Releases of Zig done every 2 weeks.

Use this list if you want to use/support a newer version of Zig than the latest release.

Goals:

• help projects coordinate what version of Zig to support and when to update
• provide a summary of what's going on with Zig development

The summary for each release will prioritize "breaking" and "bigger" public facing changes at the top.

Release Table

Date	Version	The Gist
2023-06-29	0.11.0-dev.3886+0c1bfe271 summary	@xToY renamed to @yFromX
2023-05-29	0.11.0-dev.3312+ab37ab33c summary	lang: strict separation of comptime from runtime
2023-05-15	0.11.0-dev.3132+465272921 summary	std.build.*Step renamed to std.Build.Step.*
2023-04-30	0.11.0-dev.2892+fd6200eda summary	@memcpy/@memset now work with slices
2023-04-16	0.11.0-dev.2619+bd3e248c7 summary	HTTP Server added to std
2023-04-02	0.11.0-dev.2336+5b82b4004 summary
2023-03-18	0.11.0-dev.2157+f56f3c582 summary	zig build parallelism
2023-03-04	0.11.0-dev.1862+e7f128c20 summary	new for-loop syntax
2023-02-18	0.11.0-dev.1639+438b71155 summary	build API refactored
2023-02-01	0.11.0-dev.1507+6f13a725a	last version before the build API was changed

0.11.0-dev.3886+0c1bfe271 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

This release comes after a 3.5-week wait instead of the casual 2 weeks.

• @xToY renamed to @yFromX
• zig cc
  • handle --libray :path/to/lib.so (-l:path/to/lib.EXT)
  • handle -Wl,--version
  • handle -Wl,-version-script (in addition to -Wl,--version-script)
• compiler_rt add a few routines for f128
• musl upgrade from v1.2.3 to v1.2.4
• objcopy
  • add --compress-debug-sections
  • support some more elf file variants
• std.c.<OS>, std.os.<OS>
  • windows
    • use posix semantics to delete files
    • support UNC, rooted, drive relative, and namespaced/device paths
  • *bsd fix std.c.getdents
  • *bsd expose timer api
  • freebsd a few kinfo api fixes (std.c.freebsd)
  • linux
    • update kernel headers to 6.3.8
  • plan9
    • support lazy symbols
    • flesh out stdlib enough to allow not using simplified start logic
• std.mem
  • split split to splitScalar, splitSequence, splitAny
  • split tokenize to tokenizeScalar, tokenizeSequence, tokenizeAny
  • rename align(Forward|Backward)Generic to align(Forward|Backward)
• std.math
  • bigint: add Sqrt
• std.rand
  • publicize std.rand.ziggurat
• std.crypto
  • rsa remove usage of allocators
  • bcrypt allow very large passwords to be pre-hashed
  • wyhash reimplement v4.1. Changes the current hashes.
  • Ed25519 remove ``sign, verify`, `key_blinding.sign`, and `key_blinding.unblindPublicKey`
  • pcurves don't assume that points with X=0 are at infinity
• std.compress add zlib stream writer
• std.json support user-provided jsonParse method
• std.io
  • add reader.Reader.streamUntilDelimiter
  • remove FindByteOutStream, findByteOutStream
• std.Build
  • Step.Compile remove addSystemIncludeDir, addIncludeDir, addLibPath, and addFrameworkDir
• std.builtin
  • remove TypeInfo and Type.FnArg
  • replace Version with SemanticVersion
• std misc
  • Thread implement spawn, join, detach for WASI
  • cstr deprecate namespace
  • debug remove warn
  • fmt.formatValue remove e, E, z, Z, B and Bi specifiers
  • meta remove Vector, TagType
  • fifo.LinearFifo remove ensureCapacity
• std.http
  • add TlsAlert descriptions so that they can be viewed in err return traces
  • fix segfault while redirecting
  • fix getting Transfer-Encoding value
• core language
  • Use InternPool for all types and constant values #15569. This seems like a significant change (29k lines changed), but I have no clue on it's significance.
  • Simplify and compact switch ZIR, and resolve union payload captures with PTR.
• more work on autodoc
• work on macho linker
• work on spirv backend
• work on wasm backend
• work on x86_64 backend

0.11.0-dev.3312+ab37ab33c

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• core language changes:
  • more strictly separate comptime from runtime. E.g. comptime_slice.len will not be permitted, if comptime_slice is a comptime variable. Use @typeInfo(comptime_slice).Struct.fields.len
• zig cc
  • add reading from stdin, like cat main.c | zig cc -x c -
  • add --build-id (also for build.zig)
  • add -###
• std.json add streaming
• std.sort add pdqsort and heapsort
• std.debug.*TTY* move to std.debug.tty.*
• std.Thread refine stack sizes
• std.crypto
  • Poly1305 speed up by 1.5-2x
  • ghash speed up by 2.5x on wasm
  • chacha performance improvements when AVX2 and AVX512 are available
  • add std.crypto.ff -- alloc-free, constant-time field arithmetic
  • fix RSA hacks and remove allocator requirement from RSA validator
• std.c, std.os
  • linux add timer api
  • linux, freebsd: add sched_setaffinity
  • freebsd add rfork, ptrace
  • netbsd add ptrace
  • darwin *copyfile* api update
• libc
  • glibc add __dn_skipname, __dn_comp, __dn_expand workaronds for older glibc versions
  • wasi update libc to 3189cd1ceec8771e8f27faab58ad05d4d6c369ef
• std.fs.file, std.fmt, std.event.loop rename a bunch of enum parameter values to snake case
• more work on autodoc
• work on spirv backend
• work on wasm backend
• work on x86_64 backend

