Aether 0.472.0

What's new in 0.472.0

Fixed

• FreeBSD build break in fs.mounts. MNT_NODEV was used unguarded in
  the BSD getmntinfo backend. FreeBSD deprecated that flag and removed the
  macro in FreeBSD 10, while macOS and OpenBSD still define it, so the
  fallback path had never been compiled anywhere and the break only appeared
  on FreeBSD. The flag is now probed with #ifdef rather than keyed on the
  platform, so a future removal elsewhere degrades to omitting the option
  instead of failing the build.
• NetBSD was claimed but never buildable. It sat in the same
  getmntinfo branch, but there the call fills a struct statvfs and the
  flag field is f_flag, not f_flags, so that body could not have
  compiled. NetBSD now falls through to the unsupported branch and reports
  the error, matching the module's convention of degrading rather than
  fabricating, instead of shipping a shape nobody has built.

Added

• make ci-optional-macros, a portability probe, now step 10 of make ci. It recompiles the affected sources with each guarded platform macro
  forced absent, so both sides of every #ifdef are built on every run.
  This reproduces the FreeBSD failure above on any host: verified by
  reintroducing the bug and watching the probe fail, then restoring the fix
  and watching it pass. Registering a new guarded macro is one line.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.472.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.472.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.472.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.472.0-windows-x86_64.zip
FreeBSD	x86_64	aether-0.472.0-freebsd-x86_64.tar.gz	cross-built, not tested on FreeBSD

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.472.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-dev/aether#readme

Aether 0.471.0

What's new in 0.471.0

Fixed

• Repository URLs pointed at the pre-rename organisation. Every
  github.com/aether-lang-org/... reference (57 across the README, LLM.md,
  docs, get.sh, the release workflow, Docker scripts and the Makefile) now
  names aether-lang-dev. They had been resolving only through GitHub's
  rename redirect, a silent dependency that breaks the install one-liner,
  the release pipeline's crossbuild checkout and every documented clone
  command the day it lapses. Each rewritten target was verified to resolve,
  including the raw.githubusercontent.com one-liner and the workflow's
  repository: field, neither of which is a github.com URL. The
  servirtium-vcr links were wrong independently of the rename: that repo
  lives in the servirtium org and never existed under Aether's (LLM.md
  already said so in one place), so those five now point at
  servirtium/servirtium-vcr. CHANGELOG-archive.md keeps its historical
  URLs as written.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.471.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.471.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.471.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.471.0-windows-x86_64.zip

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.471.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-dev/aether#readme

Aether 0.470.0

What's new in 0.470.0

Fixed

• Benchmark runner reported a negative cv_pct (#1352). The
  coefficient of variation was computed as (best - worst) * 50 / mean in
  32-bit int, so for the fastest patterns (skynet and counting run in the
  hundreds of millions of msg/sec) the multiply overflowed before the
  divide and the result came out negative, on exactly the numbers most
  likely to be quoted. Span, mean and CV are now 64-bit, the run
  accumulator is too (five runs at 250M already approach the int32
  ceiling and BENCH_RUNS is user-settable), and a negative value is
  refused rather than published, since a coefficient of variation cannot
  be negative. docs/performance-benchmarks.md states the guarantee.
• Constant folding did not preserve runtime semantics for int, which
  is what let the overflow above hide during development. The folder
  evaluates in double, so (250000000 - 200000000) * 50 / 225000000
  folded to 11 while the same expression over int variables evaluated
  to -7: the literal form looked correct. The fold now wraps exactly as
  the runtime does and reports the overflow (new warning[W1003], with
  the exact value, the wrapped value, and how to widen). No code in the
  tree trips it.
• benchmarks/http/baseline_results.txt was committed containing only a
  header (#1353). The harness writes the header, starts the server, then
  measures; the server had failed to start, set -e exited, and the stub
  was committed. The generated file is removed from the tree and
  gitignored (it is machine-specific), and both HTTP harnesses now
  preflight wrk before building anything, write to a temp file and
  publish only on success (so an interrupted run leaves no truncated
  artifact), and report the actual cause when the server cannot start
  instead of a bare "failed".

