Issues

• [RBI] Assertion "Can only accept non-Sendable values" in valueHasID when a method casts an Any.Type stored property and another stored property of self

  crashtriage needed
  Bug

  swiftlang/swift#94313 · Filter by author clackary opened on Nov 13, 2026

• -O folds T.self is any Error.Type to false when T == any Error, contradicting Error's self-conformance (Sema and -Onone runtime say true).

  triage needed
  Bug

  swiftlang/swift#94296 · Filter by author AzeemJiva opened on Nov 13, 2026

• LoadableByAddress miscompiles @out return extracted from a single-element labeled enum case under -O / -Osize (dealloc_stack before copy_addr)

  swiftlang/swift#94292 · Filter by author csueiras opened on Nov 13, 2026

• Crash: Failed to reconstruct type for $s5repro1fyys15ContinuousClockVF1SL_VmD

  crashtriage needed
  Bug

  swiftlang/swift#94282 · Filter by author czechboy0 opened on Nov 13, 2026

• Whole-module compile writes a multi-GB make-style .d file: full dependency list repeated once per output

  triage needed
  Bug

  swiftlang/swift#94281 · Filter by author salvatoreboemia opened on Nov 13, 2026

• swift-frontend crash on imported C struct with va_list member on Linux

  crashtriage needed
  Bug

  swiftlang/swift#94273 · Filter by author jmschonfeld opened on Nov 12, 2026
  1

• SE-0470 Rule 3 is not enforced for values returned from generic calls, including AnyHashable

  triage needed
  Bug

  swiftlang/swift#94268 · Filter by author salari-dev opened on Nov 12, 2026

• Unsoundness hole in nonisolated deinit

  triage needed
  Bug

  swiftlang/swift#94264 · Filter by author stephencelis opened on Nov 12, 2026

• EmbeddedPlatform.h has no module map and is not on the default include path

  embedded
  swiftlang/swift#94260 · Filter by author rauhul opened on Nov 12, 2026
  

• [weak] capture reads nil while the object is alive: AllocBoxToStack deallocates the promoted weak slot before the closure is called

  swiftlang/swift#94251 · Filter by author bamboudev opened on Nov 12, 2026

• [Swiftify] A count that uses a C enum value causes a compile error when the wrapper is called

  c++ interopc interopmemory safety
  swiftlang/swift#94246 · Filter by author delcypher opened on Nov 12, 2026

• [Swiftify] An explicit integer cast in a C++ count traps when the value doesn't fit instead of truncating

  c++ interopc interopmemory safety
  swiftlang/swift#94245 · Filter by author delcypher opened on Nov 12, 2026

• [Swiftify] A count that is just the name of a C++ T & or T && parameter causes a compile error when the wrapper is called

  c++ interopc interopmemory safety
  swiftlang/swift#94244 · Filter by author delcypher opened on Nov 12, 2026

• [Swiftify] A count that applies unary negation to a size_t parameter causes a compile error when the wrapper is called

  c++ interopc interopmemory safety
  swiftlang/swift#94243 · Filter by author delcypher opened on Nov 12, 2026

• [Swiftify] A count that casts or converts a C++ rvalue reference parameter causes a compile error when the wrapper is called

  c++ interopc interopmemory safety
  swiftlang/swift#94238 · Filter by author delcypher opened on Nov 12, 2026

• [6.4.x] -O miscompile: IndVarSimplify freezes a loop exit test at its first-iteration value, fixed upstream by llvm/llvm-project#181171

  swiftlang/swift#94229 · Filter by author ProJedi1234 opened on Nov 11, 2026

• [Swiftify] A safe wrapper that doesn't type-check crashes the compiler during SIL verification

  c++ interopc interopmemory safety
  swiftlang/swift#94223 · Filter by author delcypher opened on Nov 11, 2026

• [Swiftify] Support swift_newtype values in count expressions

  c++ interopc interopmemory safety
  swiftlang/swift#94222 · Filter by author delcypher opened on Nov 11, 2026

• [Swiftify] A negative bare count on a returned pointer isn't caught

  c++ interopc interopmemory safety
  swiftlang/swift#94221 · Filter by author delcypher opened on Nov 11, 2026

• [Swiftify] A safe wrapper referring to a global that needs a scoped or renamed Swift name generates Swift code that does not compile

  c++ interopc interopmemory safety
  swiftlang/swift#94220 · Filter by author delcypher opened on Nov 11, 2026

• [Swiftify] A count that is just the name of a const global causes a compile error when the function is used

  c++ interopc interopmemory safety
  swiftlang/swift#94219 · Filter by author delcypher opened on Nov 11, 2026

• [Swiftify] A returned pointer's count is only checked after the C function is called

  c++ interopc interopmemory safety
  swiftlang/swift#94218 · Filter by author delcypher opened on Nov 11, 2026

• SILGen assertion for a borrowing method called through an optional chain

  assertion failureoptional chainingownershipSILGen
  Bug

  swiftlang/swift#94216 · Filter by author glessard opened on Nov 11, 2026

• Compiler crash at -O: "SIL verification failed: read-only scope invalidated by a local write" (TempLValueElimination)

  swiftlang/swift#94212 · Filter by author jonskup opened on Nov 11, 2026

• Isolated properties of non-sendable types cannot be initialised in nonisolated init even when initialising value is in disconnected region

  actor isolationinitregion-based isolation checkersending
  Bug

  swiftlang/swift#94208 · Filter by author nickolas-pohilets opened on Nov 11, 2026