0.11.0-dev.3132+465272921 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• std.build.*Step renamed to std.Build.Step.*
• @memset and @memcpy fixes and wider use throughout the stdlib
• build runner: fix a race condition that results in error: FileNotFound.
• add multi-argument @min/@max
• test_runner
  • log improvements on test failures
  • disallow named test declarations with duplicate names
• std.c.darwin: add cpu affinity api for macOS
• std.meta remove tagName, use @tagName or @errorName directly
• std.fmt add parseIntSizeSuffix for numbers like 2G, 2GiB or 2Q.
• std.mem add indexOfNone*
• std.enums add tagName
• std.os.linux
  • add tc{set,get}pgrp
  • add some NUMA support
• std.c.darwin add basic darwin's host_statistics data
• std.c.freebsd
  • add domainset api
  • add kinfo_vmobject
  • add ioctl base operands
• std.c.openbsd add sigcontext/ucontext for arm64
• std.http
  • fix keepalive and buffer writes
  • use larger buffer to hit faster TLS code
  • Server
    • Response gets an allocator
    • use client recommendation for keepalive
    • use enum for reset state instead of bool
• linker: support --dynamicbase
• more work to various linkers
• work on sparc64 backend
• work on spirv backend
• work on x86_64 backend
• more work on autodoc
• autodoc: updated favicon to the latest logo mark!

0.11.0-dev.2892+fd6200eda Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• @memcpy and @memset now support slices
• @inComptime builtin added
• options added to CompileStep init, "link_libc", "single_threaded", "use_llvm", "use_lld"
• GeneralPuproseAllocator.deinit now returns Check enum with ok or leak instead of a bool
• std.json.parse now supports @Vector
• std.net.StreamServer.Options added reuse_port
• std.Build.RunStep return type of captureStdOut fixed to be FileSource
• std.http.Client
  • added redirect
  • errors updated
  • basic proxy support added
• std.http.Server
  • errors updated
  • fixed reading chunked bodies
  • deinit added to Response
• std.http.Field added
• std.http.Headers, added some clear* methods
• std.math added lerp function
• sigevent added to supported platforms
• std.os.linux, new CAP constants added, io_uring_{probe/restriction} fixed
• std.c.darwin, added subset of libproc api
• std.c.freebsd
  • added reallocf, getentropy, (cpuset/sched)_(get/set)affinity, mincore and elf_aux_info functions
  • added mcontext layout for x86
• std.c.netbsd, added pthread and cpu affinity api
• Windows
  • use NtSetInformationFile in DeleteFile to avoid silent failures and improved error handling
  • leaks fixed if LockFile fails after opening a file handle
  • stack traces during crashes fixed
• WASM
  • no longer uses simplified start.zig logic
  • cmpxchg{weak/strong}, @atomicLoad, @atomicRmw and @fence implemented
  • cmp_lt_errors_len instruction implemented
  • more runtime safety checks
• Haiku, added find_path decl and implemented selfExePath
• option exposed to produce 64-bit DWARF format
• translate-c: support brace-closed string initializers
• some fixes inside std.Thread implementation
• more work to x86_64 backend
• more work to various linkers
• more work to C backend
• more work to autodoc

0.11.0-dev.2619+bd3e248c7 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• std.http.Server added
• std.Build.CompileStep
  • removed run and install functions (big breaking change)
  • removed redundant dest_builder field (already know as step.owner)
  • deleted install_step field
  • output_dir removed, use FileSource abstraction instead
  • setName, setFilter and setTestRunner removed, pass as options instead
• std.Build.RunStep no longer closes stdin
• Update to LLVM16
• GeneralPurposeAllocator: catch invalid frees
• new objcopy options, --strip-debug, --strip-all, -add-gnu-debuglink, --only-keep-debug
• std.MultiArrayList support for tagged unions
• std.math.log10 added
• some backwards compatibility added to glibc headers
  • now possible to use fcntl with glibc 2.27 or older and the res_{,n}{search,query,querydomain} functions with glibc 2.33 or older.
• os_log/signpost/subset of Apple's QOS api added to srd.c.darwin
• madvise flags and procctl added to std.c.freebsd
• mincore syscall added for linux
• termios constants added to std.c.netbsd
• std.json.strigify now uses inferred error so it can support more error than @TypeOf(out_stream_.Error)
• std.mem.reverseIterator: accepts pointer to array and added nextPtr
• std.os.sendto now uses ws2_32 on Windows
• c_char type added
• support for the spirv target
• zig cc handle the -r flag
• linker -wrap flag added
• macos libc SDK updated to 13.3
• updated YAML parser (used for MacOS linker)
• more work to various linkers
• more work to x86_64 backend

