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<code>@objc</code> async method has <code>_Nonnull</code> completion handler parameter instead of <code>_Nullable</code>

@objcFeature → attributes: The @objc attributeFeature → attributes: The @objc attribute

async & awaitFeature → concurrency: asynchronous function aka the async/await patternFeature → concurrency: asynchronous function aka the async/await pattern

attributesFeature: Declaration and type attributesFeature: Declaration and type attributes

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

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

objective-c interopFeature: Interoperability with Objective-CFeature: Interoperability with Objective-C

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

swift 5.7

unexpected behaviorBug: Unexpected behavior or incorrect outputBug: Unexpected behavior or incorrect output

Status: Open.

#64870 In swiftlang/swift;

· fumoboy007 opened on Apr 3, 2023

MainActor is not working

actorFeature → concurrency: `actor` declarationsFeature → concurrency: `actor` 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.

compilerThe Swift compiler itselfThe Swift compiler itself

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

missing infoResolution: Is missing crucial info such as a test case or a concise descriptionResolution: Is missing crucial info such as a test case or a concise description

swift 5.7

unexpected behaviorBug: Unexpected behavior or incorrect outputBug: Unexpected behavior or incorrect output

Status: Open.

#64767 In swiftlang/swift;

· miku1958 opened on Mar 30, 2023

[Question] Is it possible to declare Protocol with actor inheritance and @MainActor

actorFeature → concurrency: `actor` declarationsFeature → concurrency: `actor` 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.

compilerThe Swift compiler itselfThe Swift compiler itself

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

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

missing warningBug: Missing warningBug: Missing warning

protocolFeature → type declarations: Protocol declarationsFeature → type declarations: Protocol declarations

swift 5.7

Status: Open.

#64383 In swiftlang/swift;

· fummicc1 opened on Mar 15, 2023

The JSONEncoder encode Dictionary to Array?

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

Foundation

not a bugResolution → not a bug: Reported as a bug but turned out to be expected behavior or programmer errorResolution → not a bug: Reported as a bug but turned out to be expected behavior or programmer error

swift 5.7

transfer candidateThe issue may belong in another repositoryThe issue may belong in another repository

Status: Open.

#63778 In swiftlang/swift;

· Xezun opened on Feb 20, 2023

Compiler crash when declaring async function in an extension of a generic ObjC class that uses the generic parameter as a return type

async & awaitFeature → concurrency: asynchronous function aka the async/await patternFeature → concurrency: asynchronous function aka the async/await pattern

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

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

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

genericsFeature: generic declarations and typesFeature: generic declarations and types

objective-c interopFeature: Interoperability with Objective-CFeature: Interoperability with Objective-C

swift 5.7

Status: Open.

#63741 In swiftlang/swift;

· TadeasKriz opened on Feb 17, 2023

Codable requires a redundant constraint for nested generic types

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

CodableArea → standard library: `Codable` and co.Area → standard library: `Codable` and co.

compilerThe Swift compiler itselfThe Swift compiler itself

conformancesFeature → protocol: protocol conformancesFeature → protocol: protocol conformances

derived conformancesFeature → protocol → conformances: derived conformances aka synthesized conformancesFeature → protocol → conformances: derived conformances aka synthesized conformances

extensionFeature → declarations: `extension` declarationsFeature → declarations: `extension` declarations

genericsFeature: generic declarations and typesFeature: generic declarations and types

nested typesFeature: nested typesFeature: nested types

swift 5.7

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

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#63718 In swiftlang/swift;

· JessyCatterwaul opened on Feb 16, 2023

Error in LocalTestingDistributedActorSystem.assignID

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

distributedFeature → concurrency: distributed actorFeature → concurrency: distributed actor

run-time crashBug → crash: Swift code crashed during executionBug → crash: Swift code crashed during execution

standard libraryArea: Standard library umbrellaArea: Standard library umbrella

swift 5.7

Status: Open.

#63679 In swiftlang/swift;

· dimsumthinking opened on Feb 15, 2023

Unable To Append Two Emoji Strings On macOS Ventura's Swift

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

Foundation

run-time crashBug → crash: Swift code crashed during executionBug → crash: Swift code crashed during execution

standard libraryArea: Standard library umbrellaArea: Standard library umbrella

StringArea → standard library: The `String` typeArea → standard library: The `String` type

swift 5.7

Status: Open.

#63664 In swiftlang/swift;

· brianmichel opened on Feb 14, 2023

@objcMembers does not apply <code>@objc</code> to ObjC compatible enums or inner classes

attributesFeature: Declaration and type attributesFeature: Declaration and type attributes

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

objective-c interopFeature: Interoperability with Objective-CFeature: Interoperability with Objective-C

PrintAsClangArea → compiler: The PrintAsClang libraryArea → compiler: The PrintAsClang library

swift 5.7

unexpected behaviorBug: Unexpected behavior or incorrect outputBug: Unexpected behavior or incorrect output

Status: Open.

#63442 In swiftlang/swift;

· mildm8nnered opened on Feb 5, 2023

Aliases from protocols do not function as property wrappers

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

property wrappersFeature: property wrappersFeature: property wrappers

protocolFeature → type declarations: Protocol declarationsFeature → type declarations: Protocol declarations

swift 5.7

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

Status: Open.

#63400 In swiftlang/swift;

· JessyCatterwaul opened on Feb 2, 2023

<code>await</code>ing <code>async let</code> function from lazy initialized object doesn't execute concurrently in an <code>XCTest</code> test case

async & awaitFeature → concurrency: asynchronous function aka the async/await patternFeature → concurrency: asynchronous function aka the async/await pattern

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

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

swift 5.7

XCTestFlag: Involves XCTestFlag: Involves XCTest

Status: Open.

#63353 In swiftlang/swift;

· sja26 opened on Feb 1, 2023

Subclassing open class with private async/await methods fails

access controlFeature → modifiers: Access control and access levelsFeature → modifiers: Access control and access levels

async & awaitFeature → concurrency: asynchronous function aka the async/await patternFeature → concurrency: asynchronous function aka the async/await pattern

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

classFeature → type declarations: Class declarationsFeature → type declarations: Class declarations

compilerThe Swift compiler itselfThe Swift compiler itself

concurrencyFeature: umbrella label for concurrency language featuresFeature: umbrella label for concurrency language features

inheritanceFeature → type declarations → class: Subclassing and inheritance of class membersFeature → type declarations → class: Subclassing and inheritance of class members

linker error

multiple modulesFlag: An issue whose reproduction requires multiple modulesFlag: An issue whose reproduction requires multiple modules

optimized onlyFlag: An issue whose reproduction requires optimized compilationFlag: An issue whose reproduction requires optimized compilation

swift 5.7

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#63303 In swiftlang/swift;

· beniaminidziak opened on Jan 30, 2023