riscv-types: use #[non_exhaustive] and implement core::error::Error for result::Error

riscv-types/CHANGELOG.md

@@ -9,8 +9,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Changed
 
+- Bump MSRV to 1.81 due to `core::error::Error` trait
+- 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)
 
+### Added
+
+- Implement `core::error::Error` for `result::Error`
+
 ## riscv-pac [v0.2.0] - 2024-10-19
 
 ### Added

riscv-types/Cargo.toml

@@ -2,7 +2,7 @@
 name = "riscv-types"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.60"
+rust-version = "1.81"
 repository = "https://github.com/rust-embedded/riscv"
 authors = ["The RISC-V Team <[email protected]>"]
 categories = ["embedded", "hardware-support", "no-std"]

riscv-types/README.md

@@ -11,7 +11,7 @@ This project is developed and maintained by the [RISC-V team][team].
 
 ## Minimum Supported Rust Version (MSRV)
 
-This crate is guaranteed to compile on stable Rust 1.60 and up. It *might*
+This crate is guaranteed to compile on stable Rust 1.81 and up. It *might*
 compile with older versions but that may change in any new patch release.
 
 ## License

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 {
@@ -56,3 +57,5 @@ impl fmt::Display for Error {
         }
     }
 }
+
+impl core::error::Error for Error {}