0.11.0-dev.2336+5b82b4004 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• io_uring_prep_provide_buffers argument order changed
• some public "wrapper stuff" moved from ntdll to std.os.windows
• new builtins: @workItemId, @workGroupId, @workGroupSize
• @export now supports arbitrary values (not just declarations)
• std.MultiArrayList: set/get added to Slice
• std.enums: IndexedSet added initOne and initMany
• std.json: stringify supports [*:0]const u8
• std.os:
  • ptrace wrapper added for darwin/linux
• std.json:
  • support tuples
• coff:
  • linker work
  • dynamicbase default is now true (matches lld)
• wasm:
  • __wasm_init_memory implemented
  • atomics added
  • linker work
• libc:
  • update macOS headers
• mach linker work, hot code swapping PIC
• lots of work to x86_64 backend
• crypto:
  • Gimli and Xoodoo removed from std to be maintained outside it
  • Default to ChaCha instead of AES on CPUs without AES support

0.11.0-dev.2157+f56f3c582 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• zig build parallelism, improved APIs and improved output
  • many of the Steps' API's have been reworked
  • compiler/build runner now communicate over a binary protocol
  • command-line option -j<N> added for limiting concurrency
  • many more enhancements, see https://github.com/ziglang/zig/commit/58edefc6d1716c0731ee2fe672ec8d073651aafb
• DeviceBusy and InvalidArgument added to std.os.WriteError
• ability added to import dependencies from build.zig
• added std.Thread.Pool and std.Thread.WaitGroup
• added std.heap.ThreadSafeAllocator, wraps any allocator to make it thread safe
• std.fifo added toOwnedSlice
• Hot Code Swapping POC
• C Backend, more big integer/vector support
• std.os.linux added ptrace
• posix_spawnp declaration and usage eliminated from std, it's trash
• ArrayList.insertAssumeCapacity added
• added std.fmt.bytesToHex
• std.http: connection pooling/keep-alive, compression, relative redirects
• Crypto:
  • Kyber post-quantum key encapsulation mechanism added
  • Configurable side-channel mitigations
  • std.crypto.hash.sha3 added TurboSHAKE
• lots of x86_64 backend work

0.11.0-dev.1862+e7f128c20 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• New for-loop syntax! (Big Breaking Change)
  • zig fmt will autofix the old syntax
• --pkg-begin [name] [path] [sub_packages] --pkg-end replaced with --mod [name]:[deps]:[src] and --deps [dep],[dep],..., which define modules in a "flat" manner, i.e.

--pkg-begin foo foo.zig --pkg-begin bar bar.zig --pgk-end --pkg-end `

Now becomes:

--deps foo --mod foo:bar:foo.zig --mod bar::bar.zig

• @trap builtin added
• std.compress.zstd added
• std.io.poll added, abstraction for reading from mulitple Files in a single thread
• std.RingBuffer added
• added std.os.fchmodat, use std.fs.has_executable_bit for conditional compilation
• std.process.Child added an Id abstraction to represent a PID on posix or a HANDLE on Windows
• for Zig executables, SIGPIPE will now be set to a no-op handler by default. Add keep_sigpipe = true to root.std_options to disable this.
• zig cc will now fail hard on unsupported linker flags instead of ignoring them
  • support --no-undefined, -z undefs
  • support --sort-section, ignore --sort-common
  • detect linker color diagnostic flags
  • -z<arg> equivalent to -z <arg>
• build changes
  • modules with the same name are now reused
  • InstallRawStep renamed to ObjCopyStep
  • --build-runner option added to zig build
  • std.Build.addModule now returns the created module
• crypto
  • Keccak permutation is now public
  • crypto.hash.sha3 has added SHAKE in PR #14756

0.11.0-dev.1639+438b71155 Summary

Platform	Download Link
windows	x86_64 | x86 | aarch64
macos	aarch64 | x86_64
linux	x86_64 | x86 | aarch64 | riscv64 | powerpc64le | powerpc

• build API refactored
  • https://devlog.hexops.com/2023/zig-0-11-breaking-build-changes/
  • old "package" terminology renamed to "module"
  • combine std.build and std.build.Builder into std.Build
  • new std.Build.addModule API introduced
  • remove setPreferredReleaseMode and standardReleaseOptions in favor of standardOptimizeOption which has a future-proof options parameter.
  • setting target/optimize_mode moved to create function
  • LibExeObjStep deprecated, renamed to CompileStep
  • support for generated C headers with std.Build.addConfigHeader
  • std.Build.Cache now available in std library
• move src.type.CType to std lib, use it from std.Build, this helps with populating config.h files.
• @embedFile now supports module-mapped names the same way as @import
• added LZMA decoder
• ZON "Zig Object Notation" introduced, use build.zig.zon instead of build.zig.ini
• std.crypto: add the Ascon permutation and AES-CMAC
• @constCast and @volatileCast added