Rollup merge of #84221 - ABouttefeux:generic-arg-elision, r=estebank

[rust.git] / src / tools / clippy / tests / ui / redundant_slicing.rs

diff --git a/src/tools/clippy/tests/ui/redundant_slicing.rs b/src/tools/clippy/tests/ui/redundant_slicing.rs
index 922b8b4ce57f613069b5c5a0c9575f0f6f2bf13a..554b6ba36ae0dd0451598c3beabb8d5390a38a99 100644 (file)
--- a/src/tools/clippy/tests/ui/redundant_slicing.rs
+++ b/src/tools/clippy/tests/ui/redundant_slicing.rs
@@ -2,10 +2,31 @@
 #![warn(clippy::redundant_slicing)]
 
 fn main() {
-    let x: &[u32] = &[0];
-    let err = &x[..];
+    let slice: &[u32] = &[0];
+    let _ = &slice[..];
 
     let v = vec![0];
-    let ok = &v[..];
-    let err = &(&v[..])[..];
+    let _ = &v[..]; // Changes the type
+    let _ = &(&v[..])[..]; // Outer borrow is redundant
+
+    static S: &[u8] = &[0, 1, 2];
+    let err = &mut &S[..]; // Should reborrow instead of slice
+
+    let mut vec = vec![0];
+    let mut_slice = &mut *vec;
+    let _ = &mut mut_slice[..]; // Should reborrow instead of slice
+
+    macro_rules! m {
+        ($e:expr) => {
+            $e
+        };
+    }
+    let _ = &m!(slice)[..];
+
+    macro_rules! m2 {
+        ($e:expr) => {
+            &$e[..]
+        };
+    }
+    let _ = m2!(slice); // Don't lint in a macro
 }