Swift Atomics 1.2.0

This minor release adds support for Swift 5.9.

This release contains no API-level additions nor any other visible changes to stable interfaces; the version number bump is simply acknowledging that this release ships a full rewrite of package internals -- it isn't just a regular bug fix release.

Changes

• This release requires Swift 5.7 or later. (Clients on older toolchains will automatically remain on the 1.0 or 1.1 releases.)
• The package now supports being used as a dependency in projects that have C++ interoperability enabled in Swift 5.9.
• On Swift 5.9+, atomic operations are now implemented using native Swift compiler builtins. The package no longer forwards to C atomics when built on newer toolchains.

Fixes

• Minor documentation fixes.

Pull Requests

• [Xcode] Set a code sign identity by @lorentey in #85
• [Xcode] Don’t use a bridging header in a framework target by @lorentey in #87
• Fix reference doc variable references by @rolson in #89
• Avoid C atomic operations in Swift 5.9+ by @lorentey in #90
• Regenerate sources by @lorentey in #91
• Fix version-specific manifest for 5.6..<5.9 by @lorentey in #93
• [_AtomicShims] On Darwin, ensure we link against libswiftCore using assembly shenanigans by @lorentey in #97
• Avoid using symlinks for package files by @ktoso in #100
• Reorganize sources for future work by @lorentey in #101
• Fix alignment issues with double-wide atomics on i386 by @lorentey in #102
• [CMake] Do not list .gyb files as sources by @lorentey in #105
• Drop support for Swift 5.6 by @lorentey in #103
• Not so minor prerelease fixups/changes by @lorentey in #106

New Contributors

• @rolson made their first contribution in #89
• @ktoso made their first contribution in #100

Full Changelog: 1.1.0...1.2.0

Thank you very much to everyone who contributed to this release!