The Embedded WG newsletter 9

https://internals.rust-lang.org/t/the-embedded-working-group-newsletter-9/8185

DX11 backend for gfx-rs - GSoC 2018 report

https://gfx-rs.github.io/2018/08/14/gsoc.html

This week in Rust #248 — 21 aug 2018

https://this-week-in-rust.org/blog/2018/08/21/this-week-in-rust-248/

Updates from core

the Great Generics Generalisation: HIR Followup
https://github.com/rust-lang/rust/pull/51880

implement Unsized Rvalues
https://github.com/rust-lang/rust/pull/51131

add bare-metal aarch64 target
https://github.com/rust-lang/rust/pull/53233

debug_assert to ensure that from_raw_parts is only used properly aligned
https://github.com/rust-lang/rust/pull/52972

do not suggest conversion method that is already there
https://github.com/rust-lang/rust/pull/53406

export WASM table by default
https://github.com/rust-lang/rust/pull/53237

fix usage of wasm_target_feature
https://github.com/rust-lang/rust/pull/53321

syntax: enforce attribute grammar in the parser
https://github.com/rust-lang/rust/pull/53293

move SmallVector and ThinVec out of libsyntax
https://github.com/rust-lang/rust/pull/53085

resolve: crates only exist in the type namespace
https://github.com/rust-lang/rust/pull/53335

#[feature(uniform_paths)]: allow use x::y; to resolve through self::x, not just ::x
https://github.com/rust-lang/rust/pull/52923

Self in type definitions (RFC #2300)
https://github.com/rust-lang/rust/pull/53324

rustc_codegen_llvm: restore the closure env alloca hack for LLVM 5
https://github.com/rust-lang/rust/pull/53239

make LLVM emit assembly comments with -Z asm-comments
https://github.com/rust-lang/rust/pull/53290

unions are not always trivially dropable
https://github.com/rust-lang/rust/pull/53288

cause cycle err on inf trait normalization
https://github.com/rust-lang/rust/pull/53316

NLL: optimize reassignment immutable state
https://github.com/rust-lang/rust/pull/53258

speed up NLL with HybridIdxSetBuf
https://github.com/rust-lang/rust/pull/53383

TokenStream::extend (awesome speedups!)
https://github.com/rust-lang/rust/pull/53304

don't accept non-string literals for the format string in writeln
https://github.com/rust-lang/rust/pull/53256

add the identity function as core::convert::identity (RFC #2306)
https://github.com/rust-lang/rust/pull/47562

don't panic on std::env::vars() when env is null
https://github.com/rust-lang/rust/pull/53208

use target_pointer_width for BACKTRACE_ELF_SIZE
https://github.com/rust-lang/rust/pull/53377

non-naive implementation of VecDeque.append
https://github.com/rust-lang/rust/pull/52553

stabilize use_extern_macros
https://github.com/rust-lang/rust/pull/50911

News

Announcing Rust 2018 Preview 2
https://internals.rust-lang.org/t/annoucning-rust-2018-preview-2/8218

Announcing the RLS 1.0 release candidate
https://www.ncameron.org/blog/rls-1-0-release-candidate/

How Rust’s standard library was vulnerable for years and nobody noticed
https://medium.com/@shnatsel/how-rusts-standard-library-was-vulnerable-for-years-and-nobody-noticed-aebf0503c3d6

Safe partial initialization in Rust
https://scottjmaddox.github.io/Safe-partial-initialization-in-Rust/

With undefined behavior, anything is possible
https://raphlinus.github.io/programming/rust/2018/08/17/undefined-behavior.html

Rust GraphQL webserver with Warp, Juniper, and MongoDB
http://alex.amiran.it/post/2018-08-16-rust-graphql-webserver-with-warp-juniper-and-mongodb.html

Programming Servo: Anatomy of a fetch
https://medium.com/programming-servo/anatomy-of-a-fetch-8872a5c843cd

Thanks for asking. An analysis of questions that are asked on r/rust subreddit
https://llogiq.github.io/2018/08/16/ask.html

This week in Rust and WebAssembly 6
https://rustwasm.github.io/2018/08/14/this-week-in-rust-wasm-006.html

[podcast] New Rustacean news: Rust 1.28
https://newrustacean.com/show_notes/news/rust_1_28/

Crate of the week: wasm-bindgen-futures

This week's crate is wasm-bindgen-futures, a crate to make ECMAScript promises and Rust futures interoperate. Thanks to Vikrant for the suggestion!

