Issues

• String(std.string) fails to resolve depending on which other files share the frontend job (Swift 6.3.3, C++ interop)

  swiftlang/swift#93160 · Filter by author RisingV opened on Oct 11, 2026

• [Macros] #sourceLocation inside attached macro expansion does not update #line evaluation

  triage needed
  Bug

  swiftlang/swift#93159 · Filter by author agam1092005 opened on Oct 11, 2026

• sourcekitd crashes when concurrent requests expand macros through the in-process plugin server (data race in ParsedSyntaxRegistry's LRUCache)

  swiftlang/swift#93157 · Filter by author 9c5s opened on Oct 11, 2026

• [RequirementMachine] Conditional conformance that implies Sendable crashes in RequirementMachine::verify ("Term verification failed") when its same-type requirement makes the type's own requirements redundant

  compilercrashgeneric constraintsgenericsSendable
  Bug

  swiftlang/swift#93152 · Filter by author YuanchengJiang opened on Oct 10, 2026

• @NSManaged added by a member-attribute macro is ignored for @objc inference when an AnyObject lookup of the same name is type-checked first (-wmo)

  swiftlang/swift#93150 · Filter by author depth42 opened on Oct 10, 2026

• @MainActor and @Sendable are not applied to parenthesized function types

  triage needed
  Bug

  swiftlang/swift#93149 · Filter by author yimajo opened on Oct 10, 2026

• Swift 6.4: REPL: Fails to import Swift runtime module

  triage needed
  Bug

  swiftlang/swift#93146 · Filter by author etcwilde opened on Oct 10, 2026

• Write through a MutableSpan over a local variable is dropped at -O

  SILOptimizer
  Bug

  swiftlang/swift#93141 · Filter by author glessard opened on Oct 9, 2026
  1

• Misaligned load in synthesized enum hashValue on x86_64 Linux with UInt128 and UInt8 payload

  crashtriage needed
  Bug

  swiftlang/swift#93129 · Filter by author camunro opened on Oct 9, 2026
  4

• [Windows] [Backtracer] UI programs flash spurious looking console window on crash

  triage needed
  Bug

  swiftlang/swift#93126 · Filter by author carlpeto opened on Oct 9, 2026

• [Windows] [Runtime] SWIFT_ vars not read on wide launch path

  triage needed
  Bug

  swiftlang/swift#93123 · Filter by author carlpeto opened on Oct 9, 2026
  1

  

• Swift 6.4 -O miscompile: task-group child returning a tuple from both do and catch returns 0 for a captured value

  triage needed
  Bug

  swiftlang/swift#93118 · Filter by author trevorrjohn opened on Oct 9, 2026

• ER: fast UTF-8/ASCII string initializers for BinaryInteger

  featurenumericsStringUnicode
  Feature

  swiftlang/swift#93113 · Filter by author grynspan opened on Oct 9, 2026

• String.UTF8View (and related types) should conform to Hashable.

  featureStringUnicode
  Feature

  swiftlang/swift#93112 · Filter by author grynspan opened on Oct 9, 2026

• Structured concurrency cannot capture a ~Escapable value but the same withoutActuallyEscaping code compiles when it's moved into a helper

  triage needed
  Bug

  swiftlang/swift#93107 · Filter by author FranzBusch opened on Oct 9, 2026

• Generic specializer crashes in TypeSubstCloner::ApplySiteCloningHelper on a typed-throws closure taken out of an inout Optional

  crashtriage needed
  Bug

  swiftlang/swift#93106 · Filter by author FranzBusch opened on Oct 9, 2026

• Swift compilation-cache keys depend on the canonical Xcode bundle path

  swiftlang/swift#93096 · Filter by author CrazyFanFan opened on Oct 9, 2026
  1

• Spurious "may be isolated" warning for associated conformances of a Sendable protocol

  concurrencydistributed
  Bug

  swiftlang/swift#93084 · Filter by author tshortli opened on Oct 8, 2026
  1

  

• SILGen over-consumes a noncopyable, address-only value captured by a non-escaping closure with -enable-sil-opaque-values

  assertion failureSILGen
  Bug

  swiftlang/swift#93065 · Filter by author FranzBusch opened on Oct 8, 2026

• Allow ~Copyable values in distributed funcs

  distributed
  Task

  swiftlang/swift#93054 · Filter by author ktoso opened on Oct 8, 2026
  

• Emitting runtime metadata for imported protocol with method that returns a C struct with arc pointers hits assert with C++ interop

  ARCc++ interopcrash
  Bug

  swiftlang/swift#93040 · Filter by author NuriAmari opened on Oct 7, 2026
  1

• nonisolated(nonsending) withUnsafeCurrentTask(body:) exposes @abi function signature in public documentation

  triage needed
  Bug

  swiftlang/swift#93032 · Filter by author NotTheNHK opened on Oct 7, 2026
  3

• Assertion failed: (assocType != nullptr && "Need to look harder"), function getAssociatedType at InterfaceType.cpp

  crashtriage needed
  Bug

  swiftlang/swift#93027 · Filter by author YuanchengJiang opened on Oct 7, 2026

• lc.swift:2:1: error: 'nil' cannot be used in context expecting type 'A<T>'

  crashtriage needed
  Bug

  swiftlang/swift#93026 · Filter by author YuanchengJiang opened on Oct 7, 2026

• SIL verification failed: conflicting debug variable type

  crashtriage needed
  Bug

  swiftlang/swift#93025 · Filter by author YuanchengJiang opened on Oct 7, 2026