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Incorrect data race diagnostic when capturing weak reference to actor-isolated class via a non-isolated context

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.

#85402 In swiftlang/swift;

· Jnosh opened on Nov 9, 2025

Code quality regression with 6.1/6.2 compared to 6.0.3 for arm

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

IRGenLLVM IR generationLLVM IR generation

run-time performance

Status: Open.

#85389 In swiftlang/swift;

· thomasvl opened on Nov 7, 2025

<code>assertionFailure()</code> Not Removed at <code>-Onone -assert-config Release</code>

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

SIL

Status: Open.

#85382 In swiftlang/swift;

· zienag opened on Nov 7, 2025

If a ~Copyable initializer can exit before assigning all properties, the compiler can crash

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

move-onlyFeature → type declarations: Move-only type declarationsFeature → type declarations: Move-only type declarations

SIL

Status: Open.

#85377 In swiftlang/swift;

· scoates opened on Nov 7, 2025

Compiler crash during typechecking involving callAsFunction + trailing closure + explicit init

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.

#85376 In swiftlang/swift;

· jamieQ opened on Nov 7, 2025

FreeBSD: C++ Interop: Undefined <code>__voidify</code> symbol at link

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

c++ interopFeature: Interoperability with C++Feature: Interoperability with C++

FreeBSDPlatform: FreeBSDPlatform: FreeBSD

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

Status: Open.

#85368 In swiftlang/swift;

· etcwilde opened on Nov 6, 2025

Make sure the latest stable Android NDK can produce an Android SDK bundle

AndroidPlatform: AndroidPlatform: Android

c++ interopFeature: Interoperability with C++Feature: Interoperability with C++

task

Status: Open.

Task

#85365 In swiftlang/swift;

· finagolfin opened on Nov 6, 2025

[Typechecker]: Crash involving trailing closures, callAsFunction, and duplicate 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.

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.

#85364 In swiftlang/swift;

· jamieQ opened on Nov 6, 2025

Swift frontend crashes with infinite recursion with cxx-compatibility-mode-default

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

c++ interopFeature: Interoperability with C++Feature: Interoperability with C++

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

Status: Open.

#85361 In swiftlang/swift;

· datwelk opened on Nov 6, 2025

IR Generation Failure with Typed Throws and Protocol Inheritance

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

typed throwsFeature → error handling → throws & rethrows: Typed throwsFeature → error handling → throws & rethrows: Typed throws

Status: Open.

#85359 In swiftlang/swift;

· oryonatan opened on Nov 6, 2025

Bad diagnostic for type mismatch in <code>switch</code> expression when optional promotion is involved

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

compilerThe Swift compiler itselfThe Swift compiler itself

diagnostics QoIBug: Diagnostics Quality of ImplementationBug: Diagnostics Quality of Implementation

expressionsFeature: expressionsFeature: expressions

switchFeature → statements: 'switch' statementsFeature → statements: 'switch' statements

type checkerArea → compiler: Semantic analysisArea → compiler: Semantic analysis

Status: Open.

#85353 In swiftlang/swift;

· tridiak opened on Nov 6, 2025

FreeBSD: ld-elf.so.1: Shared object "libxml2.so.2" not found, required by "lldb"

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

FreeBSDPlatform: FreeBSDPlatform: FreeBSD

Status: Open.

#85348 In swiftlang/swift;

· etcwilde opened on Nov 5, 2025