Merge branch 'master' into fix-4727

tests/ui/auxiliary/proc_macro_derive.rs

@@ -16,7 +16,7 @@ pub fn derive(_: TokenStream) -> TokenStream {
     let output = quote! {
         // Should not trigger `useless_attribute`
         #[allow(dead_code)]
-        extern crate clippy_lints;
+        extern crate rustc;
     };
     output
 }

tests/ui/builtin-type-shadow.stderr

@@ -10,9 +10,11 @@ error[E0308]: mismatched types
   --> $DIR/builtin-type-shadow.rs:5:5
    |
 LL | fn foo<u32>(a: u32) -> u32 {
-   |                        --- expected `u32` because of return type
+   |        ---             --- expected `u32` because of return type
+   |        |
+   |        this type parameter
 LL |     42
-   |     ^^ expected type parameter, found integer
+   |     ^^ expected type parameter `u32`, found integer
    |
    = note: expected type `u32`
               found type `{integer}`

tests/ui/crashes/ice-4760.rs

@@ -0,0 +1,10 @@
+// run-pass
+const COUNT: usize = 2;
+struct Thing;
+trait Dummy {}
+
+const _: () = {
+    impl Dummy for Thing where [i32; COUNT]: Sized {}
+};
+
+fn main() {}

tests/ui/deprecated.rs

@@ -5,5 +5,6 @@
 #[warn(clippy::misaligned_transmute)]
 #[warn(clippy::unused_collect)]
 #[warn(clippy::invalid_ref)]
+#[warn(clippy::into_iter_on_array)]
 
 fn main() {}

tests/ui/deprecated.stderr

@@ -42,11 +42,17 @@ error: lint `clippy::invalid_ref` has been removed: `superseded by rustc lint `i
 LL | #[warn(clippy::invalid_ref)]
    |        ^^^^^^^^^^^^^^^^^^^
 
+error: lint `clippy::into_iter_on_array` has been removed: `this lint has been uplifted to rustc and is now called `array_into_iter``
+  --> $DIR/deprecated.rs:8:8
+   |
+LL | #[warn(clippy::into_iter_on_array)]
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 error: lint `clippy::str_to_string` has been removed: `using `str::to_string` is common even today and specialization will likely happen soon`
   --> $DIR/deprecated.rs:1:8
    |
 LL | #[warn(clippy::str_to_string)]
    |        ^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 8 previous errors
+error: aborting due to 9 previous errors
 

tests/ui/exit1.rs

@@ -0,0 +1,15 @@
+#[warn(clippy::exit)]
+
+fn not_main() {
+    if true {
+        std::process::exit(4);
+    }
+}
+
+fn main() {
+    if true {
+        std::process::exit(2);
+    };
+    not_main();
+    std::process::exit(1);
+}

tests/ui/exit1.stderr

@@ -0,0 +1,10 @@
+error: usage of `process::exit`
+  --> $DIR/exit1.rs:5:9
+   |
+LL |         std::process::exit(4);
+   |         ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::exit` implied by `-D warnings`
+
+error: aborting due to previous error
+

tests/ui/exit2.rs

@@ -0,0 +1,13 @@
+#[warn(clippy::exit)]
+
+fn also_not_main() {
+    std::process::exit(3);
+}
+
+fn main() {
+    if true {
+        std::process::exit(2);
+    };
+    also_not_main();
+    std::process::exit(1);
+}

tests/ui/exit2.stderr

@@ -0,0 +1,10 @@
+error: usage of `process::exit`
+  --> $DIR/exit2.rs:4:5
+   |
+LL |     std::process::exit(3);
+   |     ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::exit` implied by `-D warnings`
+
+error: aborting due to previous error
+

tests/ui/exit3.rs

@@ -0,0 +1,8 @@
+#[warn(clippy::exit)]
+
+fn main() {
+    if true {
+        std::process::exit(2);
+    };
+    std::process::exit(1);
+}

tests/ui/for_loop_fixable.fixed

@@ -31,7 +31,7 @@ impl Unrelated {
     clippy::cognitive_complexity,
     clippy::similar_names
 )]
-#[allow(clippy::many_single_char_names, unused_variables, clippy::into_iter_on_array)]
+#[allow(clippy::many_single_char_names, unused_variables)]
 fn main() {
     const MAX_LEN: usize = 42;
     let mut vec = vec![1, 2, 3, 4];
@@ -102,9 +102,6 @@ fn main() {
     let out_vec = vec![1, 2, 3];
     for _v in out_vec {}
 
