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-rw-r--r--tests/ui/arc_with_non_send_sync.rs7
-rw-r--r--tests/ui/arc_with_non_send_sync.stderr29
-rw-r--r--tests/ui/auxiliary/proc_macro_attr.rs14
-rw-r--r--tests/ui/cast.rs12
-rw-r--r--tests/ui/cast.stderr45
-rw-r--r--tests/ui/crashes/ice-12585.rs26
-rw-r--r--tests/ui/duplicated_attributes.rs10
-rw-r--r--tests/ui/duplicated_attributes.stderr31
-rw-r--r--tests/ui/manual_unwrap_or_default.fixed10
-rw-r--r--tests/ui/manual_unwrap_or_default.rs10
-rw-r--r--tests/ui/manual_unwrap_or_default.stderr2
-rw-r--r--tests/ui/needless_borrow.fixed8
-rw-r--r--tests/ui/needless_borrow.rs8
-rw-r--r--tests/ui/needless_borrow.stderr8
-rw-r--r--tests/ui/nonminimal_bool_methods.fixed8
-rw-r--r--tests/ui/nonminimal_bool_methods.rs8
-rw-r--r--tests/ui/nonminimal_bool_methods.stderr20
-rw-r--r--tests/ui/unconditional_recursion.rs2
-rw-r--r--tests/ui/unnecessary_clippy_cfg.stderr38
-rw-r--r--tests/ui/useless_attribute.fixed2
-rw-r--r--tests/ui/useless_attribute.rs2
21 files changed, 240 insertions, 60 deletions
diff --git a/tests/ui/arc_with_non_send_sync.rs b/tests/ui/arc_with_non_send_sync.rs
index 349e81912e3..c287480bb1f 100644
--- a/tests/ui/arc_with_non_send_sync.rs
+++ b/tests/ui/arc_with_non_send_sync.rs
@@ -33,16 +33,9 @@ fn main() {
     let _ = Arc::new(42);
 
     let _ = Arc::new(RefCell::new(42));
-    //~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
-    //~| NOTE: the trait `Sync` is not implemented for `RefCell<i32>`
 
     let mutex = Mutex::new(1);
     let _ = Arc::new(mutex.lock().unwrap());
-    //~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
-    //~| NOTE: the trait `Send` is not implemented for `MutexGuard<'_, i32>`
 
     let _ = Arc::new(&42 as *const i32);
-    //~^ ERROR: usage of an `Arc` that is not `Send` and `Sync`
-    //~| NOTE: the trait `Send` is not implemented for `*const i32`
-    //~| NOTE: the trait `Sync` is not implemented for `*const i32`
 }
diff --git a/tests/ui/arc_with_non_send_sync.stderr b/tests/ui/arc_with_non_send_sync.stderr
index d4e63037620..da363a3ebdd 100644
--- a/tests/ui/arc_with_non_send_sync.stderr
+++ b/tests/ui/arc_with_non_send_sync.stderr
@@ -4,38 +4,31 @@ error: usage of an `Arc` that is not `Send` and `Sync`
 LL |     let _ = Arc::new(RefCell::new(42));
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: `Arc<RefCell<i32>>` is not `Send` and `Sync` as:
-   = note: - the trait `Sync` is not implemented for `RefCell<i32>`
-   = help: consider using an `Rc` instead. `Arc` does not provide benefits for non `Send` and `Sync` types
-   = note: if you intend to use `Arc` with `Send` and `Sync` traits
-   = note: wrap the inner type with a `Mutex` or implement `Send` and `Sync` for `RefCell<i32>`
+   = note: `Arc<RefCell<i32>>` is not `Send` and `Sync` as `RefCell<i32>` is not `Sync`
+   = help: if the `Arc` will not used be across threads replace it with an `Rc`
+   = help: otherwise make `RefCell<i32>` `Send` and `Sync` or consider a wrapper type such as `Mutex`
    = note: `-D clippy::arc-with-non-send-sync` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::arc_with_non_send_sync)]`
 
