diff options
| -rw-r--r-- | compiler/rustc_lint/src/precedence.rs | 3 | ||||
| -rw-r--r-- | tests/ui/lint/negative_literals.rs | 2 | ||||
| -rw-r--r-- | tests/ui/lint/negative_literals.stderr | 28 |
3 files changed, 20 insertions, 13 deletions
diff --git a/compiler/rustc_lint/src/precedence.rs b/compiler/rustc_lint/src/precedence.rs index eb2ba397277..52321e25c7d 100644 --- a/compiler/rustc_lint/src/precedence.rs +++ b/compiler/rustc_lint/src/precedence.rs @@ -16,6 +16,7 @@ declare_lint! { /// ### Example /// /// ```rust,compile_fail + /// # #![deny(ambiguous_negative_literals)] /// # #![allow(unused)] /// -1i32.abs(); // equals -1, while `(-1i32).abs()` equals 1 /// ``` @@ -27,7 +28,7 @@ declare_lint! { /// Method calls take precedence over unary precedence. Setting the /// precedence explicitly makes the code clearer and avoid potential bugs. pub AMBIGUOUS_NEGATIVE_LITERALS, - Deny, + Allow, "ambiguous negative literals operations", report_in_external_macro } diff --git a/tests/ui/lint/negative_literals.rs b/tests/ui/lint/negative_literals.rs index 048fcd6ff57..5964bbb559a 100644 --- a/tests/ui/lint/negative_literals.rs +++ b/tests/ui/lint/negative_literals.rs @@ -1,5 +1,7 @@ //@ check-fail +#![deny(ambiguous_negative_literals)] + fn main() { let _ = -1i32.abs(); //~^ ERROR `-` has lower precedence than method calls diff --git a/tests/ui/lint/negative_literals.stderr b/tests/ui/lint/negative_literals.stderr index df000a71882..b0323cc96a0 100644 --- a/tests/ui/lint/negative_literals.stderr +++ b/tests/ui/lint/negative_literals.stderr @@ -1,11 +1,15 @@ error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:4:13 + --> $DIR/negative_literals.rs:6:13 | LL | let _ = -1i32.abs(); | ^^^^^^^^^^^ | = note: e.g. `-4.abs()` equals `-4`; while `(-4).abs()` equals `4` - = note: `#[deny(ambiguous_negative_literals)]` on by default +note: the lint level is defined here + --> $DIR/negative_literals.rs:3:9 + | +LL | #![deny(ambiguous_negative_literals)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add parentheses around the `-` and the literal to call the method on a negative literal | LL | let _ = (-1i32).abs(); @@ -16,7 +20,7 @@ LL | let _ = -(1i32.abs()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:6:13 + --> $DIR/negative_literals.rs:8:13 | LL | let _ = -1f32.abs(); | ^^^^^^^^^^^ @@ -32,7 +36,7 @@ LL | let _ = -(1f32.abs()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:8:13 + --> $DIR/negative_literals.rs:10:13 | LL | let _ = -1f64.asin(); | ^^^^^^^^^^^^ @@ -48,7 +52,7 @@ LL | let _ = -(1f64.asin()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:10:13 + --> $DIR/negative_literals.rs:12:13 | LL | let _ = -1f64.asinh(); | ^^^^^^^^^^^^^ @@ -64,7 +68,7 @@ LL | let _ = -(1f64.asinh()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:12:13 + --> $DIR/negative_literals.rs:14:13 | LL | let _ = -1f64.tan(); | ^^^^^^^^^^^ @@ -80,7 +84,7 @@ LL | let _ = -(1f64.tan()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:14:13 + --> $DIR/negative_literals.rs:16:13 | LL | let _ = -1f64.tanh(); | ^^^^^^^^^^^^ @@ -96,7 +100,7 @@ LL | let _ = -(1f64.tanh()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:16:13 + --> $DIR/negative_literals.rs:18:13 | LL | let _ = -1.0_f64.cos().cos(); | ^^^^^^^^^^^^^^^^^^^^ @@ -112,7 +116,7 @@ LL | let _ = -(1.0_f64.cos().cos()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:18:13 + --> $DIR/negative_literals.rs:20:13 | LL | let _ = -1.0_f64.cos().sin(); | ^^^^^^^^^^^^^^^^^^^^ @@ -128,7 +132,7 @@ LL | let _ = -(1.0_f64.cos().sin()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:20:13 + --> $DIR/negative_literals.rs:22:13 | LL | let _ = -1.0_f64.sin().cos(); | ^^^^^^^^^^^^^^^^^^^^ @@ -144,7 +148,7 @@ LL | let _ = -(1.0_f64.sin().cos()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:22:13 + --> $DIR/negative_literals.rs:24:13 | LL | let _ = -1f64.sin().sin(); | ^^^^^^^^^^^^^^^^^ @@ -160,7 +164,7 @@ LL | let _ = -(1f64.sin().sin()); | + + error: `-` has lower precedence than method calls, which might be unexpected - --> $DIR/negative_literals.rs:25:11 + --> $DIR/negative_literals.rs:27:11 | LL | dbg!( -1.0_f32.cos() ); | ^^^^^^^^^^^^^^ |