-    let array = [1, 2, 3];
-    for _v in &array {}
-
     for _v in &vec {} // these are fine
     for _v in &mut vec {} // these are fine
 

tests/ui/for_loop_fixable.rs

@@ -31,7 +31,7 @@ impl Unrelated {
     clippy::cognitive_complexity,
     clippy::similar_names
 )]
-#[allow(clippy::many_single_char_names, unused_variables, clippy::into_iter_on_array)]
+#[allow(clippy::many_single_char_names, unused_variables)]
 fn main() {
     const MAX_LEN: usize = 42;
     let mut vec = vec![1, 2, 3, 4];
@@ -102,9 +102,6 @@ fn main() {
     let out_vec = vec![1, 2, 3];
     for _v in out_vec.into_iter() {}
 
-    let array = [1, 2, 3];
-    for _v in array.into_iter() {}
-
     for _v in &vec {} // these are fine
     for _v in &mut vec {} // these are fine
 

tests/ui/for_loop_fixable.stderr

@@ -77,64 +77,58 @@ LL |     for _v in out_vec.into_iter() {}
    = note: `-D clippy::explicit-into-iter-loop` implied by `-D warnings`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:106:15
-   |
-LL |     for _v in array.into_iter() {}
-   |               ^^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&array`
-
-error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:111:15
+  --> $DIR/for_loop_fixable.rs:108:15
    |
 LL |     for _v in [1, 2, 3].iter() {}
    |               ^^^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[1, 2, 3]`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:115:15
+  --> $DIR/for_loop_fixable.rs:112:15
    |
 LL |     for _v in [0; 32].iter() {}
    |               ^^^^^^^^^^^^^^ help: to write this more concisely, try: `&[0; 32]`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:120:15
+  --> $DIR/for_loop_fixable.rs:117:15
    |
 LL |     for _v in ll.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&ll`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:123:15
+  --> $DIR/for_loop_fixable.rs:120:15
    |
 LL |     for _v in vd.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&vd`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:126:15
+  --> $DIR/for_loop_fixable.rs:123:15
    |
 LL |     for _v in bh.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&bh`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:129:15
+  --> $DIR/for_loop_fixable.rs:126:15
    |
 LL |     for _v in hm.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&hm`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:132:15
+  --> $DIR/for_loop_fixable.rs:129:15
    |
 LL |     for _v in bt.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&bt`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:135:15
+  --> $DIR/for_loop_fixable.rs:132:15
    |
 LL |     for _v in hs.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&hs`
 
 error: it is more concise to loop over references to containers instead of using explicit iteration methods
-  --> $DIR/for_loop_fixable.rs:138:15
+  --> $DIR/for_loop_fixable.rs:135:15
    |
 LL |     for _v in bs.iter() {}
    |               ^^^^^^^^^ help: to write this more concisely, try: `&bs`
 
-error: aborting due to 18 previous errors
+error: aborting due to 17 previous errors
 

tests/ui/for_loop_unfixable.rs

@@ -17,7 +17,7 @@
     unused,
     dead_code
 )]
-#[allow(clippy::many_single_char_names, unused_variables, clippy::into_iter_on_array)]
+#[allow(clippy::many_single_char_names, unused_variables)]
 fn main() {
     for i in 5..5 {
         println!("{}", i);

tests/ui/functions.rs

@@ -31,12 +31,12 @@ fn bad_multiline(
 extern "C" fn extern_fn(
     _one: u32,
     _two: u32,
-    _three: &str,
+    _three: *const u8,
     _four: bool,
     _five: f32,
     _six: f32,
     _seven: bool,
-    _eight: (),
+    _eight: *const std::ffi::c_void,
 ) {
 }
 

tests/ui/into_iter_on_ref.fixed

@@ -1,7 +1,6 @@
 // run-rustfix
 #![allow(clippy::useless_vec)]
 #![warn(clippy::into_iter_on_ref)]
-#![deny(clippy::into_iter_on_array)]
 
 struct X;
 use std::collections::*;
@@ -10,9 +9,7 @@ fn main() {
     for _ in &[1, 2, 3] {}
     for _ in vec![X, X] {}
     for _ in &vec![X, X] {}
-    for _ in [1, 2, 3].iter() {} //~ ERROR equivalent to .iter()
 