 error: usage of an `Arc` that is not `Send` and `Sync`
-  --> tests/ui/arc_with_non_send_sync.rs:40:13
+  --> tests/ui/arc_with_non_send_sync.rs:38:13
    |
 LL |     let _ = Arc::new(mutex.lock().unwrap());
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: `Arc<MutexGuard<'_, i32>>` is not `Send` and `Sync` as:
-   = note: - the trait `Send` is not implemented for `MutexGuard<'_, i32>`
-   = help: consider using an `Rc` instead. `Arc` does not provide benefits for non `Send` and `Sync` types
-   = note: if you intend to use `Arc` with `Send` and `Sync` traits
-   = note: wrap the inner type with a `Mutex` or implement `Send` and `Sync` for `MutexGuard<'_, i32>`
+   = note: `Arc<MutexGuard<'_, i32>>` is not `Send` and `Sync` as `MutexGuard<'_, i32>` is not `Send`
+   = help: if the `Arc` will not used be across threads replace it with an `Rc`
+   = help: otherwise make `MutexGuard<'_, i32>` `Send` and `Sync` or consider a wrapper type such as `Mutex`
 
 error: usage of an `Arc` that is not `Send` and `Sync`
-  --> tests/ui/arc_with_non_send_sync.rs:44:13
+  --> tests/ui/arc_with_non_send_sync.rs:40:13
    |
 LL |     let _ = Arc::new(&42 as *const i32);
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: `Arc<*const i32>` is not `Send` and `Sync` as:
-   = note: - the trait `Send` is not implemented for `*const i32`
-   = note: - the trait `Sync` is not implemented for `*const i32`
-   = help: consider using an `Rc` instead. `Arc` does not provide benefits for non `Send` and `Sync` types
-   = note: if you intend to use `Arc` with `Send` and `Sync` traits
-   = note: wrap the inner type with a `Mutex` or implement `Send` and `Sync` for `*const i32`
+   = note: `Arc<*const i32>` is not `Send` and `Sync` as `*const i32` is neither `Send` nor `Sync`
+   = help: if the `Arc` will not used be across threads replace it with an `Rc`
+   = help: otherwise make `*const i32` `Send` and `Sync` or consider a wrapper type such as `Mutex`
 
 error: aborting due to 3 previous errors
 
diff --git a/tests/ui/auxiliary/proc_macro_attr.rs b/tests/ui/auxiliary/proc_macro_attr.rs
index a6f3b164c9b..f6fdebaf252 100644
--- a/tests/ui/auxiliary/proc_macro_attr.rs
+++ b/tests/ui/auxiliary/proc_macro_attr.rs
@@ -176,3 +176,17 @@ pub fn with_empty_docs(_attr: TokenStream, input: TokenStream) -> TokenStream {
     }
     .into()
 }
+
+#[proc_macro_attribute]
+pub fn duplicated_attr(_attr: TokenStream, input: TokenStream) -> TokenStream {
+    let item = parse_macro_input!(input as syn::Item);
+    let attrs: Vec<syn::Attribute> = vec![];
+    quote! {
+        #(#attrs)*
+        #[allow(unused)]
+        #[allow(unused)]
+        #[allow(unused)]
+        #item
+    }
+    .into()
+}
diff --git a/tests/ui/cast.rs b/tests/ui/cast.rs
index ce76ad3d3ad..215c008902d 100644
--- a/tests/ui/cast.rs
+++ b/tests/ui/cast.rs
@@ -463,6 +463,18 @@ fn issue11642() {
     }
 }
 
+fn issue11738() {
+    macro_rules! m {
+        () => {
+            let _ = i32::MIN as u32; // cast_sign_loss
+            let _ = u32::MAX as u8; // cast_possible_truncation
+            let _ = std::f64::consts::PI as f32; // cast_possible_truncation
+            let _ = 0i8 as i32; // cast_lossless
+        };
+    }
+    m!();
+}
+
 fn issue12506() -> usize {
     let bar: Result<Option<i64>, u32> = Ok(Some(10));
     bar.unwrap().unwrap() as usize
diff --git a/tests/ui/cast.stderr b/tests/ui/cast.stderr
index 3736e8aee0a..8b269c47176 100644
--- a/tests/ui/cast.stderr
+++ b/tests/ui/cast.stderr
@@ -650,8 +650,47 @@ error: casting `i32` to `u32` may lose the sign of the value
 LL |         (a.abs() * b.pow(2) / c.abs()) as u32
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+error: casting `i32` to `u32` may lose the sign of the value
+  --> tests/ui/cast.rs:469:21
+   |
+LL |             let _ = i32::MIN as u32; // cast_sign_loss
+   |                     ^^^^^^^^^^^^^^^
+...
+LL |     m!();
+   |     ---- in this macro invocation
+   |
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: casting `u32` to `u8` may truncate the value
+  --> tests/ui/cast.rs:470:21
+   |
+LL |             let _ = u32::MAX as u8; // cast_possible_truncation
+   |                     ^^^^^^^^^^^^^^
+...
+LL |     m!();
+   |     ---- in this macro invocation
+   |
+   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+help: ... or use `try_from` and handle the error accordingly
+   |
+LL |             let _ = u8::try_from(u32::MAX); // cast_possible_truncation
+   |                     ~~~~~~~~~~~~~~~~~~~~~~
+
+error: casting `f64` to `f32` may truncate the value
+  --> tests/ui/cast.rs:471:21
+   |
+LL |             let _ = std::f64::consts::PI as f32; // cast_possible_truncation
+   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+...
+LL |     m!();
+   |     ---- in this macro invocation
+   |
+   = help: if this is intentional allow the lint with `#[allow(clippy::cast_possible_truncation)]` ...
+   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
+
 error: casting `i64` to `usize` may truncate the value on targets with 32-bit wide pointers
-  --> tests/ui/cast.rs:468:5
+  --> tests/ui/cast.rs:480:5
    |
 LL |     bar.unwrap().unwrap() as usize
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -663,10 +702,10 @@ LL |     usize::try_from(bar.unwrap().unwrap())
    |
 
