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Closure expressions annotated with @concurrent are non-isolated even when capturing isolation

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

Status: Open.

Bug

#89014 In swiftlang/swift;

· NotTheNHK opened on May 11, 2026

Failure to produce diagnostic on function call with trailing closure containing multiple error diagnostics

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

Status: Open.

Bug

#89013 In swiftlang/swift;

· svmkr-dev opened on May 11, 2026

Failed to produce diagnostic for expression; please submit a bug report (https://swift.org/contributing/#reporting-bugs)

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

Status: Open.

Bug

#89000 In swiftlang/swift;

· fbartolom opened on May 11, 2026

Peer macro that contains nested extension macro causes linker error when used as a dependency

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

Status: Open.

Bug

#88995 In swiftlang/swift;

· atifdev10 opened on May 10, 2026

Add Ubuntu 26.04 (Oracular) release builds

Status: Open.

#88994 In swiftlang/swift;

· yeikel opened on May 10, 2026

Closure with isolated actor parameter resumes on incorrect isolation

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

nonisolated(nonsending)Feature → modifiers: The "nonisolated(nonsending)" modifierFeature → modifiers: The "nonisolated(nonsending)" modifier

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

Status: Open.

Bug

#88993 In swiftlang/swift;

· bjhomer opened on May 10, 2026

Compiler crash when passing uninitialized instance property to self.init in convenience init

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.

Bug

#88991 In swiftlang/swift;

· ongsalt opened on May 9, 2026

@_implements doesn't work with opaque types

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

Status: Open.

Bug

#88988 In swiftlang/swift;

· atifdev10 opened on May 9, 2026

CSE/SILCombine assertion: instance-canonical pack-expand on each values of consuming self

Status: Open.

#88987 In swiftlang/swift;

· coenttb opened on May 9, 2026

[UnderscoreOwned] @_owned consuming get on generic ~Copyable enum rejected as 'consumed when borrowed by non-Escapable type'

Status: Open.

#88986 In swiftlang/swift;

· coenttb opened on May 9, 2026

[Swift 6.4-dev nightly] CSE pass assertion: pack-expand of consuming-parameter member-access

Status: Open.

#88985 In swiftlang/swift;

· coenttb opened on May 9, 2026

Compiler allows a type with isolated conformance to conform SendableMetatype protocol

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

Status: Open.

Bug

#88982 In swiftlang/swift;

· rayx opened on May 9, 2026