94 Pull requests merged by 37 people

• [CS] NFC: Remove CTP_ForEachStmt

  #84142 merged Sep 6, 2025

• [NFC] Introduce a convenience specialization of CanTypeVisitor

  #84130 merged Sep 6, 2025

• AST: Add printing support for #available and #_hasSymbol conditions

  #84134 merged Sep 6, 2025

• Require build of StringProcessing for some Macros tests

  #84126 merged Sep 6, 2025

• ASTGen: Fix disable implicit string processing import

  #84129 merged Sep 6, 2025

• SwiftRemoteMirror: export symbols from the library on Windows

  #84124 merged Sep 6, 2025

• [6.2] [test] Update availability_returns_twice.swift for Darwin module refactoring.

  #83981 merged Sep 5, 2025

• [6.2] [test] Import locale modules explicitly in PrintFloat.swift.gyb.

  #83978 merged Sep 5, 2025

• 🍒[cxx-interop] Pass foreign reference types with correct level of indirection

  #84090 merged Sep 5, 2025

• [IRGen] Lazily emit SIL global variables

  #84110 merged Sep 5, 2025

• CMake: Runtime: Extract runtime version number

  #84063 merged Sep 5, 2025

• [cxx-interop] Check if copy constructor is eligible

  #84121 merged Sep 5, 2025

• [update-checkout] add a check for locked repositories

  #84079 merged Sep 5, 2025

• Remove TypeBase::replaceCovariantResultType()

  #84115 merged Sep 5, 2025

• [Distributed] We're currently not using this isDistributedThunk func

  #84118 merged Sep 5, 2025

• [6.2][Concurrency/Distributed] ensure distributed thunks are @concurrent

  #83997 merged Sep 5, 2025

• [cxx-interop] Basic support for anonymous structs with non-copyable fields

  #84105 merged Sep 5, 2025

• [6.2.1][Concurrency/Distributed] ensure distributed thunks are @concurrent

  #84067 merged Sep 5, 2025

• AST: Use availability to control decl visibility in public swiftinterfaces

  #84107 merged Sep 5, 2025

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

  #84104 merged Sep 4, 2025

• ASTGen: prevent _StringProcessing from being loaded

  #84108 merged Sep 4, 2025

• Optimizer: replace explicit_copy_value and explicit_copy_addr with their non-explicit counterparts

  #84101 merged Sep 4, 2025

• @_lifetime defaults

  #84010 merged Sep 4, 2025

• [test] Temporarily disable 2 C++ interop tests

  #84113 merged Sep 4, 2025

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

  #84008 merged Sep 4, 2025

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

  #84007 merged Sep 4, 2025

• [6.2][cxx-interop] Properly support OS objects in reverse interop

  #84076 merged Sep 4, 2025

• [test][Windows] Fix Reflection/wasm.test failure on rebranch

  #84099 merged Sep 4, 2025

• Don't grow smol Strings to 16 characters when bridging out if tagged pointer formation fails

  #84068 merged Sep 4, 2025

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

  #83008 merged Sep 4, 2025

• [6.2 🍒][Dependency Scanning] Give each scanner worker a unique Diagnostic Engine

  #84089 merged Sep 4, 2025

• build.ps1: clean up SDKROOT references

  #84096 merged Sep 4, 2025

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

  #84009 merged Sep 4, 2025

• [6.2.1] Optimizer: fix handling of dependent existential archetypes in alloc_stack and apply simplification

  #83965 merged Sep 4, 2025

• SILGen: Global constants are addressable.

  #84084 merged Sep 4, 2025

• Try to clarify availability of Float16 and Float80

  #84011 merged Sep 4, 2025

• Manually merge remote-tracking branch 'origin/main' into rebranch

  #84102 merged Sep 4, 2025

• [Embedded] Introduce DeferredCodeGen feature.

