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AnyHashable type-erasing behaves differently 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.

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

Foundation

LinuxPlatform: LinuxPlatform: Linux

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

Status: Open.

#77508 In swiftlang/swift;

· tomsci opened on Nov 9, 2024

Incorrect warning when casting in parameter pack iteration

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

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

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

unexpected warningBug: Unexpected warningBug: Unexpected warning

Status: Open.

#77139 In swiftlang/swift;

· alexito4 opened on Oct 21, 2024

Swift 6 Regression: Existential Casting Is Broken

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

runtimeThe Swift RuntimeThe Swift Runtime

Status: Open.

#74646 In swiftlang/swift;

· stephencelis opened on Jun 23, 2024

Subtype relations of existential metatypes are not consistent in the language.

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

existentialsFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased valuesFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values

expressionsFeature: expressionsFeature: expressions

metatypesFeature → types: MetatypesFeature → types: Metatypes

runtimeThe Swift RuntimeThe Swift Runtime

swift 6.0

typesFeature: typesFeature: types

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

Status: Open.

#70874 In swiftlang/swift;

· CrystDragon opened on Jan 12, 2024

Conditional cast from 'any Error' to 'any Equatable' always succeeds... but doesn't

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

compilerThe Swift compiler itselfThe Swift compiler itself

expressionsFeature: expressionsFeature: expressions

swift 6.0

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

unexpected warningBug: Unexpected warningBug: Unexpected warning

Status: Open.

#70114 In swiftlang/swift;

· jasonbobier opened on Nov 30, 2023

Compiler's wrong code interpretation causes loop of error messages

bridgingFeature → casting: type bridgingFeature → casting: type bridging

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

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

fix-itsFeature: diagnostic fix-itsFeature: diagnostic fix-its

swift 5.8

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

Status: Open.

#67720 In swiftlang/swift;

· sjvolkmann opened on Aug 3, 2023

Compiler crash when compiling code that initializes AnyClass

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

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

IRGenLLVM IR generationLLVM IR generation

metatypesFeature → types: MetatypesFeature → types: Metatypes

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

swift 5.8

Status: Open.

#66089 In swiftlang/swift;

· danielpunkass opened on May 23, 2023

[Source compatibility suite] swift-protobuf-plugin-example failing to build - Could not cast value of type '__NSCFString' (0x7ff851edadf8) to 'Swift.String' (0x10271f710).

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

runtimeThe Swift RuntimeThe Swift Runtime

source compatibility suiteFlag: An issue that surfaced in the source compatibility suiteFlag: An issue that surfaced in the source compatibility suite

swift 5.9

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#65202 In swiftlang/swift;

· justice-adams-apple opened on Apr 14, 2023

Bad diagnostic when attempting to use <code>as?</code> in a 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.

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

compilerThe Swift compiler itselfThe Swift compiler itself

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

pattern matchingFeature: pattern matchingFeature: pattern matching

patternsFeature: patternsFeature: patterns

swift 5.9

Status: Open.

#65117 In swiftlang/swift;

· hamishknight opened on Apr 12, 2023

Casting to constrained existential in correct availability context fails at link time on older OSs

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

compilerThe Swift compiler itselfThe Swift compiler itself

constrained existentialsFeature → existentials: constrained existentials such as 'any Collection<Int>'Feature → existentials: constrained existentials such as 'any Collection<Int>'

existentialsFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased valuesFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values

expressionsFeature: expressionsFeature: expressions

IRGenLLVM IR generationLLVM IR generation

swift 5.9

unexpected errorBug: Unexpected errorBug: Unexpected error

Status: Open.

#64858 In swiftlang/swift;

· AnthonyLatsis opened on Apr 3, 2023

Having code that casts a generic any RangeExpression&lt;T&gt; will cause app to instantly crash at startup, on iOS 15 devices.

accepts invalidBug: Accepts invalidBug: Accepts invalid

availabilityThe @available attribute and availability checking in generalThe @available attribute and availability checking in general

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

compilerThe Swift compiler itselfThe Swift compiler itself

constrained existentialsFeature → existentials: constrained existentials such as 'any Collection<Int>'Feature → existentials: constrained existentials such as 'any Collection<Int>'

existentialsFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased valuesFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values

expressionsFeature: expressionsFeature: expressions

swift 5.9

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

Status: Open.

#64657 In swiftlang/swift;

· nifly opened on Mar 27, 2023

Optimiser fails to devirtualise cast to existential followed by immediate unboxing

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

castingFeature: explicit casting (is, as, as? and as!)Feature: explicit casting (is, as, as? and as!)

compilerThe Swift compiler itselfThe Swift compiler itself

constrained existentialsFeature → existentials: constrained existentials such as 'any Collection<Int>'Feature → existentials: constrained existentials such as 'any Collection<Int>'

existentialsFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased valuesFeature: values of types like `any Collection`, `Any` and `AnyObject`; type-erased values

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

Status: Open.

#62264 In swiftlang/swift;

· karwa opened on Nov 27, 2022