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Compiler unnecessarily requires <code>mutating</code> in protocol extensions where <code>Self: AnyObject</code>

AnyObjectFeature → types: The `AnyObject` built-in typeFeature → types: The `AnyObject` built-in type

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

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

generic constraintsFeature → generics: generic constraintsFeature → generics: generic constraints

mutatingFeature → declarations → functions: Mutating functionsFeature → declarations → functions: Mutating functions

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

swift 6.0

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

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#77822 In swiftlang/swift;

· fwcd opened on Nov 24, 2024

Assertion failed: (!hasAccess() &amp;&amp; "access already set")

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

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

declarationsFeature: declarationsFeature: declarations

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

generic constraintsFeature → generics: generic constraintsFeature → generics: generic constraints

genericsFeature: generic declarations and typesFeature: generic declarations and types

name lookupArea → compiler → type checker: Name lookupArea → compiler → type checker: Name lookup

swift 6.0

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

type declarationsFeature → declarations: Type declarationsFeature → declarations: Type declarations

typealiasFeature → type declarations: `typealias` declarationsFeature → type declarations: `typealias` declarations

Status: Open.

#75713 In swiftlang/swift;

· JaapWijnen opened on Aug 6, 2024

6.0 conformance regression with abstract type witness

associatedtypeFeature → declarations → protocol: `associatedtype` declarationsFeature → declarations → protocol: `associatedtype` 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

conformancesFeature → protocol: protocol conformancesFeature → protocol: protocol conformances

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

regression

swift 6.0

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

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#75504 In swiftlang/swift;

· AnthonyLatsis opened on Jul 26, 2024

Compiler error when extending a typealias of a partially specialized generic type

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

declarationsFeature: declarationsFeature: declarations

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

genericsFeature: generic declarations and typesFeature: generic declarations and types

good first issueGood for newcomersGood for newcomers

swift 5.9

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

typealiasFeature → type declarations: `typealias` declarationsFeature → type declarations: `typealias` declarations

TypeResolver

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#68212 In swiftlang/swift;

· tapsns opened on Aug 30, 2023

Index data (SourceKit and Indexstore) for an <code>extension</code> of a <code>typealias</code> does not reference the <code>typealias</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.

declarationsFeature: declarationsFeature: declarations

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

indexingArea → source tooling: AST indexingArea → source tooling: AST indexing

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

source toolingArea: IDE support, SourceKit, and other source toolingArea: IDE support, SourceKit, and other source tooling

swift 5.8

typealiasFeature → type declarations: `typealias` declarationsFeature → type declarations: `typealias` declarations

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

Status: Open.

#67444 In swiftlang/swift;

· dylansturg opened on Jul 20, 2023

Main function provided by extension function for protocol is not MainActor

@mainFeature → attributes: the @main attributeFeature → attributes: the @main attribute

actorFeature → concurrency: `actor` declarationsFeature → concurrency: `actor` declarations

actor isolationFeature → concurrency: Actor isolationFeature → concurrency: Actor isolation

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

conformancesFeature → protocol: protocol conformancesFeature → protocol: protocol conformances

declarationsFeature: declarationsFeature: declarations

default implementationsFeature → protocol → conformances: default implementationsFeature → protocol → conformances: default implementations

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

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

swift 5.9

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

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

Status: Open.

#65794 In swiftlang/swift;

· kiootic opened on May 9, 2023

Index data on extension varies if extension has no members

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

declarationsFeature: declarationsFeature: declarations

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

indexingArea → source tooling: AST indexingArea → source tooling: AST indexing

source toolingArea: IDE support, SourceKit, and other source toolingArea: IDE support, SourceKit, and other source tooling

swift 5.9

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

Status: Open.

#65722 In swiftlang/swift;

· keith opened on May 5, 2023

Result builder annotations are ignored in extensions

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

conformancesFeature → protocol: protocol conformancesFeature → protocol: protocol conformances

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

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

result buildersFeature: Result buildersFeature: Result builders

swift 5.9

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

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#65252 In swiftlang/swift;

· andtie opened on Apr 18, 2023

Bad diagnostic when inheriting from class in extension

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

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

good first issueGood for newcomersGood for newcomers

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

swift 6.0

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

Status: Open.

#64903 In swiftlang/swift;

· AnthonyLatsis opened on Apr 4, 2023

Unable to compile extension of generic type with generic subtype using the same type parameters.

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

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

generic constraintsFeature → generics: generic constraintsFeature → generics: generic constraints

genericsFeature: generic declarations and typesFeature: generic declarations and types

swift 5.9

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

TypeResolver

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#64762 In swiftlang/swift;

· omv-libs opened on Mar 30, 2023

Nested generic extensions require <code>where</code> clauses instead of &lt;…&gt;

compilerThe Swift compiler itselfThe Swift compiler itself

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

featureA feature request or implementationA feature request or implementation

genericsFeature: generic declarations and typesFeature: generic declarations and types

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

TypeResolver

Status: Open.

#63866 In swiftlang/swift;

· JessyCatterwaul opened on Feb 23, 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