  #84095 merged Sep 4, 2025

• Mark U[M]BP.baseAddress transparent

  #84097 merged Sep 4, 2025

• Optimizer: rewrite and improve the ConstantCapturePropagation pass

  #84071 merged Sep 4, 2025

• [6.2][cxx-interop] Fix import virtual methods with rvalue ref params

  #84080 merged Sep 4, 2025

• [6.2][cxx-interop] Handle vector types in escapability analysis

  #84078 merged Sep 4, 2025

• [6.2][cxx-interop] Fix passing optional CoreFoundation types from Swift to C++

  #84077 merged Sep 4, 2025

• [6.2][cxx-interop] Do not define inherited copy/move operations

  #84075 merged Sep 4, 2025

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

  #84073 merged Sep 4, 2025

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

  #84053 merged Sep 4, 2025

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

  #83378 merged Sep 4, 2025

• [IDE] Add full documentation to code completion result

  #82464 merged Sep 4, 2025

• [6.2.1] SILCombine: fix convert_function -> apply peephole for generic function types

  #83966 merged Sep 4, 2025

• [test] Prototypes/HypoArray: Don’t force test into Swift 6 mode

  #84062 merged Sep 4, 2025

• [test][Windows] Fix some test failures on rebranch

  #84098 merged Sep 4, 2025

• [Dependency Scanning] Give each scanner worker a unique Diagnostic Engine

  #84064 merged Sep 4, 2025

• Bump the Swift version to 6.3

  #83748 merged Sep 4, 2025

• Remove "if and only if" language from [Raw]Span's _pointer field

  #84002 merged Sep 3, 2025

• [Concurrency/Distributed] ensure distributed thunks are @concurrent

  #84072 merged Sep 3, 2025

• FreeBSD: Disable driver/filelists.swift test

  #84087 merged Sep 3, 2025

• [cxx-interop] Test initializing foreign reference type when passed by parameter

  #84085 merged Sep 3, 2025

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

  #83886 merged Sep 3, 2025

• AST: Fix runtime unavailability for universally unavailable decls

  #84070 merged Sep 3, 2025

• [Diags] Allow multiple in-flight diagnostics

  #83776 merged Sep 3, 2025

• Sema: Introduce an ExportabilityReason for availability attributes

  #84069 merged Sep 3, 2025

• [TypeChecker] Avoid checking lazy property accessors if they haven't …

  #84066 merged Sep 3, 2025

• [demangling] make printGenericSignature virtual

  #84065 merged Sep 2, 2025

• [git-clang-format-all] Apply fixup commits one at a time.

  #84059 merged Sep 2, 2025

• Fix read only apply hoisting with conflicting write apply in the new LICM

  #84055 merged Sep 2, 2025

• [test] adjust backdeployment testing for bridged arrays

  #83980 merged Sep 2, 2025

• Don't run this test in backdeployed / host stdlib configs

  #83958 merged Sep 2, 2025

• [wasm] Update wasi-libc to version 27

  #83360 merged Sep 2, 2025

• stdlib: Mark UnsafeRawBufferPointer's withContiguousStorageIfAvailable as @inline(__always)

  #83833 merged Sep 2, 2025

• [6.2] Update the runtime version to 6.2

  #83935 merged Sep 2, 2025

• [6.2.0] Update the runtime version to 6.2.0

  #83937 merged Sep 2, 2025

• [6.2.1] Update the runtime version to 6.2

  #83938 merged Sep 2, 2025

• [6.2] Optimizer: fix an ownership violation when duplicating loops

  #84006 merged Sep 2, 2025

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

  #84036 merged Sep 2, 2025

• [CSOptimizer] Don't match nil to _OptionalNilComparisonType

  #84012 merged Sep 2, 2025

• [wasm] Add support for __builtin_va_list type mapping

  #84029 merged Sep 2, 2025

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

  #83973 merged Sep 2, 2025

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

  #84046 merged Sep 2, 2025

• [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

33 Pull requests opened by 26 people

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

  #84043 opened Sep 1, 2025

• Ownership support for LICM

  #84045 opened Sep 1, 2025

• Distributed computed properties bug when called through resolvable

  #84047 opened Sep 2, 2025

• Fix some rebranch test failures on main

  #84052 opened Sep 2, 2025

• 6.2: [wasm] Add support for __builtin_va_list type mapping

  #84054 opened Sep 2, 2025

• Add System to the toolchain

  #84057 opened Sep 2, 2025

• [6.2.0][build] Make it possible to build a cross-compilation toolchain for Android, including Testing