-    let _ = [1, 2, 3].iter(); //~ ERROR equivalent to .iter()
     let _ = vec![1, 2, 3].into_iter();
     let _ = (&vec![1, 2, 3]).iter(); //~ WARN equivalent to .iter()
     let _ = vec![1, 2, 3].into_boxed_slice().iter(); //~ WARN equivalent to .iter()

tests/ui/into_iter_on_ref.rs

@@ -1,7 +1,6 @@
 // run-rustfix
 #![allow(clippy::useless_vec)]
 #![warn(clippy::into_iter_on_ref)]
-#![deny(clippy::into_iter_on_array)]
 
 struct X;
 use std::collections::*;
@@ -10,9 +9,7 @@ fn main() {
     for _ in &[1, 2, 3] {}
     for _ in vec![X, X] {}
     for _ in &vec![X, X] {}
-    for _ in [1, 2, 3].into_iter() {} //~ ERROR equivalent to .iter()
 
-    let _ = [1, 2, 3].into_iter(); //~ ERROR equivalent to .iter()
     let _ = vec![1, 2, 3].into_iter();
     let _ = (&vec![1, 2, 3]).into_iter(); //~ WARN equivalent to .iter()
     let _ = vec![1, 2, 3].into_boxed_slice().into_iter(); //~ WARN equivalent to .iter()

tests/ui/into_iter_on_ref.stderr

@@ -1,23 +1,5 @@
-error: this .into_iter() call is equivalent to .iter() and will not move the array
-  --> $DIR/into_iter_on_ref.rs:13:24
-   |
-LL |     for _ in [1, 2, 3].into_iter() {} //~ ERROR equivalent to .iter()
-   |                        ^^^^^^^^^ help: call directly: `iter`
-   |
-note: lint level defined here
-  --> $DIR/into_iter_on_ref.rs:4:9
-   |
-LL | #![deny(clippy::into_iter_on_array)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: this .into_iter() call is equivalent to .iter() and will not move the array
-  --> $DIR/into_iter_on_ref.rs:15:23
-   |
-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 Vec
-  --> $DIR/into_iter_on_ref.rs:17:30
+  --> $DIR/into_iter_on_ref.rs:14:30
    |
 LL |     let _ = (&vec![1, 2, 3]).into_iter(); //~ WARN equivalent to .iter()
    |                              ^^^^^^^^^ help: call directly: `iter`
@@ -25,154 +7,154 @@ 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
-  --> $DIR/into_iter_on_ref.rs:18:46
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:19:41
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:20:44
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:22:32
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:23:36
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:24:40
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:26:24
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:27:28
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:28:32
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:29:37
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:30:34
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:31:38
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:32:44
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:33:48
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:34:39
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:35:43
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:36:41
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:37:45
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:38:43
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:39:47
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:41:39
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:42:41
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:43:38
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:44:43
+  --> $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
-  --> $DIR/into_iter_on_ref.rs:45:47
+  --> $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: aborting due to 28 previous errors
+error: aborting due to 26 previous errors
 

tests/ui/lint_without_lint_pass.rs

@@ -5,25 +5,25 @@
 extern crate rustc;
 use rustc::lint::{LintArray, LintPass};
 
-#[macro_use]
-extern crate clippy_lints;
-
-declare_clippy_lint! {
-    pub TEST_LINT,
-    correctness,
-    ""
+declare_tool_lint! {
+    pub clippy::TEST_LINT,
+    Warn,
+    "",
+    report_in_external_macro: true
 }
 
-declare_clippy_lint! {
-    pub TEST_LINT_REGISTERED,
-    correctness,
-    ""
+declare_tool_lint! {
+    pub clippy::TEST_LINT_REGISTERED,
+    Warn,
+    "",
+    report_in_external_macro: true
 }
 
-declare_clippy_lint! {
-    pub TEST_LINT_REGISTERED_ONLY_IMPL,
-    correctness,
-    ""
+declare_tool_lint! {
+    pub clippy::TEST_LINT_REGISTERED_ONLY_IMPL,
+    Warn,
+    "",
+    report_in_external_macro: true
 }
 
 pub struct Pass;

tests/ui/lint_without_lint_pass.stderr

@@ -1,10 +1,11 @@
 error: the lint `TEST_LINT` is not added to any `LintPass`
-  --> $DIR/lint_without_lint_pass.rs:11:1
+  --> $DIR/lint_without_lint_pass.rs:8:1
    |
-LL | / declare_clippy_lint! {
-LL | |     pub TEST_LINT,
-LL | |     correctness,
-LL | |     ""
+LL | / declare_tool_lint! {
+LL | |     pub clippy::TEST_LINT,
+LL | |     Warn,
+LL | |     "",
+LL | |     report_in_external_macro: true
 LL | | }
    | |_^
    |

tests/ui/needless_pass_by_value.rs

@@ -11,6 +11,7 @@
 use std::borrow::Borrow;
 use std::collections::HashSet;
 use std::convert::AsRef;
+use std::mem::MaybeUninit;
 