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.470.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.470.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.470.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.470.0-windows-x86_64.zip

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.470.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-org/aether#readme

Aether 0.469.0

What's new in 0.469.0

Added

• Per-symbol aliasing in selective imports: import vg (rect, path as vgpath) binds the exported symbol under the alias and frees the original
  name for local use, the standard resolution when exactly one name in an
  otherwise-convenient selective import collides. Works for constants as
  well as functions, inside a module's own imports (aliases resolve when
  that module's bodies merge into a consumer), and alongside module-level
  as. The selective-import shadow guard now fires on the alias, the name
  the program actually binds, so a local path beside path as vgpath is
  legal while a local vgpath is still rejected. Closes #1345.
• worker.wait() and worker.map(items, f) (#1350). wait() blocks
  until every submitted job has completed and been delivered, running the
  completions on the calling thread and leaving the pool reusable: the
  headless batch join that previously had to be hand-rolled as a
  pending()/drain()/sleep() poll, and that pool_shutdown could not
  provide because it tears down the process-global pool (a second batch
  then returned nothing). It blocks on a condition variable, not a poll, and
  returns -1 rather than deadlocking when a main-thread poster is installed.
  map is the bounded parallel map over a list, results index-aligned with
  the input, concurrency bounded by the pool. Regression:
  tests/regression/test_worker_wait_map.ae.
• string.join(seq, sep): concatenate a *StringSeq's elements with a
  separator, the complement of string.split_to_seq and a linear-cost
  escape from the O(n^2) self-append accumulation trap (two passes, one
  exact-size allocation, binary-safe on elements and separator). The trap
  itself, and both escapes (std.strbuilder for piece-by-piece appends,
  join for an existing sequence), are now documented in the Standard
  Library Reference. Closes #1346.

Fixed

• Containers holding one string value could not both be freed (#1349).
  list_add_string_owned / map_put_string_owned are documented as
  acquiring their own reference, but they adopted the caller's instead, so
  a string literal added through them was libc-freed from .rodata at free
  time (malloc's error path aborts, which the reporter saw as a hang), and
  two containers each "owning" one pointer freed it twice. The owning
  entries now genuinely own: a refcounted string is retained, a plain
  pointer is copied. Codegen's escaping-value path moved to new
  *_string_adopted siblings, so its zero-cost ownership transfer and the
  no-per-add-leak property are unchanged. Regression:
  tests/regression/test_list_shared_string_free.ae.
• Closures returning a parameter truncated pointers. A block closure's
  return type is inferred from its body, but the inference only looked in
  the parent function's scope, so |x: ptr| { return x } fell back to int
  and the emitted C signature truncated a 64-bit pointer. The closure's own
  parameters are now consulted first.
• call(f, ...) on a fn parameter truncated pointers. The call
  builtin is typed int by default and resolved to the real type only when
  the callee is a known local closure. In -> ptr fn(...) { return call(f, v) } the enclosing function's declared return type now supplies it, which
  is the one case the closure-body resolution cannot see.
• Heap-producing calls inside string interpolation leaked their
  temporary: "[${string.join(parts, ",")}]" allocated a result that
  nothing owned, once per interpolation, in both the printf (print/println)
  and the heap-building forms. Interpolation segments that are
  heap-producing calls now bind to a drained temp that is freed after the
  segment is consumed; bare identifiers keep their owner's free.
• A sequence accumulator later passed to join leaked its whole spine.
  The seq escape walk allowlists string_seq_* callees as pure readers, but
  the string.join wrapper normalises to string_join, so a
  s = seq_cons(x, s) loop feeding a later join was conservatively marked
  escaped and every intermediate spine ref leaked. Both string_join and
  string_seq_join are now recognised as non-storing readers.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.469.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.469.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.469.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.469.0-windows-x86_64.zip

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.469.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-org/aether#readme

Aether 0.468.0

What's new in 0.468.0

See CHANGELOG.md for details.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.468.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.468.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.468.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.468.0-windows-x86_64.zip

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.468.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-org/aether#readme

Aether 0.467.0

What's new in 0.467.0

Fixed

• A caught panic leaked every allocation made since the try (#1301).
  longjmp skipped the deferred scope-exit frees, so guarded blocks (and
  every scheduler-wrapped actor step) leaked whatever they had allocated
  before panicking. A thread-local allocation journal now mirrors the armed
  deferred frees one-for-one: generated code journals a tracked local when
  its flag is armed, the single free choke point forgets on every normal
  free, ownership handoffs (return, container/actor/message adoption)
  forget at the transfer, and aether_panic() drains the innermost frame's
  still-live entries before the jump, freeing exactly the frees the jump
  would have skipped. Escaped values are never journaled, so the drain is a
  leak-fix by construction, never a use-after-free. Nested try drains
  stay frame-local; a panicking actor's step-scoped allocations are
  reclaimed before the actor is marked dead; the no-panic hot path shows no
  measurable cost on the ping-pong benchmark. Verified 405 leaks to 0 on
  the issue's alloc-then-panic matrix. Regressions:
  tests/regression/test_panic_unwind_cleanup.ae,
  tests/integration/panic_unwind_no_leak/ (50000 caught panics, RSS
  flat), tests/integration/panic_actor_step_drain/.

