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authorbors <bors@rust-lang.org>2018-10-13 17:03:47 +0000
committerbors <bors@rust-lang.org>2018-10-13 17:03:47 +0000
commit8f19cadf9508963ca3af9c9b184b65f4e0ff70e4 (patch)
tree242066196644b61c9954b379ea1a07bcf0ab4048 /src/liballoc
parentf51752774bbbe48d2aabe53c86e9e91ed3a73a5d (diff)
parentab91a6b4df04a60cf19682b1f016848d3e4784ad (diff)
downloadrust-8f19cadf9508963ca3af9c9b184b65f4e0ff70e4.tar.gz
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Auto merge of #55003 - zackmdavis:must_use_assoc_fn, r=varkor
`#[must_use]` for associated functions is supposed to actually work

In the comments of (closed, defunct) pull request #54884, @Centril [noted that](https://github.com/rust-lang/rust/pull/54884#issuecomment-427626495) must-use annotations didn't work on an associated function (what other communities might call a "static method"). Subsequent logging revealed that in this case we have a `Def::Method`, whereas the lint pass was only matching on `Def::Fn`. (One could argue that those def-names are thereby misleading—must-use for `self`-ful methods have always worked—but documenting or reworking that can be left to another day.)

r? @varkor
Diffstat (limited to 'src/liballoc')
-rw-r--r--src/liballoc/rc.rs4
-rw-r--r--src/liballoc/sync.rs4
2 files changed, 4 insertions, 4 deletions
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 915b8e7787e..40bb2faa362 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -867,7 +867,7 @@ impl<T: ?Sized> Clone for Rc<T> {
     ///
     /// let five = Rc::new(5);
     ///
-    /// Rc::clone(&five);
+    /// let _ = Rc::clone(&five);
     /// ```
     #[inline]
     fn clone(&self) -> Rc<T> {
@@ -1304,7 +1304,7 @@ impl<T: ?Sized> Clone for Weak<T> {
     ///
     /// let weak_five = Rc::downgrade(&Rc::new(5));
     ///
-    /// Weak::clone(&weak_five);
+    /// let _ = Weak::clone(&weak_five);
     /// ```
     #[inline]
     fn clone(&self) -> Weak<T> {
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index 9e245fbd7bb..35935861fb1 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -713,7 +713,7 @@ impl<T: ?Sized> Clone for Arc<T> {
     ///
     /// let five = Arc::new(5);
     ///
-    /// Arc::clone(&five);
+    /// let _ = Arc::clone(&five);
     /// ```
     #[inline]
     fn clone(&self) -> Arc<T> {
@@ -1135,7 +1135,7 @@ impl<T: ?Sized> Clone for Weak<T> {
     ///
     /// let weak_five = Arc::downgrade(&Arc::new(5));
     ///
-    /// Weak::clone(&weak_five);
+    /// let _ = Weak::clone(&weak_five);
     /// ```
     #[inline]
     fn clone(&self) -> Weak<T> {