This week in Rust #249 — 28 aug 2018

https://this-week-in-rust.org/blog/2018/08/28/this-week-in-rust-249/

Updates from core

Stablize Iterator::find_map
https://github.com/rust-lang/rust/pull/53385

Stabilise raw_identifiers feature
https://github.com/rust-lang/rust/pull/53236

Stabilize 'attr_literals' feature
https://github.com/rust-lang/rust/pull/53044

Exhaustive integer matching
https://github.com/rust-lang/rust/pull/50912

Unify E0243, E0244, E0087, E0088, E0089, and E0090 into E0107
https://github.com/rust-lang/rust/pull/53584

Change Rc::inc_{weak,strong} to better hint optimization to LLVM
https://github.com/rust-lang/rust/pull/53080

add #[panic_handler]; deprecate #[panic_implementation]
https://github.com/rust-lang/rust/pull/53619

wasm: remove --strip-debug argument to LLD
https://github.com/rust-lang/rust/pull/53434

resolve: overhaul #![feature(uniform_paths)] error reporting
https://github.com/rust-lang/rust/pull/53427

visit all attributes for feature collection
https://github.com/rust-lang/rust/pull/53397

{to,from}_{ne,le,be}_bytes for unsigned integer types
https://github.com/rust-lang/rust/pull/53358

fix error for unsized packed struct field
https://github.com/rust-lang/rust/pull/53342

various changes to rustc_on_unimplemented
https://github.com/rust-lang/rust/pull/53295

implement Iterator::size_hint for Elaborator
https://github.com/rust-lang/rust/pull/52858

Fix unsoundness for VecDeque
https://github.com/rust-lang/rust/pull/53571

Use optimized SmallVec implementation
https://github.com/rust-lang/rust/pull/53384

Feature gate where clauses on associated type impls
https://github.com/rust-lang/rust/pull/53235

resolve suggestions should use crate:: when enabled
https://github.com/rust-lang/rust/pull/51456

Allow panicking with string literal messages inside constants
https://github.com/rust-lang/rust/pull/52011

Implement try block expressions
https://github.com/rust-lang/rust/pull/52602

Stabilize a few secondary macro features
https://github.com/rust-lang/rust/pull/53459

Merge IdxSet and IdxSetBuf
https://github.com/rust-lang/rust/pull/53520

syntax: Optimize some literal parsing
https://github.com/rust-lang/rust/pull/53521

Buffer LLVM's object output stream
https://github.com/rust-lang/rust/pull/53524

Fix NLL ICEs
https://github.com/rust-lang/rust/pull/53580

Rename TyVariants and variants
https://github.com/rust-lang/rust/pull/53581

Use SmallVec for SmallCStr
https://github.com/rust-lang/rust/pull/53644

News

Experimental async / await support for Tokio
https://tokio.rs/blog/2018-08-async-await/

Nightly Rust is switching to use LLD (LLVM's new built-in linker) as the default linker for ARM microcontrollers
https://rust-embedded.github.io/blog/2018-08-2x-psa-cortex-m-breakage/

CVE-2018-1000657: buffer overflow in VecDeque::reserve() in Rust 1.3 through 1.21 allows arbitrary code execution
https://www.reddit.com/r/rust/comments/9926jq/cve20181000657_buffer_overflow_in_vecdequereserve/

More on the RLS and a 1.0 release
https://www.ncameron.org/blog/more-on-the-rls-and-a-1-0-release/

Another look at the pinning API
https://boats.gitlab.io/blog/post/rethinking-pin/

Oxidizing sourmash: Python and FFI
https://blog.luizirber.org/2018/08/23/sourmash-rust/

Reading files quickly in Rust
https://boyter.org/posts/reading-files-quickly-in-rust/

Calling C# natively from Rust
https://medium.com/@chyyran/calling-c-natively-from-rust-1f92c506289d

Programming Servo: the makings of a task-queue
https://medium.com/programming-servo/programming-servo-the-makings-of-a-task-queue-b4138cd246ca

Programming Servo: The debug way
https://medium.com/coding-neutrino-blog/programming-servo-the-debug-way-5db01f09b7f4

Easy proc_macro_derives with synstructure
https://llogiq.github.io/2018/08/25/synstruct.html

Two kinds of invariants, proposing rules for unsafe code concerning uninitialized data
https://www.ralfj.de/blog/2018/08/22/two-kinds-of-invariants.html

Next Rust Fest to take place in Rome on 24 and 25 November
https://blog.rustfest.eu/next-stop-rome

Crate of the week: generational-arena

This week's crate is generational-arena, a safe arena allocator that allows deletion without suffering from the ABA problem by using generational indices. Thanks to Willi Kappler for the suggestion!

