summaryrefslogtreecommitdiffstats
path: root/src/test/ui/lint/noop-method-call.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/test/ui/lint/noop-method-call.rs')
-rw-r--r--src/test/ui/lint/noop-method-call.rs55
1 files changed, 0 insertions, 55 deletions
diff --git a/src/test/ui/lint/noop-method-call.rs b/src/test/ui/lint/noop-method-call.rs
deleted file mode 100644
index 89b296635..000000000
--- a/src/test/ui/lint/noop-method-call.rs
+++ /dev/null
@@ -1,55 +0,0 @@
-// check-pass
-
-#![allow(unused)]
-#![warn(noop_method_call)]
-
-use std::borrow::Borrow;
-use std::ops::Deref;
-
-struct PlainType<T>(T);
-
-#[derive(Clone)]
-struct CloneType<T>(T);
-
-fn main() {
- let non_clone_type_ref = &PlainType(1u32);
- let non_clone_type_ref_clone: &PlainType<u32> = non_clone_type_ref.clone();
- //~^ WARNING 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();
-
- // Calling clone on a double reference doesn't warn since the method call itself
- // peels the outer reference off
- 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.deref();
- //~^ WARNING call to `.deref()` on a reference in this situation does nothing
-
- // Dereferencing a &&T does not warn since it has collapsed the double reference
- let non_deref_type = &&PlainType(1u32);
- let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref();
-
- let non_borrow_type = &PlainType(1u32);
- let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow();
- //~^ WARNING 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();
-
- let xs = ["a", "b", "c"];
- let _v: Vec<&str> = xs.iter().map(|x| x.clone()).collect(); // ok, but could use `*x` instead
-}
-
-fn generic<T>(non_clone_type: &PlainType<T>) {
- non_clone_type.clone();
- //~^ WARNING call to `.clone()` on a reference in this situation does nothing
-}
-
-fn non_generic(non_clone_type: &PlainType<u32>) {
- non_clone_type.clone();
- //~^ WARNING call to `.clone()` on a reference in this situation does nothing
-}