  #84061 opened Sep 2, 2025

• [update-checkout] set the maximum amount of processes on Windows to 60

  #84081 opened Sep 3, 2025

• Add default implementation for *= in Numeric.

  #84086 opened Sep 3, 2025

• LifetimeDependenceDiagnostics: check for on-stack trivial copies

  #84091 opened Sep 3, 2025

• [6.2] LifetimeDependenceDiagnostics: check for on-stack trivial copies

  #84092 opened Sep 3, 2025

• [rbi] Initial implementation of isolation history

  #84093 opened Sep 3, 2025

• Unconditionally enable debug info in ClangImporter when DebuggerSuppo…

  #84094 opened Sep 3, 2025

• [cxx-interop] Avoid trying to instantiate copy constructor of `std::optional<NonCopyable>`

  #84103 opened Sep 4, 2025

• [update-checkout] add a --quiet flag to reduce the verbosity

  #84109 opened Sep 4, 2025

• [6.2.1 🍒][Dependency Scanning] Give each scanner worker a unique Diagnostic Engine

  #84111 opened Sep 4, 2025

• Debug prefix macro search paths

  #84112 opened Sep 4, 2025

• [Concurrency] Emit async task running/waitingOn metadata inline into CPUTrace.

  #84114 opened Sep 4, 2025

• [APIGen] Account for access scopes of declarations

  #84116 opened Sep 4, 2025

• [Concurrency] Fix `@Sendable` closures not inferring `nonisolated(non…

  #84117 opened Sep 5, 2025

• [Distributed] Allow disabling SerializationRequirement by using Any

  #84119 opened Sep 5, 2025

• [6.2][cxx-interop] Basic support for anonymous structs with non-copyable fields

  #84120 opened Sep 5, 2025

• [Linux][Backtracing] Don't try to use `process_vm_readv()`.

  #84122 opened Sep 5, 2025

• [6.2] Build CMake on macOS if one is not preinstalled

  #84123 opened Sep 5, 2025

• 🍒 [windows] update to the 6.1.2 toolchain in build.ps1

  #84125 opened Sep 5, 2025

• [presets] Add a special preset for Amazon Linux 2

  #84127 opened Sep 5, 2025

• [Parse] Change whitespace rule between attribute name and '(' in Swift 6

  #84128 opened Sep 5, 2025

• Sema: Small cleanups to TypeOfReference.cpp

  #84131 opened Sep 5, 2025

• Add error messages for Swift module map parser

  #84132 opened Sep 5, 2025

• [Test] Add signaturehelp to supported requests list in sourcekitd-test

  #84133 opened Sep 5, 2025

• [ASTPrinter] Escape @_lifetime arguments when needed

  #84136 opened Sep 6, 2025

• SILGen: Use lowered function type parameters in objc-to-swift thunks for initializers.

  #84143 opened Sep 6, 2025

• Sema: Don't stick CovariantReturnConversionExpr around property access with DynamicSelfType base

  #84144 opened Sep 6, 2025

8 Issues closed by 6 people

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

  #83915 closed Sep 6, 2025

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

  #84041 closed Sep 3, 2025

• Slow speed of SFT of InternVL3_5-30B-A3B

  #84049 closed Sep 2, 2025

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

  #72398 closed Sep 2, 2025

• macOS segfaults: allow disabling Runtime os_logger at runtime

  #83972 closed Sep 2, 2025

• Swift Overload Resolution: Why is a Generic Method Chosen Over a More Specific Non-Generic One Inside a Generic Context?

