27 Pull requests merged by 14 people

• [cxx-interop] Do not consider function types fragile

  #84040 merged Sep 1, 2025

• [CS] Add debug message when hitting too complex limit

  #84042 merged Sep 1, 2025

• [cxx-interop] Add attribute to hide Swift declarations from interop

  #82616 merged Sep 1, 2025

• [test] Add some more known crashers

  #84039 merged Sep 1, 2025

• [Mem2Reg] Add end_lifetime for more trivial case non-trivial enums.

  #84022 merged Sep 1, 2025

• [Concurrency] prevent two tests from running on OSes without ...

  #84021 merged Sep 1, 2025

• [Concurrency] Add availability to one of the ExecutorJob extensions

  #84018 merged Sep 1, 2025

• [IDE] Erase archetypes without declaration generic signature

  #83652 merged Sep 1, 2025

• New SIL LICM pass

  #83988 merged Sep 1, 2025

• [CS] Avoid unnecessary type variables when opening ErrorTypes

  #84030 merged Sep 1, 2025

• build.ps1: extract SDKROOT in Build-ExperimentalSDK

  #84016 merged Aug 31, 2025

• Include remarks in SourceKit diagnostics responses

  #84031 merged Aug 31, 2025

• [presets] Escalate uninitialized warnings to errors in macOS smoke test

  #84034 merged Aug 31, 2025

• [test] Adjust IRGen test to succeed both on main and rebranch

  #84033 merged Aug 31, 2025

• [IDE] Remove fallback type-checking logic

  #83593 merged Aug 31, 2025

• Optimizer: some small fixes and improvements for exclusivity checking

  #83999 merged Aug 31, 2025

• SIL: only use canonical substitution maps in SIL

  #84013 merged Aug 30, 2025

• [6.2] [AST & Runtime] Correctly mangle extended existentials with inverse requirements

  #83953 merged Aug 30, 2025

• [CS] Strengthen check for completion in CSApply

  #84005 merged Aug 30, 2025

• build.ps1: remove some unnecessary flags

  #84025 merged Aug 30, 2025

• [CS] Allow contextual types with errors

  #84003 merged Aug 30, 2025

• [rbi] Make all PartitionOpErrors noncopyable types.

  #84020 merged Aug 30, 2025

• silgen: allow borrow of subscript for noncopyables

  #83959 merged Aug 30, 2025

• Use std::map::insert to avoid a call to std::piecewise_construct (NFC)

  #84019 merged Aug 29, 2025

• 6.2.1: [AllocBoxToStack] Don't destroy in dead-ends.

  #83995 merged Aug 29, 2025

• [rbi] Teach RegionIsolation how to properly error when 'inout sending' params are returned.

  #83903 merged Aug 29, 2025

• [Concurrency] Change availability for a TaskPriority extension

  #83990 merged Aug 29, 2025

9 Pull requests opened by 8 people

• [Windows] ClangImporter: Work around duplicate link declaration error…

  #84017 opened Aug 29, 2025

• [6.2] `@cdecl` functions and enums, behind experimental feature flags (Take 2)

  #84023 opened Aug 29, 2025

• Fill in two missing functions for Embedded Swift

  #84024 opened Aug 29, 2025

• [wasm] Add support for __builtin_va_list type mapping

  #84029 opened Aug 30, 2025

• Add a new frontend flag to emit inferred types at a given cursor position as remarks

  #84032 opened Aug 30, 2025

• [CS] Avoid increasing score for unbound outer type vars for completion

  #84036 opened Aug 31, 2025

• [DNM] Experiment: Try skipping unavailable/disfavored choices for completion

  #84043 opened Sep 1, 2025

• Ownership support for LICM

  #84045 opened Sep 1, 2025

• [Reflection] Fix task reflection to strip signed pointers.

  #84046 opened Sep 1, 2025

2 Issues closed by 1 person

• Dynamic memory exclusivity violations reported when using `-O` but not `-Onone`

  #83924 closed Sep 1, 2025

• Embedded Swift: String($0) not working for Int without explicit cast (asserts on hasValidSignatureForEmbedded)

  #83895 closed Sep 1, 2025

7 Issues opened by 5 people

• Immutable pack does not have the same shape as mutable one

  #84044 opened Sep 1, 2025

• Broken parameter documentation with raw identifiers

  #84038 opened Aug 31, 2025

• Mutating subscript on variadic generic type

  #84037 opened Aug 31, 2025

• Combining withoutActuallyEscaping & Task.immediate crashes Swift compiler

  #84035 opened Aug 31, 2025

• Too complex completion in SwiftUI result builder

  #84028 opened Aug 30, 2025

• integer generic parameter not considered when conforming to protocol with static property requirement

  #84027 opened Aug 30, 2025

• incorrect compiler warning when shadowing integer generic parameter via static property

  #84026 opened Aug 30, 2025

34 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• [cxx-interop] Prevent crash when importing a std::optional of nonescapable

  #83973 commented on Sep 1, 2025 • 2 new comments

• [SILGen] Remove and replace ad-hoc `assign_by_wrapper` instruction

  #83886 commented on Aug 29, 2025 • 1 new comment

• Introduce a "single breadcrumb mode" for Strings decoded from UTF16.

