1 files changed, 112 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/functions.rs b/src/tools/clippy/tests/ui/functions.rs
new file mode 100644
index 000000000..5521870ea
--- /dev/null
+++ b/src/tools/clippy/tests/ui/functions.rs
@@ -0,0 +1,112 @@
+#![warn(clippy::all)]
+#![allow(dead_code)]
+#![allow(unused_unsafe, clippy::missing_safety_doc)]
+
+// TOO_MANY_ARGUMENTS
+fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
+
+fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
+
+#[rustfmt::skip]
+fn bad_multiline(
+    one: u32,
+    two: u32,
+    three: &str,
+    four: bool,
+    five: f32,
+    six: f32,
+    seven: bool,
+    eight: ()
+) {
+    let _one = one;
+    let _two = two;
+    let _three = three;
+    let _four = four;
+    let _five = five;
+    let _six = six;
+    let _seven = seven;
+}
+
+// don't lint extern fns
+extern "C" fn extern_fn(
+    _one: u32,
+    _two: u32,
+    _three: *const u8,
+    _four: bool,
+    _five: f32,
+    _six: f32,
+    _seven: bool,
+    _eight: *const std::ffi::c_void,
+) {
+}
+
+pub trait Foo {
+    fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool);
+    fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ());
+
+    fn ptr(p: *const u8);
+}
+
+pub struct Bar;
+
+impl Bar {
+    fn good_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
+    fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
+}
+
+// ok, we don’t want to warn implementations
+impl Foo for Bar {
+    fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
+    fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
+
+    fn ptr(p: *const u8) {
+        println!("{}", unsafe { *p });
+        println!("{:?}", unsafe { p.as_ref() });
+        unsafe { std::ptr::read(p) };
+    }
+}
+
+// NOT_UNSAFE_PTR_ARG_DEREF
+
+fn private(p: *const u8) {
+    println!("{}", unsafe { *p });
+}
+
+pub fn public(p: *const u8) {
+    println!("{}", unsafe { *p });
+    println!("{:?}", unsafe { p.as_ref() });
+    unsafe { std::ptr::read(p) };
+}
+
+type Alias = *const u8;
+
+pub fn type_alias(p: Alias) {
+    println!("{}", unsafe { *p });
+    println!("{:?}", unsafe { p.as_ref() });
+    unsafe { std::ptr::read(p) };
+}
+
+impl Bar {
+    fn private(self, p: *const u8) {
+        println!("{}", unsafe { *p });
+    }
+
+    pub fn public(self, p: *const u8) {
+        println!("{}", unsafe { *p });
+        println!("{:?}", unsafe { p.as_ref() });
+        unsafe { std::ptr::read(p) };
+    }
+
+    pub fn public_ok(self, p: *const u8) {
+        if !p.is_null() {
+            println!("{:p}", p);
+        }
+    }
+
+    pub unsafe fn public_unsafe(self, p: *const u8) {
+        println!("{}", unsafe { *p });
+        println!("{:?}", unsafe { p.as_ref() });
+    }
+}
+
+fn main() {}