  #84048 closed Sep 2, 2025

• 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

19 Issues opened by 15 people

• SIL compile crash when switching over an enum with cases that have an InlineArray parameter

  #84141 opened Sep 6, 2025

• Assertion failure in serialization when building swift-syntax with swift-DEVELOPMENT-SNAPSHOT-2025-09-04-a_wasm

  #84140 opened Sep 6, 2025

• Compiler crashes compiling expanded macro from a private import

  #84139 opened Sep 6, 2025

• Strange behavior with 'any RegexComponent'

  #84138 opened Sep 6, 2025

• firstMatch of any RegexComponent: SwiftCompile failed

  #84137 opened Sep 6, 2025

• `withoutActuallyEscaping` and `withCheckedContinuation` do not work well together

  #84135 opened Sep 6, 2025

• Compiler crashes with a particular combination of protocol conformance and a "dynamic" property modifier

  #84106 opened Sep 4, 2025

• Swift 6.1.2 SendNonSendable crash

  #84100 opened Sep 4, 2025

• [Caching] Swift caching with prefix mapping doesn't work when having a bridging header

  #84088 opened Sep 3, 2025

• Frontend fails with "Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!" in C++ interop

  #84082 opened Sep 3, 2025

• Warning about unavailable functions with simplest C++ interop project

  #84074 opened Sep 3, 2025

• `Task.sleep` is not available in Embedded Swift for Wasm

  #84058 opened Sep 2, 2025

• ☔ COM interop on Windows

  #84056 opened Sep 2, 2025

• Closure with typed throw crashes

  #84051 opened Sep 2, 2025

• Windows nightly installer does not install swiftc.exe

  #84050 opened Sep 2, 2025

• 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

55 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.

• stdlib: enable `String.withCString` in Embedded Swift

  #83976 commented on Sep 3, 2025 • 16 new comments

• [concurrency] Change #isolated to mask out the TBI bits of the witness pointer of the implicit isolated any Actor pointer so we can do optimizations on TBI supporting platforms in the future.

  #83346 commented on Sep 2, 2025 • 9 new comments

• [documentation] update the WindowsBuild guide

  #83871 commented on Sep 4, 2025 • 7 new comments

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

  #84032 commented on Sep 2, 2025 • 2 new comments

• [FixIt] Add fix-it for duplicate global actor annotations.

  #82716 commented on Sep 5, 2025 • 2 new comments

• [Dependency Scanning] Adding Diagnostics C-API for Out-of-date File System Cache Entries Incurred During Clang Modules Scan

  #81944 commented on Sep 2, 2025 • 2 new comments

• Vectorize UTF16->UTF8 transcoding

  #83407 commented on Sep 3, 2025 • 2 new comments

• Fill in two missing functions for Embedded Swift

  #84024 commented on Sep 5, 2025 • 1 new comment

• Reimplement floating-point description implementation in Swift.

  #82750 commented on Sep 2, 2025 • 1 new comment

• [cxx-interop] Import functions that return `auto`

  #83949 commented on Sep 2, 2025 • 1 new comment

• [SILGen] Fix the type of closure thunks that are passed const references

  #83827 commented on Sep 5, 2025 • 1 new comment

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

  #83588 commented on Sep 4, 2025 • 0 new comments

• Avoid StringUTF16View dispatch overhead for some bridged String methods

  #83529 commented on Sep 5, 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

• [stdlib] Switch to a linear-space variant of Myers diffing

  #83212 commented on Sep 6, 2025 • 0 new comments

• [stdlib] Handle arguments with alignment larger than a word in KeyPath

  #83161 commented on Sep 4, 2025 • 0 new comments

• [StdLib][RFC][DNM] Add `isIdentical` Methods for Quick Comparisons to Dictionary and Set

  #82439 commented on Sep 3, 2025 • 0 new comments

• Make standard types conform BitwiseCopyable

  #83608 commented on Sep 3, 2025 • 0 new comments

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

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

• [Sema] Clean up extension binding a little

  #83777 commented on Sep 4, 2025 • 0 new comments

• [6.2.1][build] Make it possible to build a cross-compilation toolchain for Android, including Testing

  #83809 commented on Sep 4, 2025 • 0 new comments

• [Dependency Scanning] Re-enable querying Swift Overlays only for visible Clang modules

  #83841 commented on Sep 3, 2025 • 0 new comments

• Implement async defer

  #83891 commented on Sep 2, 2025 • 0 new comments

• [WinSDK] Modularize `<guiddef.h>`

  #83914 commented on Sep 3, 2025 • 0 new comments

• [Concurrency] Updates after second SE pitch.

