Move MSRV tests into the lint specific test files

[rust.git] / tests / ui / explicit_auto_deref.rs

diff --git a/tests/ui/explicit_auto_deref.rs b/tests/ui/explicit_auto_deref.rs
index 4781962882bcb7c091bdb9ac158c7d93ad0e2c44..deedafad153b97ae0edd6d777637516d65c33410 100644 (file)
--- a/tests/ui/explicit_auto_deref.rs
+++ b/tests/ui/explicit_auto_deref.rs
@@ -1,5 +1,6 @@
 // run-rustfix
 
+#![feature(closure_lifetime_binder)]
 #![warn(clippy::explicit_auto_deref)]
 #![allow(
     dead_code,
@@ -10,7 +11,8 @@
     clippy::ptr_arg,
     clippy::redundant_field_names,
     clippy::too_many_arguments,
-    clippy::borrow_deref_ref
+    clippy::borrow_deref_ref,
+    clippy::let_unit_value
 )]
 
 trait CallableStr {
@@ -58,10 +60,16 @@ fn f_str_t<T>(_: &str, _: T) {}
 
 fn f_box_t<T>(_: &Box<T>) {}
 
+extern "C" {
+    fn var(_: u32, ...);
+}
+
 fn main() {
     let s = String::new();
 
     let _: &str = &*s;
+    let _: &str = &*{ String::new() };
+    let _: &str = &mut *{ String::new() };
     let _ = &*s; // Don't lint. Inferred type would change.
     let _: &_ = &*s; // Don't lint. Inferred type would change.
 
@@ -201,4 +209,61 @@ fn _f5(x: &u32) -> u32 {
 
     f_str(&&*ref_str); // `needless_borrow` will suggest removing both references
     f_str(&&**ref_str); // `needless_borrow` will suggest removing only one reference
+
+    let x = &&40;
+    unsafe {
+        var(0, &**x);
+    }
+
+    let s = &"str";
+    let _ = || return *s;
+    let _ = || -> &'static str { return *s };
+
+    struct X;
+    struct Y(X);
+    impl core::ops::Deref for Y {
+        type Target = X;
+        fn deref(&self) -> &Self::Target {
+            &self.0
+        }
+    }
+    let _: &X = &*{ Y(X) };
+    let _: &X = &*match 0 {
+        #[rustfmt::skip]
+        0 => { Y(X) },
+        _ => panic!(),
+    };
+    let _: &X = &*if true { Y(X) } else { panic!() };
+
+    fn deref_to_u<U, T: core::ops::Deref<Target = U>>(x: &T) -> &U {
+        &**x
+    }
+
+    let _ = |x: &'static Box<dyn Iterator<Item = u32>>| -> &'static dyn Iterator<Item = u32> { &**x };
+    fn ret_any(x: &Box<dyn std::any::Any>) -> &dyn std::any::Any {
+        &**x
+    }
+
+    let x = String::new();
+    let _: *const str = &*x;
+
+    struct S7([u32; 1]);
+    impl core::ops::Deref for S7 {
+        type Target = [u32; 1];
+        fn deref(&self) -> &Self::Target {
+            &self.0
+        }
+    }
+    let x = S7([0]);
+    let _: &[u32] = &*x;
+
+    let c1 = |_: &Vec<&u32>| {};
+    let x = &&vec![&1u32];
+    c1(*x);
+    let _ = for<'a, 'b> |x: &'a &'a Vec<&'b u32>, b: bool| -> &'a Vec<&'b u32> {
+        if b {
+            return *x;
+        }
+        *x
+    };
 }