Added

• fs.mounts() and fs.block_info(dev) (#1118). Mount enumeration
  with per-entry source/point/fstype/options accessors: Linux
  /proc/self/mountinfo (octal escapes decoded), macOS and the BSDs
  getmntinfo(3), Windows drive letters. Block-device size/removable/
  transport via the Linux sysfs backend (partitions resolve the removable
  flag through their parent disk); other platforms report unsupported
  through the error slot rather than fabricating an answer. Regression:
  tests/regression/test_std_fs_mounts.ae.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.467.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.467.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.467.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.467.0-windows-x86_64.zip

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.467.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/aether-lang-org/aether#readme

Aether 0.466.0

What's new in 0.466.0

See CHANGELOG.md for details.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.466.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.466.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.466.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.466.0-windows-x86_64.zip
FreeBSD	x86_64	aether-0.466.0-freebsd-x86_64.tar.gz	cross-built, not tested on FreeBSD

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.466.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/nicolasmd87/aether#readme

Aether 0.465.0

What's new in 0.465.0

See CHANGELOG.md for details.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.465.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.465.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.465.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.465.0-windows-x86_64.zip
FreeBSD	x86_64	aether-0.465.0-freebsd-x86_64.tar.gz	cross-built, not tested on FreeBSD

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.465.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/nicolasmd87/aether#readme

Aether 0.464.0

What's new in 0.464.0

See CHANGELOG.md for details.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.464.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.464.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.464.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.464.0-windows-x86_64.zip
FreeBSD	x86_64	aether-0.464.0-freebsd-x86_64.tar.gz	cross-built, not tested on FreeBSD

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.464.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/nicolasmd87/aether#readme

Aether 0.463.0

What's new in 0.463.0

Fixed

• Actor ? ask answered 0 and leaked a 5s timeout when the handler used
  reply <expression> (#1324). reply count parsed but codegen silently
  dropped it (an ERROR comment in the generated C), so the ask waited out its
  timeout and read 0; the fallback also cast the reply pointer to intptr_t,
  emitting a -Wformat warning. reply <expression> is now a first-class
  scalar reply: the handler sends a typed copy through the reply slot, the ask
  site derefs it as that type (int, long, float, bool, ptr, string), and the
  GCC statement-expression path now matches the MSVC helper's deref semantics.
  An unknown message name in reply Name { ... } is a compile error instead of
  silently generated nothing. Regression:
  tests/regression/test_ask_scalar_reply.ae.
• Heap-producing calls in bare print/println argument position leaked
  per call (println(string.concat(a, b))). The interpolation form already
  freed its temporaries; the direct-argument form never did, for every heap
  producer. Both forms now route through owned-print helpers that print and
  free in one step; bound identifiers keep their scope-exit free.

Added

• string.replace(s, old, new) and string.replace_all(s, old, new)
  (#1331). Non-overlapping left-to-right matches, byte-exact and binary-safe;
  new may be empty (deletion) or longer than old; empty old returns a
  copy unchanged (Go's strings.Replace guard). Single exact-size allocation
  regardless of match count; results are heap-tracked like substring.
  Regression: tests/regression/test_std_string_replace.ae.
• ae fmt CI gate (#1302). tests/integration/fmt_gate/ enforces the
  formatter's documented safety properties on every CI run: all checked-in
  .ae sources under std/, examples/, and tests/ are canonically
  formatted (ae fmt --check), formatting is idempotent, and a formatted
  file's generated C is byte-identical to the original's (modulo #line).
  The whole tree was formatted in this change (595 files, whitespace-only);
  the IR-preservation property was verified on all 443 compiling program
  files before and after: zero differences.

Downloads

Platform	Architecture	File	Notes
Linux	x86_64	aether-0.463.0-linux-x86_64.tar.gz
macOS	x86_64	aether-0.463.0-macos-x86_64.tar.gz
macOS	arm64	aether-0.463.0-macos-arm64.tar.gz
Windows	x86_64	aether-0.463.0-windows-x86_64.zip
FreeBSD	x86_64	aether-0.463.0-freebsd-x86_64.tar.gz	cross-built, not tested on FreeBSD

Quick install

Linux / macOS

# Download the archive for your platform, then:
tar -xzf aether-0.463.0-<platform>.tar.gz
export PATH="$PWD/bin:$PATH"
ae version

Windows

Extract the .zip archive, then run bin\ae.exe version from the extracted folder.

---

Documentation: https://github.com/nicolasmd87/aether#readme