 error: casting `i64` to `usize` may lose the sign of the value
-  --> tests/ui/cast.rs:468:5
+  --> tests/ui/cast.rs:480:5
    |
 LL |     bar.unwrap().unwrap() as usize
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 87 previous errors
+error: aborting due to 90 previous errors
 
diff --git a/tests/ui/crashes/ice-12585.rs b/tests/ui/crashes/ice-12585.rs
new file mode 100644
index 00000000000..7928115c0a9
--- /dev/null
+++ b/tests/ui/crashes/ice-12585.rs
@@ -0,0 +1,26 @@
+#![allow(clippy::unit_arg)]
+
+struct One {
+    x: i32,
+}
+struct Two {
+    x: i32,
+}
+
+struct Product {}
+
+impl Product {
+    pub fn a_method(self, _: ()) {}
+}
+
+fn from_array(_: [i32; 2]) -> Product {
+    todo!()
+}
+
+pub fn main() {
+    let one = One { x: 1 };
+    let two = Two { x: 2 };
+
+    let product = from_array([one.x, two.x]);
+    product.a_method(<()>::default());
+}
diff --git a/tests/ui/duplicated_attributes.rs b/tests/ui/duplicated_attributes.rs
index d051c881f15..d51e7e37beb 100644
--- a/tests/ui/duplicated_attributes.rs
+++ b/tests/ui/duplicated_attributes.rs
@@ -1,9 +1,14 @@
+//@aux-build:proc_macro_attr.rs
+
 #![warn(clippy::duplicated_attributes)]
 #![cfg(any(unix, windows))]
 #![allow(dead_code)]
 #![allow(dead_code)] //~ ERROR: duplicated attribute
 #![cfg(any(unix, windows))] // Should not warn!
 
+#[macro_use]
+extern crate proc_macro_attr;
+
 #[cfg(any(unix, windows, target_os = "linux"))]
 #[allow(dead_code)]
 #[allow(dead_code)] //~ ERROR: duplicated attribute
@@ -12,7 +17,10 @@ fn foo() {}
 
 #[cfg(unix)]
 #[cfg(windows)]
-#[cfg(unix)] //~ ERROR: duplicated attribute
+#[cfg(unix)] // cfgs are not handled
 fn bar() {}
 
+#[proc_macro_attr::duplicated_attr()] // Should not warn!
+fn babar() {}
+
 fn main() {}
diff --git a/tests/ui/duplicated_attributes.stderr b/tests/ui/duplicated_attributes.stderr
index 9e26ba990ac..0903617a8d1 100644
--- a/tests/ui/duplicated_attributes.stderr
+++ b/tests/ui/duplicated_attributes.stderr
@@ -1,16 +1,16 @@
 error: duplicated attribute
-  --> tests/ui/duplicated_attributes.rs:4:10
+  --> tests/ui/duplicated_attributes.rs:6:10
    |
 LL | #![allow(dead_code)]
    |          ^^^^^^^^^
    |
 note: first defined here
-  --> tests/ui/duplicated_attributes.rs:3:10
+  --> tests/ui/duplicated_attributes.rs:5:10
    |
 LL | #![allow(dead_code)]
    |          ^^^^^^^^^
 help: remove this attribute
-  --> tests/ui/duplicated_attributes.rs:4:10
+  --> tests/ui/duplicated_attributes.rs:6:10
    |
 LL | #![allow(dead_code)]
    |          ^^^^^^^^^
@@ -18,38 +18,21 @@ LL | #![allow(dead_code)]
    = help: to override `-D warnings` add `#[allow(clippy::duplicated_attributes)]`
 
