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[cxx-interop] Base class with protected destructor causes runtime crash on Linux

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86426 In swiftlang/swift;

· j-hui opened on Jan 9, 2026

canImport(Foundation) should fail in embedded mode

embeddedEmbedded SwiftEmbedded Swift

featureA feature request or implementationA feature request or implementation

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86419 In swiftlang/swift;

· natecook1000 opened on Jan 9, 2026

[6.3 Regression] Compiler crash: SILGen assertion with nested @convention(c) closures in arrays

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

SILGenArea → compiler: The SIL generation stageArea → compiler: The SIL generation stage

Status: Open.

#86414 In swiftlang/swift;

· serhiiyaremychecw opened on Jan 9, 2026

Explicit use of <code>self</code> is required in nested non-escaping closure

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86409 In swiftlang/swift;

· yujingaya opened on Jan 9, 2026

Crash when evaluating request ExecuteSILPipelineRequest(Run pipelines ... on SIL for min)

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

SIL

SILOptimizerArea → compiler: SIL optimization passesArea → compiler: SIL optimization passes

Status: Open.

#86407 In swiftlang/swift;

· YuanchengJiang opened on Jan 9, 2026

Swift Code Coverage: Zero Branch Count in Instrumented Swift Code vs Correct Objective-C Reporting

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86406 In swiftlang/swift;

· thm1118 opened on Jan 9, 2026

Check / implement automatic differentiation for new kinds of accessors

AutoDiff

task

Status: Open.

#86405 In swiftlang/swift;

· asl opened on Jan 9, 2026

Parameter packs: non-escaping closure doesn't give error when called inside an escaping closure

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

parameter packsFeature → generics: Parameter packsFeature → generics: Parameter packs

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86399 In swiftlang/swift;

· ofgokce opened on Jan 8, 2026

ELF: Missing Swift runtime metadata

FreeBSDPlatform: FreeBSDPlatform: FreeBSD

Status: Open.

Bug

#86397 In swiftlang/swift;

· etcwilde opened on Jan 8, 2026

No error when non-Sendable type crosses to actor from a MainActor Task closure in same actor

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86396 In swiftlang/swift;

· jdanbrown opened on Jan 8, 2026

Package import warning incorrectly fires when using macro attributes on package declarations

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86375 In swiftlang/swift;

· hi2gage opened on Jan 8, 2026

Trying to compile code containing too-short backtick-escaped identifiers crashes

bugA deviation from expected or documented behavior. Also: expected but undesirable behavior.A deviation from expected or documented behavior. Also: expected but undesirable behavior.

crashBug: A crash, i.e., an abnormal termination of softwareBug: A crash, i.e., an abnormal termination of software

triage neededThis issue needs more specific labelsThis issue needs more specific labels

Status: Open.

#86354 In swiftlang/swift;

· ai0a opened on Jan 7, 2026