style: fix dead_code lint

BurntSushi · BurntSushi · commit 21def527d55a · 2024-02-25T20:39:59.000-05:00
diff --git a/src/ext.rs b/src/ext.rs
@@ -39,11 +39,13 @@ impl<T> Pointer for *mut T {
 }
 
 /// A trait for adding some helper routines to raw bytes.
+#[cfg(test)]
 pub(crate) trait Byte {
     /// Converts this byte to a `char` if it's ASCII. Otherwise panics.
     fn to_char(self) -> char;
 }
 
+#[cfg(test)]
 impl Byte for u8 {
     fn to_char(self) -> char {
         assert!(self.is_ascii());

Original file line number	Diff line number	Diff line change
`@@ -39,11 +39,13 @@ impl<T> Pointer for *mut T {`
`39`	`39`	`}`
`40`	`40`
`41`	`41`	`/// A trait for adding some helper routines to raw bytes.`
	`42`	`+#[cfg(test)]`
`42`	`43`	`pub(crate) trait Byte {`
`43`	`44`	/// Converts this byte to a `char` if it's ASCII. Otherwise panics.
`44`	`45`	`fn to_char(self) -> char;`
`45`	`46`	`}`
`46`	`47`
	`48`	`+#[cfg(test)]`
`47`	`49`	`impl Byte for u8 {`
`48`	`50`	`fn to_char(self) -> char {`
`49`	`51`	`assert!(self.is_ascii());`