 error: duplicated attribute
-  --> tests/ui/duplicated_attributes.rs:9:9
+  --> tests/ui/duplicated_attributes.rs:14:9
    |
 LL | #[allow(dead_code)]
    |         ^^^^^^^^^
    |
 note: first defined here
-  --> tests/ui/duplicated_attributes.rs:8:9
+  --> tests/ui/duplicated_attributes.rs:13:9
    |
 LL | #[allow(dead_code)]
    |         ^^^^^^^^^
 help: remove this attribute
-  --> tests/ui/duplicated_attributes.rs:9:9
+  --> tests/ui/duplicated_attributes.rs:14:9
    |
 LL | #[allow(dead_code)]
    |         ^^^^^^^^^
 
-error: duplicated attribute
-  --> tests/ui/duplicated_attributes.rs:15:7
-   |
-LL | #[cfg(unix)]
-   |       ^^^^
-   |
-note: first defined here
-  --> tests/ui/duplicated_attributes.rs:13:7
-   |
-LL | #[cfg(unix)]
-   |       ^^^^
-help: remove this attribute
-  --> tests/ui/duplicated_attributes.rs:15:7
-   |
-LL | #[cfg(unix)]
-   |       ^^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/manual_unwrap_or_default.fixed b/tests/ui/manual_unwrap_or_default.fixed
index a0b707628a8..d6e736ba9cc 100644
--- a/tests/ui/manual_unwrap_or_default.fixed
+++ b/tests/ui/manual_unwrap_or_default.fixed
@@ -16,6 +16,16 @@ fn main() {
 
     let x: Option<Vec<String>> = None;
     x.unwrap_or_default();
+
+    // Issue #12564
+    // No error as &Vec<_> doesn't implement std::default::Default
+    let mut map = std::collections::HashMap::from([(0, vec![0; 3]), (1, vec![1; 3]), (2, vec![2])]);
+    let x: &[_] = if let Some(x) = map.get(&0) { x } else { &[] };
+    // Same code as above written using match.
+    let x: &[_] = match map.get(&0) {
+        Some(x) => x,
+        None => &[],
+    };
 }
 
 // Issue #12531
diff --git a/tests/ui/manual_unwrap_or_default.rs b/tests/ui/manual_unwrap_or_default.rs
index 1d4cca12f6c..462d5d90ee7 100644
--- a/tests/ui/manual_unwrap_or_default.rs
+++ b/tests/ui/manual_unwrap_or_default.rs
@@ -37,6 +37,16 @@ fn main() {
     } else {
         Vec::default()
     };
+
+    // Issue #12564
+    // No error as &Vec<_> doesn't implement std::default::Default
+    let mut map = std::collections::HashMap::from([(0, vec![0; 3]), (1, vec![1; 3]), (2, vec![2])]);
+    let x: &[_] = if let Some(x) = map.get(&0) { x } else { &[] };
+    // Same code as above written using match.
+    let x: &[_] = match map.get(&0) {
+        Some(x) => x,
+        None => &[],
+    };
 }
 
 // Issue #12531
diff --git a/tests/ui/manual_unwrap_or_default.stderr b/tests/ui/manual_unwrap_or_default.stderr
index d89212e6045..3f1da444301 100644
--- a/tests/ui/manual_unwrap_or_default.stderr
+++ b/tests/ui/manual_unwrap_or_default.stderr
@@ -53,7 +53,7 @@ LL | |     };
    | |_____^ help: replace it with: `x.unwrap_or_default()`
 
