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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Successful build of ObjCDump, reference main (1e91df), with Swift 6.1 for macOS (SPM) on 30 Apr 2025 07:03:03 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/p-x9/swift-objc-dump.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/p-x9/swift-objc-dump
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 1e91dfd Merge pull request #14 from p-x9/feature/support-linux
Cloned https://github.com/p-x9/swift-objc-dump.git
Revision (git rev-parse @):
1e91dfd4c332f7015f4c46f99df8a53fbb495e20
SUCCESS checkout https://github.com/p-x9/swift-objc-dump.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/p-x9/swift-objc-dump.git
https://github.com/p-x9/swift-objc-dump.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ObjCDump",
  "name" : "ObjCDump",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ObjCDump",
      "targets" : [
        "ObjCDump"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ObjCTypeDecodeKitTests",
      "module_type" : "SwiftTarget",
      "name" : "ObjCTypeDecodeKitTests",
      "path" : "Tests/ObjCTypeDecodeKitTests",
      "sources" : [
        "ObjCMethodTypeDecodeTests.swift",
        "ObjCTypeDecodeKitTests.swift",
        "ObjCTypeEncodeTests.swift"
      ],
      "target_dependencies" : [
        "ObjCTypeDecodeKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ObjCTypeDecodeKit",
      "module_type" : "SwiftTarget",
      "name" : "ObjCTypeDecodeKit",
      "path" : "Sources/ObjCTypeDecodeKit",
      "product_memberships" : [
        "ObjCDump"
      ],
      "sources" : [
        "Extension/String+.swift",
        "Model/Node.swift",
        "Model/ObjCField.swift",
        "Model/ObjCMethodType.swift",
        "Model/ObjCModifier.swift",
        "Model/ObjCPropertyAttribute.swift",
        "Model/ObjCType.swift",
        "Model/types.swift",
        "ObjCMethodTypeDecoder.swift",
        "ObjCPropertyTypeDecoder.swift",
        "ObjCTypeDecoder.swift",
        "Protocol/ObjCTypeCodable.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ObjCDumpTests",
      "module_type" : "SwiftTarget",
      "name" : "ObjCDumpTests",
      "path" : "Tests/ObjCDumpTests",
      "sources" : [
        "ObjCDumpTests.swift"
      ],
      "target_dependencies" : [
        "ObjCDump"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ObjCDump",
      "module_type" : "SwiftTarget",
      "name" : "ObjCDump",
      "path" : "Sources/ObjCDump",
      "product_memberships" : [
        "ObjCDump"
      ],
      "sources" : [
        "Extension/ObjCType+.swift",
        "Model/ObjCCategoryInfo.swift",
        "Model/ObjCClassInfo.swift",
        "Model/ObjCIvarInfo.swift",
        "Model/ObjCMethodInfo.swift",
        "Model/ObjCPropertyInfo.swift",
        "Model/ObjCProtocolInfo.swift",
        "ObjCDump.swift"
      ],
      "target_dependencies" : [
        "ObjCTypeDecodeKit"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/15] Compiling ObjCTypeDecodeKit ObjCTypeDecoder.swift
[5/15] Compiling ObjCTypeDecodeKit ObjCPropertyTypeDecoder.swift
[6/15] Compiling ObjCTypeDecodeKit types.swift
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/types.swift:13:5: warning: let 'simpleTypes' is not concurrency-safe because non-'Sendable' type '[Character : ObjCType]' may have shared mutable state; this is an error in the Swift 6 language mode
11 | // ref: https://github.com/apple-oss-distributions/objc4/blob/01edf1705fbc3ff78a423cd21e03dfc21eb4d780/runtime/runtime.h#L1856
12 |
13 | let simpleTypes: [Character: ObjCType] = [
   |     |- warning: let 'simpleTypes' is not concurrency-safe because non-'Sendable' type '[Character : ObjCType]' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: add '@MainActor' to make let 'simpleTypes' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |     "@": .object(name: nil),
15 |     "#": .class,
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/ObjCType.swift:11:22: note: consider making enum 'ObjCType' conform to the 'Sendable' protocol
  9 | import Foundation
 10 |
 11 | public indirect enum ObjCType: Equatable {
    |                      `- note: consider making enum 'ObjCType' conform to the 'Sendable' protocol
 12 |     case `class`
 13 |     case selector
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/types.swift:39:5: warning: let 'modifiers' is not concurrency-safe because non-'Sendable' type '[Character : ObjCModifier]' may have shared mutable state; this is an error in the Swift 6 language mode
