Mark result::Error as non-exhaustive

Author: romancardenas

riscv-types/CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
+- Mark `result::Error` as `#[non_exhaustive]` to allow non-breaking new variants
 - Renamed crate to `riscv-types` as per [#351](https://github.com/rust-embedded/riscv/issues/351)
 
 ## riscv-pac [v0.2.0] - 2024-10-19

riscv-types/src/result.rs

@@ -5,6 +5,7 @@ pub type Result<T> = core::result::Result<T, Error>;
 
 /// Represents error variants for the library.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[non_exhaustive]
 pub enum Error {
     /// Attempted out-of-bounds access.
     IndexOutOfBounds {