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Libs proposal: Policy for constifying traits and trait implementations

Status: Open.

#782 In rust-lang/libs-team;

· tgross35 opened on Apr 25, 2026

ACP: Support NonZeroU16 in ToSocketAddrs; SocketAddr's From Implementation

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#781 In rust-lang/libs-team;

· edward-shen opened on Apr 25, 2026

ACP: OsStr::{split_at, split_at_checked}

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#780 In rust-lang/libs-team;

· ChrisDenton opened on Apr 23, 2026

floating-point NaN payload functions

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#779 In rust-lang/libs-team;

· phayes opened on Apr 23, 2026

ACP: Add char::to_u32 to access underlying value

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#778 In rust-lang/libs-team;

· okaneco opened on Apr 21, 2026

ACP Vec<u8>::push_utf8 for no-memcpy UTF8 in a general bytes buffer

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#777 In rust-lang/libs-team;

· jmillikin opened on Apr 19, 2026

unchecked_wrapping_rem and checked_wrapping_rem for iN

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#775 In rust-lang/libs-team;

· Apersoma opened on Apr 8, 2026

Combined div_rem function (and variants) for ints and uints

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#774 In rust-lang/libs-team;

· Apersoma opened on Apr 8, 2026

ptr::sentinel: ptr::dangling that cannot alias valid pointers

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#773 In rust-lang/libs-team;

· CAD97 opened on Apr 7, 2026

introduce an accessor method for std::fs::ReadDir that lets us get the path associated with the ReadDir iterator

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#771 In rust-lang/libs-team;

· asder8215 opened on Apr 5, 2026

NonZeroLayout for Allocator

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#770 In rust-lang/libs-team;

· pitaj opened on Apr 1, 2026

Allocator: split deallocation into its own trait

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#769 In rust-lang/libs-team;

· pitaj opened on Mar 31, 2026