2016-05-23.md

Subteam report: libs 2016-05-23

This week we decided on API stabilizations for the 1.10 release:

• static sync primitives - https://github.com/rust-lang/rust/issues/27717
  • deprecate
  • recommend lazy static, which is destined for std eventually
• OpenOptionsExt on windows - https://github.com/rust-lang/rust/issues/27720
  • stabilize -- alex will verify
• char encoding - https://github.com/rust-lang/rust/issues/27784
  • stablize write_utf8
  • don't stabilize others
• OpenOptions expansion - https://github.com/rust-lang/rust/issues/30014
  • stabilize after verification
• Weak::new - https://github.com/rust-lang/rust/issues/30425
  • stabilize + add default
• panic hooks - https://github.com/rust-lang/rust/issues/30449
  • stabilize
• CStr::from_bytes_with_nul - https://github.com/rust-lang/rust/issues/31190
  • stabilize
• SystemTime + fs::Metadata - https://github.com/rust-lang/rust/issues/31399
  • stabilize
• compare_exchange - https://github.com/rust-lang/rust/issues/31767
  • stabilize
• is_empty - https://github.com/rust-lang/rust/issues/32111
  • deprecate
• exposing keys from Entry - https://github.com/rust-lang/rust/issues/32281
  • stabilize
• unix sockets - https://github.com/rust-lang/rust/issues/32312
  • stabilize
• Map values_mut - https://github.com/rust-lang/rust/issues/32551
  • stabilize
• binary_search_by_key - https://github.com/rust-lang/rust/issues/33018
  • stabilize

We also discussed the policy around Rust compiler version support and rust-lang crates, which resulted in a new policy RFC.

Finally, this week saw a major RFC covering the regex crate, which will ultimately transition it to 1.0 and full rust-lang status.

Highlights

Dashboard

High priority issues

Issues needing a decision

RFC phase

• PR #1218: RFC: Checked integer conversions
• PR #1309: OS string string-like interface
• PR #1325: Add panic-safe slicing methods
• PR #1353: Add retain_mut to Vec and VecDeque
• PR #1379: Change thread local variables to only accept async-signal-safe types.
• PR #1502: libstd::sys, the great libstd refactor
• PR #1533: Keyless Entry
• PR #1534: RFC: Saturating and checking integer wrapper types
• PR #1568: Stream wrappers standardization
• PR #1574: More api documentation conventions
• PR #1581: FusedIterator marker trait and iter::Fuse specialization
• PR #1583: Add parse_generics! and parse_where! macros
• PR #1596: RFC: Float-free libcore
• PR #1618: Ergonomic format_args!
• PR #1619: Specify Rust compatibility of nursery crates
• PR #1620: regex 1.0

Implementation phase

• Issue #5016: implement "dynamic drop" semantics using flags on the stack rather than zeroing
• Issue #19986: Tracking issue for collections reform part 2 (RFC 509)
• Issue #32310: Tracking issue for {Vec,String}::splice
• Issue #32311: Tracking issue for Range*::contains
• Issue #32313: Tracking issue for Ipv6Addr octet methods
• Issue #32630: Tracking issue for {VecDeque,LinkedList}::contains
• Issue #32838: Allocator traits (tracking issue for RFC 1398)
• Issue #32976: Tracking issue for adding more atomic integer types
• Issue #33417: Tracking issue for TryFrom/TryInto traits

Stabilization phase

• FCP Issue #27717: Tracking issue for static synchronization primitives
• FCP Issue #27720: Tracking issue for OpenOptionsExt on Windows
• FCP Issue #27784: Tracking issue for char encoding methods
• FCP Issue #30014: Tracking issue for OpenOptions expansion
• FCP Issue #30425: Tracking issue for downgraded_weak (No way to construct std::rc::Weak without a strong reference)
• FCP Issue #30449: Custom panic handlers in the standard library
• FCP Issue #31190: Tracking issue for CStr::from_bytes_with_nul
• FCP Issue #31399: Tracking issue for SystemTime accessors from fs::Metadata
• FCP Issue #31767: Tracking issue for compare_exchange
• FCP Issue #32111: Tracking issue for the Peekable::is_empty function
• FCP Issue #32281: Add methods exposing keys of BTreeMap and HashMap entries
• FCP Issue #32312: Tracking issue for Unix Sockets in the standard library
• FCP Issue #32551: Add values_mut to {BTree, Hash}Map
• FCP Issue #33018: Tracking issue for slice::binary_search_by_key
• Issue #5016: implement "dynamic drop" semantics using flags on the stack rather than zeroing
• Issue #24263: discriminant_value intrinsic -- tracking issue for 639
• Issue #27389: Tracking issue for changing the global, default allocator (RFC 1183)
• Issue #27700: Tracking issue for allocation APIs
• Issue #27703: Tracking issue for stabilizing randomness
• Issue #27705: Tracking issue for DNS in std::net
• Issue #27708: Tracking issue for as_unsafe_cell stabilization
• Issue #27709: Tracking issue for Ipv{4,6}Addr convenience methods
• Issue #27716: Tracking issue for thread_local_state stabilization
• Issue #27721: Tracking issue for string patterns
• Issue #27726: Tracking issue for access to Formatter flags/options
• Issue #27730: Tracking issue for NonZero/Unique/Shared stabilization
• Issue #27731: Tracking issue for SIMD support
• Issue #27732: Tracking issue for DST coercions (coerce_unsized, unsize) stabilization
• Issue #27733: Tracking issue for borrow_state stabilization
• Issue #27739: Tracking issue for Zero/One/iter_arith stabilization
• Issue #27741: Tracking issue for step_by stabilization
• Issue #27745: Tracking issue for type_id stabilization
• Issue #27747: Tracking issue for slice_concat_ext stabilization
• Issue #27749: Tracking issue for Reflect stabilization
• Issue #27751: Tracking issue for raw stabilization
• Issue #27752: Tracking issue for float_extras stabilization
• Issue #27778: Tracking issue for core::array
• Issue #27779: Tracking issue for placement new
• Issue #27783: Tracking issue for location of facade crates
• Issue #27787: Tracking issue for sorted collection ranges
• Issue #27788: Tracking issue for VecDeque Extras
• Issue #27791: Tracking issue for str escaping
• Issue #27794: Tracking issue for extra linked list methods
• Issue #27800: Tracking issue for channel selection
• Issue #27802: Tracking issue for Read::chars
• Issue #27812: Tracking issue for crates that are compiler dependencies
• Issue #28147: Tracking issue for BinaryHeap::{push_pop, replace}
• Issue #28237: Tracking issue for ... inclusive ranges (RFC #1192)
• Issue #28356: Tracking issue for Arc/Rc extras
• Issue #28796: Tracking issue for FnBox()
• Issue #29553: Tracking issue for #[bench] and benchmarking support
• Issue #29625: Tracking issue for Fn traits (unboxed_closures feature)
• Issue #30172: Implement placement-in protocol for relevant data structures
• Issue #30877: Tracking issue for RangeArgument
• Issue #31398: Tracking issue for CommandExt::before_exec
• Issue #32110: Tracking issue for libcore prelude traits
• Issue #32838: Allocator traits (tracking issue for RFC 1398)
• Issue #33082: Tracking issue for alloc_system/alloc_jemalloc
• Issue #33444: Tracking issue for Cell::get_mut and RefCell::get_mut
• Issue #33577: Tracking issue for std::sync::Once poisoning