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compiler crashes when using element in generic pack iteration ("Cannot mangle free-standing archetype")

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.

#83539 In swiftlang/swift;

· lukaskollmer opened on Aug 5, 2025

<code>isolated</code> keyword incorrectly permitted in inheritance clause

accepts invalidBug: Accepts invalidBug: Accepts invalid

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

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

Status: Open.

#83538 In swiftlang/swift;

· hamishknight opened on Aug 5, 2025

@_specialize attribute on generic function fails to compile in debug mode

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.

#83537 In swiftlang/swift;

· flexlixrup opened on Aug 5, 2025

[6.2] C++ interop build failed due to redundant template instantiation (worked in 6.1.2)

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.

#83536 In swiftlang/swift;

· blindspotbounty opened on Aug 5, 2025

[AutoDiff] Add support for parameter pack differentiation

AutoDiff

new feature

task

Status: Open.

#83533 In swiftlang/swift;

· asl opened on Aug 5, 2025

Xcode 26 beta 4 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

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

Status: Open.

#83528 In swiftlang/swift;

· poshmarkyqi opened on Aug 4, 2025

<code>import WASILibc</code> is unavailable in Embedded Swift for WASI

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

embeddedEmbedded SwiftEmbedded Swift

importFeature → declarations: `import` declarationsFeature → declarations: `import` declarations

WASIWebAssembly System Interface supportWebAssembly System Interface support

WebAssemblyPlatform: WebAssemblyPlatform: WebAssembly

Status: Open.

#83513 In swiftlang/swift;

· MaxDesiatov opened on Aug 4, 2025

[6.2 Nightly] Runtime crash near <code>swift_getObjectType</code> only on macOS

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.

#83507 In swiftlang/swift;

· MahdiBM opened on Aug 3, 2025

Enable all remaining Embedded Swift for WASI tests

embeddedEmbedded SwiftEmbedded Swift

task

test suiteArea: test suiteArea: test suite

WASIWebAssembly System Interface supportWebAssembly System Interface support

WebAssemblyPlatform: WebAssemblyPlatform: WebAssembly

Status: Open.

#83482 In swiftlang/swift;

· MaxDesiatov opened on Aug 1, 2025

· 

Swift 6.3

nonisolated GAIT initializers should behave more like synchronous actor initializers

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

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

Status: Open.

#83478 In swiftlang/swift;

· jamieQ opened on Aug 1, 2025

[6.2 nightly] Compilation crash: "Found outside of lifetime use?!" "Found ownership error?!"

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.

#83476 In swiftlang/swift;

· MahdiBM opened on Aug 1, 2025

Poor codegen for typed throws

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

performance

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

Status: Open.

Bug

#83470 In swiftlang/swift;

· rauhul opened on Jul 31, 2025