This week in Rust #250 — 04 sep 2018

https://this-week-in-rust.org/blog/2018/09/04/this-week-in-rust-250/

Updates from core

enable ThinLTO with incremental compilation
https://github.com/rust-lang/rust/pull/53673

build LLVM with ThinLTO enabled (2nd attempt)
https://github.com/rust-lang/rust/pull/53245

update LLVM submodule (mainly WASM improvements)
https://github.com/rust-lang/rust/pull/53611

ADD more Cortex-R targets
https://github.com/rust-lang/rust/pull/53679

change the default linker of the ARM Cortex-M targets to rust-lld
https://github.com/rust-lang/rust/pull/53648

begin preparation for Rust 2018
https://github.com/rust-lang/crates.io/pull/1467

fix promotion stability hole in old borrowck
https://github.com/rust-lang/rust/pull/53699

Miri engine cleanup
https://github.com/rust-lang/rust/pull/53671

Miri refactor: Final round
https://github.com/rust-lang/rust/pull/53779

use partial but correct vtable layout
https://github.com/rust-lang/rust/pull/53757

replace AccumulateVec by SmallVec
https://github.com/rust-lang/rust/pull/53659

HybridIdxSet tweaks
https://github.com/rust-lang/rust/pull/53656

NLL: experiment with inverting liveness
https://github.com/rust-lang/rust/pull/53314

fix NLL ICEs
https://github.com/rust-lang/rust/pull/53580

set rustfix auto-applicability for a few lints
https://github.com/rust-lang/rust/pull/53655

use FxHash{Map, Set} instead of the default Hash{Map, Set}
https://github.com/rust-lang/rust/pull/53472

various small diagnostic and code clean up
https://github.com/rust-lang/rust/pull/53842

save-analysis: record info for the types in where clauses
https://github.com/rust-lang/rust/pull/53838

fix u32 steps_between for 16-bit systems
https://github.com/rust-lang/rust/pull/53755

reduce number of syscalls in rand
https://github.com/rust-lang/rust/pull/53725

reoptimize VecDeque::append
https://github.com/rust-lang/rust/pull/53564

add more const int ops
https://github.com/rust-lang/rust/pull/53697

make std::intrinsics::transmute() const fn
https://github.com/rust-lang/rust/pull/53535

impl PartialEq for TryFromIntError
https://github.com/rust-lang/rust/pull/53476

add --allow-staged to cargo fix
https://github.com/rust-lang/cargo/pull/5943

add rust-gdbgui noscript
https://github.com/rust-lang/rust/pull/53774

set cfg(rustdoc) when rustdoc is running on a crate
https://github.com/rust-lang/rust/pull/53076

rustbuild: distribute libLLVM.so with rustc
https://github.com/rust-lang/rust/pull/53828

News

Why Rust closures are (somewhat) hard.
http://stevedonovan.github.io/rustifications/2018/08/18/rust-closures-are-hard.html

Rust pattern: Iterating an over a Rc<Vec<T>>.
http://smallcultfollowing.com/babysteps/blog/2018/09/02/rust-pattern-iterating-an-over-a-rc-vec-t/

FlatBuffers adds support for Rust.
https://github.com/google/flatbuffers/pull/4898

RPCS3 and Dolphin on macOS using gfx-portability.
https://gfx-rs.github.io/2018/09/03/rpcs3-dolphin.html

Learning generics in Rust.
https://tutorialedge.net/rust/learning-generics-in-rust/

Feasible functors in Rust.
https://varkor.github.io/blog/2018/08/28/feasible-functors-in-rust.html

Programming Servo: A generic “worker event-loop”.
https://medium.com/programming-servo/programming-servo-a-generic-worker-event-loop-400a6f113a60

Serde deserialize This or That into u64.
https://noyez.gitlab.io/post/2018-08-28-serilize-this-or-that-into-u64/

This Week in Rust and WebAssembly 7.
https://rustwasm.github.io/2018/09/04/this-week-in-rust-wasm-007.html

The Embedded WG newsletter 10.
https://rust-embedded.github.io/blog/2018-08-28-newsletter-10/

Crate of the week: cgroups

This week's crate is cgroups, a native Rust library for managing control groups under Linux. Thanks to yoshuawuyts for the suggestion!

