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Thread safety issue in FoundationEssentials.Calendar

bugSomething isn't workingSomething isn't working

Status: Open.

#1886 In swiftlang/swift-foundation;

· TwirlySeal opened on Apr 8, 2026

Improved new-codable JSON support for large integers masquerading as floating points.

bugSomething isn't workingSomething isn't working

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

#1863 In swiftlang/swift-foundation;

· kperryua opened on Mar 30, 2026

Add a variant of KeyPathComparator that can be used with @MainActor types

enhancementNew feature or requestNew feature or request

Status: Open.

#1845 In swiftlang/swift-foundation;

· marcomasser opened on Mar 23, 2026

ucal performance opportunities

localization

Status: Open.

#1842 In swiftlang/swift-foundation;

· itingliu opened on Mar 21, 2026

Load ICU resources directly from ICU.ResourceBundle when applicable

localization

Status: Open.

#1841 In swiftlang/swift-foundation;

· itingliu opened on Mar 20, 2026

[New Codable API] AdaptorDecoder, AdaptorEncoder, et al

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1839 In swiftlang/swift-foundation;

· kperryua opened on Mar 19, 2026

[New Codable API] JSONElement

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1838 In swiftlang/swift-foundation;

· kperryua opened on Mar 19, 2026

[New Codable API] Visitors

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1837 In swiftlang/swift-foundation;

· kperryua opened on Mar 19, 2026

[New Codable API] CodingField, et al

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1835 In swiftlang/swift-foundation;

· kperryua opened on Mar 18, 2026

[New Codable API] Common/JSONDecodable + CommonDecoder/JSONDecoderProtocol

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1834 In swiftlang/swift-foundation;

· kperryua opened on Mar 18, 2026

[New Codable API] Common/JSONEncodable + CommonEncoder/JSONDirectEncoder

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1833 In swiftlang/swift-foundation;

· kperryua opened on Mar 18, 2026

[New Codable API] CodingError

new-codableRelated to new Swift (de)serialization APIsRelated to new Swift (de)serialization APIs

Status: Open.

Task

#1832 In swiftlang/swift-foundation;

· kperryua opened on Mar 18, 2026