LL | let _: String = "".to_owned().try_into().unwrap(); @@ -67,7 +67,7 @@ LL | let _: String = "".to_owned().try_into().unwrap(); | = help: consider removing `.try_into()` -error: useless conversion to the same type +error: useless conversion to the same type: `std::string::String` --> $DIR/useless_conversion_try.rs:35:27 | LL | let _: String = match String::from("_").try_into() { diff --git a/src/tools/clippy/tests/ui/write_with_newline.rs b/src/tools/clippy/tests/ui/write_with_newline.rs index 93afd73d111..1c1b1b58402 100644 --- a/src/tools/clippy/tests/ui/write_with_newline.rs +++ b/src/tools/clippy/tests/ui/write_with_newline.rs @@ -14,6 +14,7 @@ fn main() { write!(&mut v, "Hello {}\n", "world"); write!(&mut v, "Hello {} {}\n", "world", "#2"); write!(&mut v, "{}\n", 1265); + write!(&mut v, "\n"); // These should be fine write!(&mut v, ""); diff --git a/src/tools/clippy/tests/ui/write_with_newline.stderr b/src/tools/clippy/tests/ui/write_with_newline.stderr index 2473329ca72..a14e86122ee 100644 --- a/src/tools/clippy/tests/ui/write_with_newline.stderr +++ b/src/tools/clippy/tests/ui/write_with_newline.stderr @@ -44,7 +44,18 @@ LL | writeln!(&mut v, "{}", 1265); | ^^^^^^^ -- error: using `write!()` with a format string that ends in a single newline - --> $DIR/write_with_newline.rs:35:5 + --> $DIR/write_with_newline.rs:17:5 + | +LL | write!(&mut v, "/n"); + | ^^^^^^^^^^^^^^^^^^^^ + | +help: use `writeln!()` instead + | +LL | writeln!(&mut v, ); + | ^^^^^^^ -- + +error: using `write!()` with a format string that ends in a single newline + --> $DIR/write_with_newline.rs:36:5 | LL | write!(&mut v, "//n"); // should fail | ^^^^^^^^^^^^^^^^^^^^^^ @@ -55,7 +66,7 @@ LL | writeln!(&mut v, "/"); // should fail | ^^^^^^^ -- error: using `write!()` with a format string that ends in a single newline - --> $DIR/write_with_newline.rs:42:5 + --> $DIR/write_with_newline.rs:43:5 | LL | / write!( LL | | &mut v, @@ -72,7 +83,7 @@ LL | "" | error: using `write!()` with a format string that ends in a single newline - --> $DIR/write_with_newline.rs:47:5 + --> $DIR/write_with_newline.rs:48:5 | LL | / write!( LL | | &mut v, @@ -89,7 +100,7 @@ LL | r"" | error: using `write!()` with a format string that ends in a single newline - --> $DIR/write_with_newline.rs:56:5 + --> $DIR/write_with_newline.rs:57:5 | LL | write!(&mut v, "/r/n"); //~ ERROR | ^^^^^^^^^^^^^^^^^^^^^^^ @@ -100,7 +111,7 @@ LL | writeln!(&mut v, "/r"); //~ ERROR | ^^^^^^^ -- error: using `write!()` with a format string that ends in a single newline - --> $DIR/write_with_newline.rs:57:5 + --> $DIR/write_with_newline.rs:58:5 | LL | write!(&mut v, "foo/rbar/n"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -110,5 +121,5 @@ help: use `writeln!()` instead LL | writeln!(&mut v, "foo/rbar"); | ^^^^^^^ -- -error: aborting due to 9 previous errors +error: aborting due to 10 previous errors |