X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Ftools%2Fclippy%2Ftests%2Fui%2Funnecessary_to_owned.rs;h=2128bdacddadf03fa7736e020583e5912b00a6e7;hb=c93b07019d024038b07c2e5652971d033b29723c;hp=7f62ba3ab5d559ea0d8a60da23f977389044f054;hpb=3da66f035310b15e0d5ae32443e04ee5f4220edc;p=rust.git

diff --git a/src/tools/clippy/tests/ui/unnecessary_to_owned.rs b/src/tools/clippy/tests/ui/unnecessary_to_owned.rs
index 7f62ba3ab5d..2128bdacdda 100644
--- a/src/tools/clippy/tests/ui/unnecessary_to_owned.rs
+++ b/src/tools/clippy/tests/ui/unnecessary_to_owned.rs
@@ -357,3 +357,63 @@ pub fn main() {
         consume(b.to_string());
     }
 }
+
+mod issue_9351 {
+    #![allow(dead_code)]
+
+    use std::ops::Deref;
+    use std::path::{Path, PathBuf};
+
+    fn require_deref_path<T: Deref<Target = std::path::Path>>(x: T) -> T {
+        x
+    }
+
+    fn generic_arg_used_elsewhere<T: AsRef<Path>>(_x: T, _y: T) {}
+
+    fn id<T: AsRef<str>>(x: T) -> T {
+        x
+    }
+
+    fn predicates_are_satisfied(_x: impl std::fmt::Write) {}
+
+    // Should lint
+    fn single_return() -> impl AsRef<str> {
+        id("abc".to_string())
+    }
+
+    // Should not lint
+    fn multiple_returns(b: bool) -> impl AsRef<str> {
+        if b {
+            return String::new();
+        }
+
+        id("abc".to_string())
+    }
+
+    struct S1(String);
+
+    // Should not lint
+    fn fields1() -> S1 {
+        S1(id("abc".to_string()))
+    }
+
+    struct S2 {
+        s: String,
+    }
+
+    // Should not lint
+    fn fields2() {
+        let mut s = S2 { s: "abc".into() };
+        s.s = id("abc".to_string());
+    }
+
+    pub fn main() {
+        let path = std::path::Path::new("x");
+        let path_buf = path.to_owned();
+
+        // Should not lint.
+        let _x: PathBuf = require_deref_path(path.to_owned());
+        generic_arg_used_elsewhere(path.to_owned(), path_buf);
+        predicates_are_satisfied(id("abc".to_string()));
+    }
+}