 // `v` should be warned
 // `w`, `x` and `y` are allowed (moved or mutated)
@@ -111,8 +112,8 @@ trait FalsePositive {
 }
 
 // shouldn't warn on extern funcs
-extern "C" fn ext(x: String) -> usize {
-    x.len()
+extern "C" fn ext(x: MaybeUninit<usize>) -> usize {
+    unsafe { x.assume_init() }
 }
 
 // whitelist RangeArgument

tests/ui/needless_pass_by_value.stderr

@@ -1,5 +1,5 @@
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:17:23
+  --> $DIR/needless_pass_by_value.rs:18:23
    |
 LL | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {
    |                       ^^^^^^ help: consider changing the type to: `&[T]`
@@ -7,55 +7,55 @@ LL | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T
    = note: `-D clippy::needless-pass-by-value` implied by `-D warnings`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:31:11
+  --> $DIR/needless_pass_by_value.rs:32:11
    |
 LL | fn bar(x: String, y: Wrapper) {
    |           ^^^^^^ help: consider changing the type to: `&str`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:31:22
+  --> $DIR/needless_pass_by_value.rs:32:22
    |
 LL | fn bar(x: String, y: Wrapper) {
    |                      ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:37:71
+  --> $DIR/needless_pass_by_value.rs:38:71
    |
 LL | fn test_borrow_trait<T: Borrow<str>, U: AsRef<str>, V>(t: T, u: U, v: V) {
    |                                                                       ^ help: consider taking a reference instead: `&V`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:49:18
+  --> $DIR/needless_pass_by_value.rs:50:18
    |
 LL | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
    |                  ^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&Option<Option<String>>`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:62:24
+  --> $DIR/needless_pass_by_value.rs:63:24
    |
 LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
    |                        ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:62:36
+  --> $DIR/needless_pass_by_value.rs:63:36
    |
 LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
    |                                    ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:78:49
+  --> $DIR/needless_pass_by_value.rs:79:49
    |
 LL | fn test_blanket_ref<T: Foo, S: Serialize>(_foo: T, _serializable: S) {}
    |                                                 ^ help: consider taking a reference instead: `&T`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:80:18
+  --> $DIR/needless_pass_by_value.rs:81:18
    |
 LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
    |                  ^^^^^^ help: consider taking a reference instead: `&String`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:80:29
+  --> $DIR/needless_pass_by_value.rs:81:29
    |
 LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
    |                             ^^^^^^
@@ -70,13 +70,13 @@ LL |     let _ = t.to_string();
    |             ^^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:80:40
+  --> $DIR/needless_pass_by_value.rs:81:40
    |
 LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
    |                                        ^^^^^^^^ help: consider taking a reference instead: `&Vec<i32>`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:80:53
+  --> $DIR/needless_pass_by_value.rs:81:53
    |
 LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
    |                                                     ^^^^^^^^
@@ -91,85 +91,85 @@ LL |     let _ = v.to_owned();
    |             ^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:93:12
+  --> $DIR/needless_pass_by_value.rs:94:12
    |
 LL |         s: String,
    |            ^^^^^^ help: consider changing the type to: `&str`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:94:12
+  --> $DIR/needless_pass_by_value.rs:95:12
    |
 LL |         t: String,
    |            ^^^^^^ help: consider taking a reference instead: `&String`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:103:23
+  --> $DIR/needless_pass_by_value.rs:104:23
    |
 LL |     fn baz(&self, _u: U, _s: Self) {}
    |                       ^ help: consider taking a reference instead: `&U`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:103:30
+  --> $DIR/needless_pass_by_value.rs:104:30
    |
 LL |     fn baz(&self, _u: U, _s: Self) {}
    |                              ^^^^ help: consider taking a reference instead: `&Self`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:125:24
+  --> $DIR/needless_pass_by_value.rs:126:24
    |
 LL | fn bar_copy(x: u32, y: CopyWrapper) {
    |                        ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
    |
 help: consider marking this type as Copy
-  --> $DIR/needless_pass_by_value.rs:123:1
+  --> $DIR/needless_pass_by_value.rs:124:1
    |
 LL | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:131:29
+  --> $DIR/needless_pass_by_value.rs:132:29
    |
 LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
    |                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
    |
 help: consider marking this type as Copy
-  --> $DIR/needless_pass_by_value.rs:123:1
+  --> $DIR/needless_pass_by_value.rs:124:1
    |
 LL | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:131:45
+  --> $DIR/needless_pass_by_value.rs:132:45
    |
 LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
    |                                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
    |
 help: consider marking this type as Copy
-  --> $DIR/needless_pass_by_value.rs:123:1
+  --> $DIR/needless_pass_by_value.rs:124:1
    |
 LL | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:131:61
+  --> $DIR/needless_pass_by_value.rs:132:61
    |
 LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
    |                                                             ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
    |
 help: consider marking this type as Copy
-  --> $DIR/needless_pass_by_value.rs:123:1
+  --> $DIR/needless_pass_by_value.rs:124:1
    |
 LL | struct CopyWrapper(u32);
    | ^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:143:40
+  --> $DIR/needless_pass_by_value.rs:144:40
    |
 LL | fn some_fun<'b, S: Bar<'b, ()>>(_item: S) {}
    |                                        ^ help: consider taking a reference instead: `&S`
 
