Release v0.16.0-r5 · embed-zig/esp-zig-bootstrap

Automated release for v0.16.0-r5.

Source commit: 122d24f47217908699f3c19b7468d97647a98dfd

Highlights

This release introduces support for Zig toolchain version 0.16.0 with enhancements for the ESP Xtensa platform.
Significant improvements have been made to the Xtensa compiler, including fixes for optional enum lowering regressions and reliable patch application.

Xtensa Compiler Enhancements:
- Fixed regressions related to optional enum lowering to ensure accurate decoding in various situations.
- Resolved an issue with patch application from version 0.15.2 of the GNU toolchain.
CI and Release Automation Improvements:
- Transitioned Linux release processes to a hosted runner group to enhance performance and reliability.
- Improved error reporting for skipped release target failures.
New Regression Tests:
- Added tests for validating optional enum handling, specifically for xtensa-optional-enum-return and xtensa-optional-enum-lookup.

Enhanced validation coverage for the Xtensa compiler includes broader tests for optional enum lookup behavior and assembly output correctness.
The release focuses on stabilizing the handling of enums in the Xtensa backend to ensure reliability for developers working with Zig on ESP hardware.