Merging upstream version 1.73.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/tests/ui/lint/noop-method-call.fixed b/tests/ui/lint/noop-method-call.fixed
new file mode 100644
index 000000000..eeb80279f
--- /dev/null
+++ b/tests/ui/lint/noop-method-call.fixed
@@ -0,0 +1,51 @@
+// check-pass
+// run-rustfix
+
+#![allow(unused)]
+
+use std::borrow::Borrow;
+use std::ops::Deref;
+
+struct PlainType<T>(T);
+
+#[derive(Clone)]
+struct CloneType<T>(T);
+
+fn check(mut encoded: &[u8]) {
+    let _ = &mut encoded;
+    //~^ WARN call to `.clone()` on a reference in this situation does nothing
+    let _ = &encoded;
+    //~^ WARN call to `.clone()` on a reference in this situation does nothing
+}
+
+fn main() {
+    let non_clone_type_ref = &PlainType(1u32);
+    let non_clone_type_ref_clone: &PlainType<u32> = non_clone_type_ref;
+    //~^ WARN call to `.clone()` on a reference in this situation does nothing
+
+    let clone_type_ref = &CloneType(1u32);
+    let clone_type_ref_clone: CloneType<u32> = clone_type_ref.clone();
+
+
+    let non_deref_type = &PlainType(1u32);
+    let non_deref_type_deref: &PlainType<u32> = non_deref_type;
+    //~^ WARN call to `.deref()` on a reference in this situation does nothing
+
+    let non_borrow_type = &PlainType(1u32);
+    let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type;
+    //~^ WARN call to `.borrow()` on a reference in this situation does nothing
+
+    // Borrowing a &&T does not warn since it has collapsed the double reference
+    let non_borrow_type = &&PlainType(1u32);
+    let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow();
+}
+
+fn generic<T>(non_clone_type: &PlainType<T>) {
+    non_clone_type;
+    //~^ WARN call to `.clone()` on a reference in this situation does nothing
+}
+
+fn non_generic(non_clone_type: &PlainType<u32>) {
+    non_clone_type;
+    //~^ WARN call to `.clone()` on a reference in this situation does nothing
+}