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author | Urgau <urgau@numericable.fr> | 2023-04-14 22:20:27 +0200 |
---|---|---|
committer | Urgau <urgau@numericable.fr> | 2023-05-10 19:36:02 +0200 |
commit | e280df556dbbe4d25c3a7f29f6e7fee44c543e0b (patch) | |
tree | 5141b2752f1901100ebf50fdebae60c5dec7a2b0 /tests | |
parent | d23f8957ae9f6a2e3121529422e7883d8bdbcc14 (diff) | |
download | rust-e280df556dbbe4d25c3a7f29f6e7fee44c543e0b.tar.gz |
Add note to suggest using `let _ = x` to ignore the value
Diffstat (limited to 'tests')
-rw-r--r-- | tests/ui/lint/drop_copy.stderr | 18 | ||||
-rw-r--r-- | tests/ui/lint/drop_ref.stderr | 23 | ||||
-rw-r--r-- | tests/ui/lint/forget_copy.stderr | 14 | ||||
-rw-r--r-- | tests/ui/lint/forget_ref.stderr | 17 |
4 files changed, 72 insertions, 0 deletions
diff --git a/tests/ui/lint/drop_copy.stderr b/tests/ui/lint/drop_copy.stderr index 2f122ad2aaa..db8e89ad295 100644 --- a/tests/ui/lint/drop_copy.stderr +++ b/tests/ui/lint/drop_copy.stderr @@ -6,6 +6,7 @@ LL | drop(s1); | | | argument has type `SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result note: the lint level is defined here --> $DIR/drop_copy.rs:3:9 | @@ -19,6 +20,8 @@ LL | drop(s2); | ^^^^^--^ | | | argument has type `SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_copy.rs:36:5 @@ -28,6 +31,7 @@ LL | drop(s3); | | | argument has type `&SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result = note: `#[warn(drop_ref)]` on by default warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing @@ -37,6 +41,8 @@ LL | drop(s4); | ^^^^^--^ | | | argument has type `SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_copy.rs:38:5 @@ -45,6 +51,8 @@ LL | drop(s5); | ^^^^^--^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_copy.rs:50:5 @@ -53,6 +61,8 @@ LL | drop(a2); | ^^^^^--^ | | | argument has type `&AnotherStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_copy.rs:52:5 @@ -61,6 +71,8 @@ LL | drop(a4); | ^^^^^--^ | | | argument has type `&AnotherStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing --> $DIR/drop_copy.rs:71:13 @@ -69,6 +81,8 @@ LL | drop(println_and(13)); | ^^^^^---------------^ | | | argument has type `i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing --> $DIR/drop_copy.rs:74:14 @@ -77,6 +91,8 @@ LL | 3 if drop(println_and(14)) == () => (), | ^^^^^---------------^ | | | argument has type `i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing --> $DIR/drop_copy.rs:76:14 @@ -85,6 +101,8 @@ LL | 4 => drop(2), | ^^^^^-^ | | | argument has type `i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: 10 warnings emitted diff --git a/tests/ui/lint/drop_ref.stderr b/tests/ui/lint/drop_ref.stderr index cd81f72d6e9..04c988fe99d 100644 --- a/tests/ui/lint/drop_ref.stderr +++ b/tests/ui/lint/drop_ref.stderr @@ -6,6 +6,7 @@ LL | drop(&SomeStruct); | | | argument has type `&SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result note: the lint level is defined here --> $DIR/drop_ref.rs:3:9 | @@ -19,6 +20,8 @@ LL | drop(&owned1); | ^^^^^-------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:12:5 @@ -27,6 +30,8 @@ LL | drop(&&owned1); | ^^^^^--------^ | | | argument has type `&&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:13:5 @@ -35,6 +40,8 @@ LL | drop(&mut owned1); | ^^^^^-----------^ | | | argument has type `&mut SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:17:5 @@ -43,6 +50,8 @@ LL | drop(reference1); | ^^^^^----------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:20:5 @@ -51,6 +60,8 @@ LL | drop(reference2); | ^^^^^----------^ | | | argument has type `&mut SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:23:5 @@ -59,6 +70,8 @@ LL | drop(reference3); | ^^^^^----------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:28:5 @@ -67,6 +80,8 @@ LL | drop(&val); | ^^^^^----^ | | | argument has type `&T` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:36:5 @@ -75,6 +90,8 @@ LL | std::mem::drop(&SomeStruct); | ^^^^^^^^^^^^^^^-----------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:91:13 @@ -83,6 +100,8 @@ LL | drop(println_and(&13)); | ^^^^^----------------^ | | | argument has type `&i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:94:14 @@ -91,6 +110,8 @@ LL | 3 if drop(println_and(&14)) == () => (), | ^^^^^----------------^ | | | argument has type `&i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing --> $DIR/drop_ref.rs:96:14 @@ -99,6 +120,8 @@ LL | 4 => drop(&2), | ^^^^^--^ | | | argument has type `&i32` + | + = note: use `let _ = ...` to ignore the expression or result warning: 12 warnings emitted diff --git a/tests/ui/lint/forget_copy.stderr b/tests/ui/lint/forget_copy.stderr index b5ce052d379..37bc8a8854e 100644 --- a/tests/ui/lint/forget_copy.stderr +++ b/tests/ui/lint/forget_copy.stderr @@ -6,6 +6,7 @@ LL | forget(s1); | | | argument has type `SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result note: the lint level is defined here --> $DIR/forget_copy.rs:3:9 | @@ -19,6 +20,8 @@ LL | forget(s2); | ^^^^^^^--^ | | | argument has type `SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_copy.rs:36:5 @@ -28,6 +31,7 @@ LL | forget(s3); | | | argument has type `&SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result = note: `#[warn(forget_ref)]` on by default warning: calls to `std::mem::forget` with a value that implements `Copy` does nothing @@ -37,6 +41,8 @@ LL | forget(s4); | ^^^^^^^--^ | | | argument has type `SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_copy.rs:38:5 @@ -45,6 +51,8 @@ LL | forget(s5); | ^^^^^^^--^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_copy.rs:50:5 @@ -53,6 +61,8 @@ LL | forget(a2); | ^^^^^^^--^ | | | argument has type `&AnotherStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_copy.rs:52:5 @@ -61,6 +71,8 @@ LL | forget(a3); | ^^^^^^^--^ | | | argument has type `&AnotherStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_copy.rs:53:5 @@ -69,6 +81,8 @@ LL | forget(a4); | ^^^^^^^--^ | | | argument has type `&AnotherStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: 8 warnings emitted diff --git a/tests/ui/lint/forget_ref.stderr b/tests/ui/lint/forget_ref.stderr index f20f5f54b25..63fc7791980 100644 --- a/tests/ui/lint/forget_ref.stderr +++ b/tests/ui/lint/forget_ref.stderr @@ -6,6 +6,7 @@ LL | forget(&SomeStruct); | | | argument has type `&SomeStruct` | + = note: use `let _ = ...` to ignore the expression or result note: the lint level is defined here --> $DIR/forget_ref.rs:3:9 | @@ -19,6 +20,8 @@ LL | forget(&owned); | ^^^^^^^------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:14:5 @@ -27,6 +30,8 @@ LL | forget(&&owned); | ^^^^^^^-------^ | | | argument has type `&&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:15:5 @@ -35,6 +40,8 @@ LL | forget(&mut owned); | ^^^^^^^----------^ | | | argument has type `&mut SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:19:5 @@ -43,6 +50,8 @@ LL | forget(&*reference1); | ^^^^^^^------------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:22:5 @@ -51,6 +60,8 @@ LL | forget(reference2); | ^^^^^^^----------^ | | | argument has type `&mut SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:25:5 @@ -59,6 +70,8 @@ LL | forget(reference3); | ^^^^^^^----------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:30:5 @@ -67,6 +80,8 @@ LL | forget(&val); | ^^^^^^^----^ | | | argument has type `&T` + | + = note: use `let _ = ...` to ignore the expression or result warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing --> $DIR/forget_ref.rs:38:5 @@ -75,6 +90,8 @@ LL | std::mem::forget(&SomeStruct); | ^^^^^^^^^^^^^^^^^-----------^ | | | argument has type `&SomeStruct` + | + = note: use `let _ = ...` to ignore the expression or result warning: 9 warnings emitted |