This week in Rust #251 — 11 sep 2018

https://this-week-in-rust.org/blog/2018/09/11/this-week-in-rust-251/

Updates from core

introduce Custom Test Frameworks
https://github.com/rust-lang/rust/pull/53410

ThinLTO: don't keep files open after mmaping them
https://github.com/rust-lang/rust/pull/53962

rustc: prepare the atomics feature for wasm
https://github.com/rust-lang/rust/pull/53878

if- and while-let-chains, take 2 - edition changes
https://github.com/rust-lang/rust/pull/53854

resolve: relax shadowing restrictions on macro-expanded macros
https://github.com/rust-lang/rust/pull/53778

proc_macro::Group::span_open and span_close
https://github.com/rust-lang/rust/pull/53902

fix incorrect outer function type parameter message
https://github.com/rust-lang/rust/pull/53960

fix is_non_exhaustive confusion between structs and enums
https://github.com/rust-lang/rust/pull/53721

rewrite precompute_borrows_out_of_scope for fewer hash table lookups
https://github.com/rust-lang/rust/pull/53942

make loop detector only consider reachable memory
https://github.com/rust-lang/rust/pull/52626

miri engine: make sure we do not copy unsized data
https://github.com/rust-lang/rust/pull/53883

optimize miri checking of integer array/slices
https://github.com/rust-lang/rust/pull/53903

NLL: do not propagate closure requirements if we can prove them locally
https://github.com/rust-lang/rust/pull/53745

NLL: teach SCC about 'static
https://github.com/rust-lang/rust/pull/53327

implement Unpin for Box, Rc, and Arc
https://github.com/rust-lang/rust/pull/53874

add trim_start, trim_end etc.; deprecate trim_left, trim_right, etc. in future
https://github.com/rust-lang/rust/pull/52994

allow to check if sync::Once is already initialized
https://github.com/rust-lang/rust/pull/53027

stabilize #[panic_handler]
https://github.com/rust-lang/rust/pull/51366

rustdoc: show trait impl docs
https://github.com/rust-lang/rust/pull/51885

rustbuild: tweak LLVM distribution layout
https://github.com/rust-lang/rust/pull/53955

News

ripgrep 0.10.0 released (PCRE2 and multi-line support).
https://github.com/BurntSushi/ripgrep/releases/tag/0.10.0

rustfmt, compiled to wasm, in a webpage.
https://alexcrichton.github.io/rustfmt-wasm/

Rust faster – SIMD edition.
https://llogiq.github.io/2018/09/06/fast.html

2019 Strategy for rustc and the RLS.
https://internals.rust-lang.org/t/2019-strategy-for-rustc-and-the-rls/8361

Adventures in Rust: Futures and Tokio.
http://bryangilbert.com/post/code/rust/adventures-futures-tokio-rust/

From Rust to beyond, episode 4: The C galaxy. An end-to-end example, includes cbindgen and clang.
https://mnt.io/2018/09/11/from-rust-to-beyond-the-c-galaxy/

Parallelizing PNG, part 5: choosing Rust for mtpng.
https://brionv.com/log/2018/09/09/parallelizing-png-part-5-choosing-rust-for-mtpng/

Tower Web - Expanding the middleware stack.
https://medium.com/@carllerche/tower-web-expanding-the-middleware-stack-f9bf55bfa109

Beware the rust cache on Travis (or why you should use it with care).
https://levans.fr/rust_travis_cache.html

RustFest Rome CFP is open and supporter tickets available.
https://blog.rustfest.eu/this-week-in-rustfest-0-cfp-and-tickets

Videos from RustConf 2018.
https://www.youtube.com/playlist?list=PL85XCvVPmGQi3tivxDDF1hrT9qr5hdMBZ

Rust Embedded WG newsletter 11.
https://rust-embedded.github.io/blog/2018-09-09-newsletter-11/

Crate of the week: cargo-src

This week's crate is cargo-src, a Rust source browser with syntax highlighting, jump to def, smart search and much more. Thanks to mark-i-m for the suggestion!

Framework-agnostic routing library: rouste

This week in Rust #252 — 18 sep 2018

https://this-week-in-rust.org/blog/2018/09/18/this-week-in-rust-252/