0.9.1 Release Notes

Zero the Ziguana fixing bugs

Download & Documentation

Zig is a general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.

Backed by the Zig Software Foundation, the project is financially sustainable and offers billable hours for core team members:

Please consider a recurring donation to the ZSF to help us pay more contributors!

This release contains only bug fixes.

Table of Contents §

Support Table §

Tier System §

A green check mark (✅) indicates the target meets all the requirements for the support tier. The other icons indicate what is preventing the target from reaching the support tier. In other words, the icons are to-do items. If you find any wrong data here please submit a pull request!

Tier 1 Support §

freestanding Linux 3.16+ macOS 10.13+ Windows 8.1+ WASI
x86_64 ✅ ✅ ✅ ✅ N/A
x86 ✅ #1929 🐛📦 💀 #537 🐛📦 N/A
aarch64 ✅ #2443 🐛 ✅ 🐛📦🧪 N/A
arm ✅ #3174 🐛📦 💀 🐛📦🧪 N/A
mips ✅ #3345 🐛📦 N/A N/A N/A
riscv64 ✅ #4456 🐛📦 N/A N/A N/A
sparcv9 ✅ #4931 🐛📦🧪 N/A N/A N/A
wasm32 ✅ N/A N/A N/A ✅

Tier 2 Support §

free standing Linux 3.16+ macOS 10.13+ Windows 8.1+ FreeBSD 12.0+ NetBSD 8.0+ DragonFlyBSD 5.8+ UEFI
x86_64 Tier 1 Tier 1 Tier 1 Tier 1 ✅ ✅ ✅ ✅
x86 Tier 1 ✅ 💀 ✅ 🔍 🔍 N/A ✅
aarch64 Tier 1 ✅ Tier 1 🔍 🔍 🔍 N/A 🔍
arm Tier 1 ✅ 💀 🔍 🔍 🔍 N/A 🔍
mips64 ✅ ✅ N/A N/A 🔍 🔍 N/A N/A
mips Tier 1 ✅ N/A N/A 🔍 🔍 N/A N/A
powerpc64 ✅ 📖 💀 N/A 🔍 🔍 N/A N/A
powerpc ✅ ✅ 💀 N/A 🔍 🔍 N/A N/A
riscv64 Tier 1 ✅ N/A N/A 🔍 🔍 N/A 🔍
sparcv9 Tier 1 ✅ N/A N/A 🔍 🔍 N/A N/A

Tier 3 Support §

freestanding Linux 3.16+ Windows 8.1+ FreeBSD 12.0+ NetBSD 8.0+ UEFI
x86_64 Tier 1 Tier 1 Tier 1 Tier 2 Tier 2 Tier 2
x86 Tier 1 Tier 2 Tier 2 ✅ ✅ Tier 2
aarch64 Tier 1 Tier 2 ✅ ✅ ✅ ✅
arm Tier 1 Tier 2 ✅ ✅ ✅ ✅
mips64 Tier 2 Tier 2 N/A ✅ ✅ N/A
mips Tier 1 Tier 2 N/A ✅ ✅ N/A
riscv64 Tier 1 Tier 2 N/A ✅ ✅ ✅
powerpc32 Tier 2 Tier 2 N/A ✅ ✅ N/A
powerpc64 Tier 2 ✅ N/A ✅ ✅ N/A
bpf ✅ ✅ N/A ✅ ✅ N/A
hexagon ✅ ✅ N/A ✅ ✅ N/A
amdgcn ✅ ✅ N/A ✅ ✅ N/A
sparc ✅ ✅ N/A ✅ ✅ N/A
s390x ✅ ✅ N/A ✅ ✅ N/A
lanai ✅ ✅ N/A ✅ ✅ N/A
csky ✅ ✅ N/A ✅ ✅ N/A
freestanding emscripten
wasm32 Tier 1 ✅

Tier 4 Support §

Tier 4 targets:

LLVM 13.0.1 §

This release of Zig upgrades to LLVM 13.0.1 which fixed a handful of bugs, including regressions introduced in LLVM 13.0.0. At time of writing, this hyperlink 404s because LLVM project did not provide release notes for this version.

Compiler §

Standard Library §

C Translation §

zig cc / zig c++ §

Language Reference §

There Are Still Known Bugs Remaining §

Zig has known bugs and even some miscompilations.

Zig is immature. Even with Zig 0.9.1, working on a non-trivial project using Zig will likely require participating in the development process.

When Zig reaches 1.0.0, a new requirement for Tier 1 Support will be 0 known bugs for that target.

This is the final planned release in the 0.9.x branch.

Thank You Contributors! §

These release notes have been edited down to avoid excessive detail as to not overwhelm the reader with content. In order to make sure everyone gets credit who contributed, here is a list of everyone who landed commits during this release cycle (produced with git shortlog -sne 0.9.0..0.9.1):

Thank You Sponsors! §

Ziggy the Ziguana

Special thanks to those who sponsor Zig. Because of you, Zig is driven by the open source community, rather than the goal of making profit. In particular, these fine folks sponsor Zig for $50/month or more: