Merge pull request #1090 from Mark-Simulacrum/1.68.1

1.68.1 release

Author: Mark-Simulacrum

posts/2023-03-23-Rust-1.68.1.md

@@ -0,0 +1,46 @@
+---
+layout: post
+title: "Announcing Rust 1.68.1"
+author: The Rust Release Team
+release: true
+---
+
+The Rust team has published a new point release of Rust, 1.68.1. Rust is a
+programming language that is empowering everyone to build reliable and
+efficient software.
+
+If you have a previous version of Rust installed via rustup, you can get 1.68.1 with:
+
+```
+rustup update stable
+```
+
+If you don't have it already, you can [get `rustup`][install]
+from the appropriate page on our website, and check out the
+[detailed release notes for 1.68.1][notes] on GitHub.
+
+[install]: https://www.rust-lang.org/install.html
+[notes]: https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1681-2023-03-23
+
+## What's in 1.68.1 stable
+
+Rust 1.68.1 stable primarily contains a change to how Rust's CI builds the
+Windows MSVC compiler, no longer enabling LTO for the Rust code. This led to a
+[miscompilation](https://github.com/rust-lang/rust/issues/109067) that the Rust
+team is debugging, but in the meantime we're reverting the change to enable
+LTO.
+
+This is currently believed to have no effect on wider usage of ThinLTO. The
+Rust compiler used an unstable flag as part of the build process to enable
+ThinLTO despite compiling to a dylib.
+
+There are a few other regression fixes included in the release:
+
+* [Fix building the compiler with `--enable-local-rust`](https://github.com/rust-lang/rust/pull/109111/)
+* [Treat `$prefix-clang` as `clang` in linker detection code](https://github.com/rust-lang/rust/pull/109156)
+* [Fix a panic in the compiler](https://github.com/rust-lang/rust/pull/108162)
+
+### Contributors to 1.68.1
+
+Many people came together to create Rust 1.68.1. We couldn't have done it
+without all of you. [Thanks!](https://thanks.rust-lang.org/rust/1.68.1/)