 error: this argument is passed by value, but not consumed in the function body
-  --> $DIR/needless_pass_by_value.rs:148:20
+  --> $DIR/needless_pass_by_value.rs:149:20
    |
 LL | fn more_fun(_item: impl Club<'static, i32>) {}
    |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&impl Club<'static, i32>`

tests/ui/used_underscore_binding.rs

@@ -1,5 +1,6 @@
 // aux-build:proc_macro_derive.rs
 
+#![feature(rustc_private)]
 #![warn(clippy::all)]
 #![allow(clippy::blacklisted_name)]
 #![warn(clippy::used_underscore_binding)]

tests/ui/used_underscore_binding.stderr

@@ -1,5 +1,5 @@
 error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used.
-  --> $DIR/used_underscore_binding.rs:24:5
+  --> $DIR/used_underscore_binding.rs:25:5
    |
 LL |     _foo + 1
    |     ^^^^
@@ -7,25 +7,25 @@ LL |     _foo + 1
    = note: `-D clippy::used-underscore-binding` implied by `-D warnings`
 
 error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used.
-  --> $DIR/used_underscore_binding.rs:29:20
+  --> $DIR/used_underscore_binding.rs:30:20
    |
 LL |     println!("{}", _foo);
    |                    ^^^^
 
 error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used.
-  --> $DIR/used_underscore_binding.rs:30:16
+  --> $DIR/used_underscore_binding.rs:31:16
    |
 LL |     assert_eq!(_foo, _foo);
    |                ^^^^
 
 error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used.
-  --> $DIR/used_underscore_binding.rs:30:22
+  --> $DIR/used_underscore_binding.rs:31:22
    |
 LL |     assert_eq!(_foo, _foo);
    |                      ^^^^
 
 error: used binding `_underscore_field` which is prefixed with an underscore. A leading underscore signals that a binding will not be used.
-  --> $DIR/used_underscore_binding.rs:43:5
+  --> $DIR/used_underscore_binding.rs:44:5
    |
 LL |     s._underscore_field += 1;
    |     ^^^^^^^^^^^^^^^^^^^

tests/ui/useless_attribute.rs

@@ -2,16 +2,15 @@
 
 #![warn(clippy::useless_attribute)]
 #![warn(unreachable_pub)]
+#![feature(rustc_private)]
 
 #[allow(dead_code)]
 #[cfg_attr(feature = "cargo-clippy", allow(dead_code))]
 #[rustfmt::skip]
-#[cfg_attr(feature = "cargo-clippy",
-           allow(dead_code))]
 #[allow(unused_imports)]
 #[allow(unused_extern_crates)]
 #[macro_use]
-extern crate clippy_lints;
+extern crate rustc;
 
 #[macro_use]
 extern crate proc_macro_derive;

tests/ui/useless_attribute.stderr

@@ -1,5 +1,5 @@
 error: useless lint attribute
-  --> $DIR/useless_attribute.rs:6:1
+  --> $DIR/useless_attribute.rs:7:1
    |
 LL | #[allow(dead_code)]
    | ^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![allow(dead_code)]`
@@ -7,7 +7,7 @@ LL | #[allow(dead_code)]
    = note: `-D clippy::useless-attribute` implied by `-D warnings`
 
 error: useless lint attribute
-  --> $DIR/useless_attribute.rs:7:1
+  --> $DIR/useless_attribute.rs:8:1
    |
 LL | #[cfg_attr(feature = "cargo-clippy", allow(dead_code))]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if you just forgot a `!`, use: `#![cfg_attr(feature = "cargo-clippy", allow(dead_code)`