 error: match can be simplified with `.unwrap_or_default()`
-  --> tests/ui/manual_unwrap_or_default.rs:46:20
+  --> tests/ui/manual_unwrap_or_default.rs:56:20
    |
 LL |           Some(_) => match *b {
    |  ____________________^
diff --git a/tests/ui/needless_borrow.fixed b/tests/ui/needless_borrow.fixed
index 998f5430fdf..5121077b4ca 100644
--- a/tests/ui/needless_borrow.fixed
+++ b/tests/ui/needless_borrow.fixed
@@ -251,3 +251,11 @@ mod issue_10253 {
         (&S).f::<()>();
     }
 }
+
+fn issue_12268() {
+    let option = Some((&1,));
+    let x = (&1,);
+    option.unwrap_or((x.0,));
+    //~^ ERROR: this expression creates a reference which is immediately dereferenced by the
+    // compiler
+}
diff --git a/tests/ui/needless_borrow.rs b/tests/ui/needless_borrow.rs
index acb2c74d849..e3a5cb280ba 100644
--- a/tests/ui/needless_borrow.rs
+++ b/tests/ui/needless_borrow.rs
@@ -251,3 +251,11 @@ mod issue_10253 {
         (&S).f::<()>();
     }
 }
+
+fn issue_12268() {
+    let option = Some((&1,));
+    let x = (&1,);
+    option.unwrap_or((&x.0,));
+    //~^ ERROR: this expression creates a reference which is immediately dereferenced by the
+    // compiler
+}
diff --git a/tests/ui/needless_borrow.stderr b/tests/ui/needless_borrow.stderr
index 5f028338764..4b2b17e7e57 100644
--- a/tests/ui/needless_borrow.stderr
+++ b/tests/ui/needless_borrow.stderr
@@ -163,5 +163,11 @@ error: this expression borrows a value the compiler would automatically borrow
 LL |         let _ = &mut (&mut { x.u }).x;
    |                      ^^^^^^^^^^^^^^ help: change this to: `{ x.u }`
 
-error: aborting due to 27 previous errors
+error: this expression creates a reference which is immediately dereferenced by the compiler
+  --> tests/ui/needless_borrow.rs:258:23
+   |
+LL |     option.unwrap_or((&x.0,));
+   |                       ^^^^ help: change this to: `x.0`
+
+error: aborting due to 28 previous errors
 
diff --git a/tests/ui/nonminimal_bool_methods.fixed b/tests/ui/nonminimal_bool_methods.fixed
index bd4be3e5a44..aba599678e3 100644
--- a/tests/ui/nonminimal_bool_methods.fixed
+++ b/tests/ui/nonminimal_bool_methods.fixed
@@ -109,4 +109,12 @@ fn dont_warn_for_negated_partial_ord_comparison() {
     let _ = !(a >= b);
 }
 
+fn issue_12625() {
+    let a = 0;
+    let b = 0;
+    if (a as u64) < b {} //~ ERROR: this boolean expression can be simplified
+    if (a as u64) < b {} //~ ERROR: this boolean expression can be simplified
+    if a as u64 > b {} //~ ERROR: this boolean expression can be simplified
+}
+
 fn main() {}
diff --git a/tests/ui/nonminimal_bool_methods.rs b/tests/ui/nonminimal_bool_methods.rs
index 4523c7385df..35f22db1d36 100644
--- a/tests/ui/nonminimal_bool_methods.rs
+++ b/tests/ui/nonminimal_bool_methods.rs
@@ -109,4 +109,12 @@ fn dont_warn_for_negated_partial_ord_comparison() {
     let _ = !(a >= b);
 }
 
+fn issue_12625() {
+    let a = 0;
+    let b = 0;
+    if !(a as u64 >= b) {} //~ ERROR: this boolean expression can be simplified
+    if !((a as u64) >= b) {} //~ ERROR: this boolean expression can be simplified
+    if !(a as u64 <= b) {} //~ ERROR: this boolean expression can be simplified
+}
+
 fn main() {}
diff --git a/tests/ui/nonminimal_bool_methods.stderr b/tests/ui/nonminimal_bool_methods.stderr
index e32c8dacd2f..18da4e0d380 100644
--- a/tests/ui/nonminimal_bool_methods.stderr
+++ b/tests/ui/nonminimal_bool_methods.stderr
@@ -79,5 +79,23 @@ error: this boolean expression can be simplified
 LL |     if !res.is_none() {}
    |        ^^^^^^^^^^^^^^ help: try: `res.is_some()`
 