  #83987 commented on Aug 29, 2025 • 1 new comment

• [windows] add a parameter to pick which Windows SDK version to build

  #83455 commented on Sep 1, 2025 • 0 new comments

• [windows] move windows-llvm-lit-test-overrides.txt to the llvm-project repository

  #83588 commented on Sep 1, 2025 • 0 new comments

• Make standard types conform BitwiseCopyable

  #83608 commented on Aug 31, 2025 • 0 new comments

• [cxx-interop] Allow many specializations of a class template

  #83751 commented on Sep 1, 2025 • 0 new comments

• [Sema] Fix bad diagnostic for `nil + nil`

  #83848 commented on Aug 30, 2025 • 0 new comments

• Implement async defer

  #83891 commented on Sep 1, 2025 • 0 new comments

• [WinSDK] Modularize `<guiddef.h>`

  #83914 commented on Aug 30, 2025 • 0 new comments

• [Concurrency] Updates after second SE pitch.

  #83950 commented on Sep 1, 2025 • 0 new comments

• Protocol conformance cache for generic types

  #83989 commented on Aug 29, 2025 • 0 new comments

• Switch Windows foundation tests back to debug for PR testing

  #83993 commented on Aug 31, 2025 • 0 new comments

• [6.2][IRGen] Fix computation of spare bits for fixed arrays

  #84007 commented on Aug 29, 2025 • 0 new comments

• [6.2.1][IRGen] Fix computation of spare bits for fixed arrays

  #84008 commented on Aug 29, 2025 • 0 new comments

• Add a flag to annotate all functions with the `optremark` (`@_assemblyVision`) attribute

  #84009 commented on Sep 1, 2025 • 0 new comments

• [CSOptimizer] Don't match `nil` to `_OptionalNilComparisonType`

  #84012 commented on Sep 1, 2025 • 0 new comments

• WASI/Wasm: `withVaList(_:)` produces a va_list with the wrong type

  #72398 commented on Aug 30, 2025 • 0 new comments

• Failed to produce diagnostic for invalid metatype to existential metatype conversion

  #83991 commented on Aug 30, 2025 • 0 new comments

• [SR-2183] Swift icon is a swallow not a swift

  #44791 commented on Aug 31, 2025 • 0 new comments

• Mutating a mutable value pack is error

  #69231 commented on Aug 31, 2025 • 0 new comments

• macOS segfaults: allow disabling Runtime os_logger at runtime

  #83972 commented on Aug 31, 2025 • 0 new comments

• Glibc import fails to cross-compile with Swift SDK when .Cxx interop is enabled

  #83915 commented on Sep 1, 2025 • 0 new comments

• Nullptr crash in `swift::SynthesizeAccessorRequest::evaluate`

  #84041 commented on Sep 1, 2025 • 0 new comments

• [cxx-interop] Passing an `std::optional<std::string>` from C++ to Swift causes a compiler crash only in Release builds

  #83801 commented on Sep 1, 2025 • 0 new comments

• Debian packaging support

  #60690 commented on Sep 1, 2025 • 0 new comments

• DNM: toolchain build

  #65907 commented on Aug 29, 2025 • 0 new comments

• Have the frontend and new swift-driver look in an external `-sdk` for non-Darwin platform runtime libraries and modules too

  #79621 commented on Aug 31, 2025 • 0 new comments

• [DNM] Rebranch testing

  #81190 commented on Sep 1, 2025 • 0 new comments

• [IDE] Add full documentation to code completion result

  #82464 commented on Sep 1, 2025 • 0 new comments

• [Compile Time Constant Extraction] Support for open existential expressions

  #83008 commented on Aug 29, 2025 • 0 new comments

• [wasm] Update wasi-libc to version 27

  #83360 commented on Sep 1, 2025 • 0 new comments

• [IDE] [Signature Help] Add basic signature help request to SourceKit

  #83378 commented on Sep 1, 2025 • 0 new comments

• Revert "[Observation] ensure event triggers on deinitialization passes as if all properties that are being observed have changed (for weak storage) (#79823)"

  #83436 commented on Aug 31, 2025 • 0 new comments