use _val to ignore parameter of any::type_name_of_val

tesuji · tesuji · commit c93198f90ea6 · 2019-12-21T16:48:35.000Z
diff --git a/src/libcore/any.rs b/src/libcore/any.rs
@@ -496,7 +496,6 @@ pub const fn type_name<T: ?Sized>() -> &'static str {
 /// ```
 #[unstable(feature = "type_name_of_val", issue = "66359")]
 #[rustc_const_unstable(feature = "const_type_name", issue = "63084")]
-pub const fn type_name_of_val<T: ?Sized>(val: &T) -> &'static str {
-    let _ = val;
+pub const fn type_name_of_val<T: ?Sized>(_val: &T) -> &'static str {
     type_name::<T>()
 }

Original file line number	Diff line number	Diff line change
`@@ -496,7 +496,6 @@ pub const fn type_name<T: ?Sized>() -> &'static str {`
`496`	`496`	/// ```
`497`	`497`	`#[unstable(feature = "type_name_of_val", issue = "66359")]`
`498`	`498`	`#[rustc_const_unstable(feature = "const_type_name", issue = "63084")]`
`499`		`-pub const fn type_name_of_val<T: ?Sized>(val: &T) -> &'static str {`
`500`		`- let _ = val;`
	`499`	`+pub const fn type_name_of_val<T: ?Sized>(_val: &T) -> &'static str {`
`501`	`500`	`type_name::<T>()`
`502`	`501`	`}`