-error: aborting due to 13 previous errors
+error: this boolean expression can be simplified
+  --> tests/ui/nonminimal_bool_methods.rs:115:8
+   |
+LL |     if !(a as u64 >= b) {}
+   |        ^^^^^^^^^^^^^^^^ help: try: `(a as u64) < b`
+
+error: this boolean expression can be simplified
+  --> tests/ui/nonminimal_bool_methods.rs:116:8
+   |
+LL |     if !((a as u64) >= b) {}
+   |        ^^^^^^^^^^^^^^^^^^ help: try: `(a as u64) < b`
+
+error: this boolean expression can be simplified
+  --> tests/ui/nonminimal_bool_methods.rs:117:8
+   |
+LL |     if !(a as u64 <= b) {}
+   |        ^^^^^^^^^^^^^^^^ help: try: `a as u64 > b`
+
+error: aborting due to 16 previous errors
 
diff --git a/tests/ui/unconditional_recursion.rs b/tests/ui/unconditional_recursion.rs
index 70b390b00e2..a51fc567f50 100644
--- a/tests/ui/unconditional_recursion.rs
+++ b/tests/ui/unconditional_recursion.rs
@@ -266,7 +266,7 @@ struct S13 {
 
 impl S13 {
     fn new() -> Self {
-        // Shoud not warn!
+        // Should not warn!
         Self::default()
     }
 }
diff --git a/tests/ui/unnecessary_clippy_cfg.stderr b/tests/ui/unnecessary_clippy_cfg.stderr
index fbc05743ca7..3d58c9eb5da 100644
--- a/tests/ui/unnecessary_clippy_cfg.stderr
+++ b/tests/ui/unnecessary_clippy_cfg.stderr
@@ -57,5 +57,41 @@ error: no need to put clippy lints behind a `clippy` cfg
 LL | #![cfg_attr(clippy, deny(clippy::non_minimal_cfg, clippy::maybe_misused_cfg))]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `#![deny(clippy::non_minimal_cfg, clippy::maybe_misused_cfg)]`
 
-error: aborting due to 8 previous errors
+error: duplicated attribute
+  --> tests/ui/unnecessary_clippy_cfg.rs:8:26
+   |
+LL | #![cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg, clippy::maybe_misused_cfg))]
+   |                          ^^^^^^^^^
+   |
+note: first defined here
+  --> tests/ui/unnecessary_clippy_cfg.rs:6:26
+   |
+LL | #![cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg))]
+   |                          ^^^^^^^^^
+help: remove this attribute
+  --> tests/ui/unnecessary_clippy_cfg.rs:8:26
+   |
+LL | #![cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg, clippy::maybe_misused_cfg))]
+   |                          ^^^^^^^^^
+   = note: `-D clippy::duplicated-attributes` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::duplicated_attributes)]`
+
+error: duplicated attribute
+  --> tests/ui/unnecessary_clippy_cfg.rs:17:25
+   |
+LL | #[cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg, clippy::maybe_misused_cfg))]
+   |                         ^^^^^^^^^
+   |
+note: first defined here
+  --> tests/ui/unnecessary_clippy_cfg.rs:15:25
+   |
+LL | #[cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg))]
+   |                         ^^^^^^^^^
+help: remove this attribute
+  --> tests/ui/unnecessary_clippy_cfg.rs:17:25
+   |
+LL | #[cfg_attr(clippy, deny(dead_code, clippy::non_minimal_cfg, clippy::maybe_misused_cfg))]
+   |                         ^^^^^^^^^
+
+error: aborting due to 10 previous errors
 
diff --git a/tests/ui/useless_attribute.fixed b/tests/ui/useless_attribute.fixed
index d1cdf73d559..81759086f79 100644
--- a/tests/ui/useless_attribute.fixed
+++ b/tests/ui/useless_attribute.fixed
@@ -1,6 +1,6 @@
 //@aux-build:proc_macro_derive.rs
 
-#![allow(unused)]
+#![allow(unused, clippy::duplicated_attributes)]
 #![warn(clippy::useless_attribute)]
 #![warn(unreachable_pub)]
 #![feature(rustc_private)]
diff --git a/tests/ui/useless_attribute.rs b/tests/ui/useless_attribute.rs
index d6aa7fa242c..59a9dcf093b 100644
--- a/tests/ui/useless_attribute.rs
+++ b/tests/ui/useless_attribute.rs
@@ -1,6 +1,6 @@
 //@aux-build:proc_macro_derive.rs
 
-#![allow(unused)]
+#![allow(unused, clippy::duplicated_attributes)]
 #![warn(clippy::useless_attribute)]
 #![warn(unreachable_pub)]
 #![feature(rustc_private)]
generated by cgit-pink 1.4.1-3-g733a5 (git 2.37.1) at 2026-01-13 15:41:02 +0000