add comment to impl !Error for &str

Lukas Markeffsky · Lukas Markeffsky · commit bdb0c7f427c2 · 2023-03-30T22:19:28.000+02:00
diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs
@@ -2655,5 +2655,6 @@ impl_fn_for_zst! {
     };
 }
 
+// This is required to make `impl From<&str> for Box<dyn Error>` and `impl<E> From<E> for Box<dyn Error>` not overlap.
 #[stable(feature = "rust1", since = "1.0.0")]
 impl !crate::error::Error for &str {}

Original file line number	Diff line number	Diff line change
`@@ -2655,5 +2655,6 @@ impl_fn_for_zst! {`
`2655`	`2655`	`};`
`2656`	`2656`	`}`
`2657`	`2657`
	`2658`	+// This is required to make `impl From<&str> for Box<dyn Error>` and `impl<E> From<E> for Box<dyn Error>` not overlap.
`2658`	`2659`	`#[stable(feature = "rust1", since = "1.0.0")]`
`2659`	`2660`	`impl !crate::error::Error for &str {}`