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

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

  #83987 commented on Sep 5, 2025 • 0 new comments

• Protocol conformance cache for generic types

  #83989 commented on Sep 2, 2025 • 0 new comments

• Introduce new cross_compilation_stdlib.py product to cross compile Swift given an arch, sysroot, and flags

  #84004 commented on Sep 3, 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

• Too complex completion in SwiftUI result builder

  #84028 commented on Sep 1, 2025 • 0 new comments

• [SR-13096] Fix autodiff typing rules for class-typed function parameters

  #55542 commented on Sep 2, 2025 • 0 new comments

• Debian packaging support

  #60690 commented on Sep 2, 2025 • 0 new comments

• Swift/StringUTF16View.swift:368: Fatal error: String index is out of bounds.

  #82359 commented on Sep 2, 2025 • 0 new comments

• Interop: Cannot return `swift::Optional<swift::String>` from C++ function

  #76024 commented on Sep 3, 2025 • 0 new comments

• Inherited protocol with `Equatable` doesn't infer MainActor

  #83610 commented on Sep 3, 2025 • 0 new comments

• Missing concurrency diagnostics when a local var is captured by concurent Tasks.

  #82827 commented on Sep 4, 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 4, 2025 • 0 new comments

• Failure to build `DocC` documentation with a project importing `swift-atomics`.

  #82086 commented on Sep 4, 2025 • 0 new comments

• Swift 6 typed-throws unable to detect exhaustive catch statements

  #74555 commented on Sep 5, 2025 • 0 new comments

• AsyncThrowingStream initializer Failure type is restricted to Swift.Error

  #75853 commented on Sep 5, 2025 • 0 new comments

• [SR-539] Cascading documentation comments

  #43156 commented on Sep 6, 2025 • 0 new comments

• DNM: toolchain build

  #65907 commented on Sep 7, 2025 • 0 new comments

• Fixing ARM64 return registers in CallConvSummary.rst

  #71008 commented on Sep 3, 2025 • 0 new comments

• [DNM] 🍁 Dummy commit for toolchain build

  #76034 commented on Sep 6, 2025 • 0 new comments

• Support differentiation of wrapped value modify accessors

  #78794 commented on Sep 5, 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 Sep 5, 2025 • 0 new comments

• DNM - toolchain testing

  #79684 commented on Sep 4, 2025 • 0 new comments

• [Sema] Produce expected diagnostic for invalid operator usage in loop

  #80042 commented on Sep 2, 2025 • 0 new comments

• Better `debugDescription` for `EncodingError` and `DecodingError`

  #80941 commented on Sep 7, 2025 • 0 new comments

• Fix two issues related with emission of differentiability witnesses

  #80983 commented on Sep 4, 2025 • 0 new comments

• [DNM] Rebranch testing

  #81190 commented on Sep 3, 2025 • 0 new comments

• [MacrosOnImports][Swiftify] Copy module imports from clang node's module to its Swift macro SourceFile

  #81859 commented on Sep 3, 2025 • 0 new comments

• [StdLib][RFC][DNM] Add `isIdentical` Methods for Quick Comparisons to String and Substring

  #82055 commented on Sep 3, 2025 • 0 new comments

• [StdLib][RFC][DNM] Add `isIdentical` Methods for Quick Comparisons to Array, ArraySlice, and ContiguousArray

  #82438 commented on Sep 3, 2025 • 0 new comments