carbon-language/carbon-lang v0.0.0-0.nightly.2026.03.21

Nightly build 2026.03.21

on GitHub

What's Changed

Toolchain and implementation changes 🛠️

• Restructure pattern matching to support producing results by @geoffromer in #6929
• Create a placement operator new directly. by @zygoloid in #6941
• Handle errors in form binding without crashing. by @geoffromer in #6936
• Return a NewAnyPhase result for RequireCompleteType with a CompleteTypeWitness value by @danakj in #6939
• adds witness support for associated types by @cjdb in #6937
• Add missing library in test by @jonmeow in #6945

Full Changelog: v0.0.0-0.nightly.2026.03.20...v0.0.0-0.nightly.2026.03.21