2016-02-01.md

Subteam report: libs 2016-02-01

Highlights

This week we moved several RFCs into final comment period (FCP):

• FCP PR #1299: std::sync::mpsc::SharedSender
• FCP PR #1353: Add retain_mut to Vec and VecDeque
• FCP PR #1359: RFC: Add CommandExt::{exec, before_exec}
• FCP PR #1415: RFC: Deprecate type aliases in std::os::*::raw
• FCP PR #1423: Amend RFC 1270 to describe actual implementation

We also selected unstable APIs to consider for stabilization or deprecation in Rust 1.8:

• str::encode_utf16
  • Recommendation: stabilize (renamed from utf16_units)
• scoped tls
  • Recommendation: deprecate (move to crates.io probably)
• cell extras
  • Recommendation: stabilize map, deprecate filter_map, also handle other guard types
• Condvar::wait_timeout_with
  • Recommendation: deprecate
• raw ptr as_ref
  • On the fence, comments welcome!
• make_ascii_uppercase
  • Recommendation: deprecate
• drop_in_place
  • Recommendation: stabilize, but would like comments on *mut T vs &mut T
• overloaded += operators
  • Recommendation: stabilize
• std::time
  • Recommendation: stabilize, but rename duration_from_earlier
• panic::recover
  • Recommendation: neither stabilize nor deprecate, but we would like to make a decision for the 1.9 release, so we're trying to instigate early discussion about this controversial API.

Dashboard

High priority issues

• Issue #29008: stdlib Path has inconsistent normalisation behaviour

Issues needing a decision

• Issue #31161: Implement ToSocketAddrs for &[SocketAddr]

RFC phase

• FCP PR #1299: std::sync::mpsc::SharedSender
• FCP PR #1353: Add retain_mut to Vec and VecDeque
• FCP PR #1359: RFC: Add CommandExt::{exec, before_exec}
• FCP PR #1415: RFC: Deprecate type aliases in std::os::*::raw
• FCP PR #1423: Amend RFC 1270 to describe actual implementation
• PR #1218: RFC: Checked integer conversions
• PR #1258: Add macros to get the values of configuration flags
• PR #1309: OS string string-like interface
• PR #1325: Add panic-safe slicing methods
• PR #1379: Change thread local variables to only accept async-signal-safe types.
• PR #1393: Expand try! macro with additional case
• PR #1394: Add maybe! macro equivalent to try!
• PR #1398: Allocators, take III
• PR #1419: Safe memcpy for slices ([T]::copy_from)
• PR #1432: String/Vec::replace_range(RangeArgument, IntoIterator)
• PR #1434: 'Contains' method for ranges
• PR #1443: Extend atomic compare_and_swap
• PR #1461: Move some net2 functionality into libstd
• PR #1465: add some! macro for unwrapping Option more safely
• PR #1467: Stabilize volatile read and write
• PR #1479: Unix socket support in the standard library
• PR #1480: RFC proposal for thread affinity

Implementation phase

• Issue #19986: Tracking issue for collections reform part 2 (RFC 509)
• Issue #21923: Audit raw pointer to reference conventions
• Issue #22477: Tracking issue for Add a generic string pattern matching API (RFC 528)
• Issue #23055: Tracking issue for Replace Vec::drain by a method that accepts a range parameter (RFC 574)
• Issue #24263: discriminant_value intrinsic -- tracking issue for 639
• Issue #27517: Add ByNeed and Predicate traits
• Issue #28628: Tracking issue for forbidding wildcard deps on crates.io
• Issue #29453: Add Capacity/length methods for OsString

Stabilization phase

• FCP Issue #27714: Tracking issue for str_utf16 stabilization
• FCP Issue #27715: Tracking issue for Scoped TLS
• FCP Issue #27719: Tracking issue for recover stabilization
• FCP Issue #27746: Tracking issue for cell_extras stabilization
• FCP Issue #27748: Tracking issue for wait_timeout_with stabilization
• FCP Issue #27780: Tracking issue for <*mut T, *const T>::{as_ref, as_mut_ref}
• FCP Issue #27809: Tracking issue for make_ascii_{upper,lower}case
• FCP Issue #27908: Tracking issue for drop_in_place
• FCP Issue #28235: Tracking issue for overloaded += operators (RFC 953) (feature augmented_assignments)
• FCP Issue #29866: Expand the std::time module
• 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 #27717: Tracking issue for static synchronization primitives
• Issue #27720: Tracking issue for OpenOptionsExt on Windows
• 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 #27754: Tracking issue for str_char 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 #27784: Tracking issue for char encoding methods
• 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 #27811: Tracking issue for CommandExt::session_leader
• Issue #27812: Tracking issue for crates that are compiler dependencies
• Issue #28050: Set recovery methods
• Issue #28147: Tracking issue for BinaryHeap::{push_pop, replace}
• Issue #28356: Tracking issue for Arc/Rc extras
• Issue #28796: Tracking issue for FnBox()
• Issue #29553: Tracking issue for #[bench] and benchmarking support
• Issue #29791: Tracking issue for getting pthread_t from JoinHandle
• Issue #30449: Custom panic handlers in the standard library
• Issue #30752: Tracking issue for panic::propagate
• Issue #30877: Tracking issue for RangeArgument
• Issue #31190: Tracking issue for CStr::from_bytes_with_nul