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Tautological error when attempting to use unapplied reference to method in property initializer

compilerThe Swift compiler itselfThe Swift compiler itself

diagnostics qualityBug: The quality of compiler diagnosticsBug: The quality of compiler diagnostics

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

Status: Open.

Bug

#89920 In swiftlang/swift;

· hamishknight opened on Jun 12, 2026

Failed to produce diagnostic for missing member in type(of:)

compilerThe Swift compiler itselfThe Swift compiler itself

diagnostics qualityBug: The quality of compiler diagnosticsBug: The quality of compiler diagnostics

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

Status: Open.

Bug

#89918 In swiftlang/swift;

· hamishknight opened on Jun 12, 2026

[Windows] regression - not reading environment variable cache in swift runtime

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

Status: Open.

Bug

#89915 In swiftlang/swift;

· carlpeto opened on Jun 12, 2026

Swift 6.4 CopyPropagation produces ownership-invalid SIL for @Table-generated column getter under -O -enable-default-cmo

Status: Open.

#89910 In swiftlang/swift;

· jpsim opened on Jun 12, 2026

Regression: cross-module lookup of an associated type witnessed by a protocol-extension typealias fails in Swift 6.4

Status: Open.

#89909 In swiftlang/swift;

· jpsim opened on Jun 12, 2026

Example of flaky Sendable conformance inference

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

conformancesFeature → protocol: protocol conformancesFeature → protocol: protocol conformances

SendableArea → standard library: The Sendable protocolArea → standard library: The Sendable protocol

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

Status: Open.

#89908 In swiftlang/swift;

· slavapestov opened on Jun 12, 2026

Move only checker assertion failure: MoveOnlyAddressCheckerUtils.cpp:3067 Assertion `... "Should either have a pure live out, found an init, or we should have found an error." failed.

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

#89905 In swiftlang/swift;

· jamieQ opened on Jun 12, 2026

Memory safety hole involving Spans and mutations across Tasks

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

Status: Open.

Bug

#89904 In swiftlang/swift;

· jamieQ opened on Jun 12, 2026

Default protocol implementation isn't isolated with actor-isolated conformance

compilerThe Swift compiler itselfThe Swift compiler itself

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

diagnostics qualityBug: The quality of compiler diagnosticsBug: The quality of compiler diagnostics

Status: Open.

Bug

#89903 In swiftlang/swift;

· simba909 opened on Jun 12, 2026

A global actor's shared property can also be a task local

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

Status: Open.

Bug

#89901 In swiftlang/swift;

· mattmassicotte opened on Jun 12, 2026

package(set) can mean both a function call and an access modifier

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

Status: Open.

Bug

#89898 In swiftlang/swift;

· tosh7 opened on Jun 12, 2026

Incorrect actor isolation computation with nested closures can lead to compiler crash

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

Status: Open.

Bug

#89855 In swiftlang/swift;

· jamieQ opened on Jun 11, 2026