37 | ]
38 |
39 | let modifiers: [Character: ObjCModifier] = [
   |     |- warning: let 'modifiers' is not concurrency-safe because non-'Sendable' type '[Character : ObjCModifier]' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: add '@MainActor' to make let 'modifiers' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 |     "A": .atomic, // #include <stdatomic.h>
41 |     "j": .complex, // #include <complex.h>
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/ObjCModifier.swift:11:13: note: consider making enum 'ObjCModifier' conform to the 'Sendable' protocol
 9 | import Foundation
10 |
11 | public enum ObjCModifier: CaseIterable, Equatable {
   |             `- note: consider making enum 'ObjCModifier' conform to the 'Sendable' protocol
12 |     case complex
13 |     case atomic
[7/15] Compiling ObjCTypeDecodeKit String+.swift
[8/15] Compiling ObjCTypeDecodeKit Node.swift
[9/15] Emitting module ObjCTypeDecodeKit
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/types.swift:13:5: warning: let 'simpleTypes' is not concurrency-safe because non-'Sendable' type '[Character : ObjCType]' may have shared mutable state; this is an error in the Swift 6 language mode
11 | // ref: https://github.com/apple-oss-distributions/objc4/blob/01edf1705fbc3ff78a423cd21e03dfc21eb4d780/runtime/runtime.h#L1856
12 |
13 | let simpleTypes: [Character: ObjCType] = [
   |     |- warning: let 'simpleTypes' is not concurrency-safe because non-'Sendable' type '[Character : ObjCType]' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: add '@MainActor' to make let 'simpleTypes' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
14 |     "@": .object(name: nil),
15 |     "#": .class,
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/ObjCType.swift:11:22: note: consider making enum 'ObjCType' conform to the 'Sendable' protocol
  9 | import Foundation
 10 |
 11 | public indirect enum ObjCType: Equatable {
    |                      `- note: consider making enum 'ObjCType' conform to the 'Sendable' protocol
 12 |     case `class`
 13 |     case selector
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/types.swift:39:5: warning: let 'modifiers' is not concurrency-safe because non-'Sendable' type '[Character : ObjCModifier]' may have shared mutable state; this is an error in the Swift 6 language mode
37 | ]
38 |
39 | let modifiers: [Character: ObjCModifier] = [
   |     |- warning: let 'modifiers' is not concurrency-safe because non-'Sendable' type '[Character : ObjCModifier]' may have shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: add '@MainActor' to make let 'modifiers' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
40 |     "A": .atomic, // #include <stdatomic.h>
41 |     "j": .complex, // #include <complex.h>
/Users/admin/builder/spi-builder-workspace/Sources/ObjCTypeDecodeKit/Model/ObjCModifier.swift:11:13: note: consider making enum 'ObjCModifier' conform to the 'Sendable' protocol
 9 | import Foundation
10 |
11 | public enum ObjCModifier: CaseIterable, Equatable {
   |             `- note: consider making enum 'ObjCModifier' conform to the 'Sendable' protocol
12 |     case complex
13 |     case atomic
[10/15] Compiling ObjCTypeDecodeKit ObjCModifier.swift
[11/15] Compiling ObjCTypeDecodeKit ObjCPropertyAttribute.swift
[12/15] Compiling ObjCTypeDecodeKit ObjCType.swift
[13/16] Compiling ObjCTypeDecodeKit ObjCMethodTypeDecoder.swift
[14/16] Compiling ObjCTypeDecodeKit ObjCField.swift
[15/16] Compiling ObjCTypeDecodeKit ObjCMethodType.swift
[16/16] Compiling ObjCTypeDecodeKit ObjCTypeCodable.swift
[17/25] Compiling ObjCDump ObjCDump.swift
[18/25] Compiling ObjCDump ObjCPropertyInfo.swift
[19/25] Compiling ObjCDump ObjCMethodInfo.swift
[20/25] Compiling ObjCDump ObjCIvarInfo.swift
[21/25] Compiling ObjCDump ObjCProtocolInfo.swift
[22/25] Compiling ObjCDump ObjCCategoryInfo.swift
[23/25] Compiling ObjCDump ObjCType+.swift
[24/25] Compiling ObjCDump ObjCClassInfo.swift
[25/25] Emitting module ObjCDump
Build complete! (8.19s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "ObjCDump",
  "name" : "ObjCDump",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "ObjCDump",
      "targets" : [
        "ObjCDump"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "ObjCTypeDecodeKitTests",
      "module_type" : "SwiftTarget",
      "name" : "ObjCTypeDecodeKitTests",
      "path" : "Tests/ObjCTypeDecodeKitTests",
      "sources" : [
        "ObjCMethodTypeDecodeTests.swift",
        "ObjCTypeDecodeKitTests.swift",
        "ObjCTypeEncodeTests.swift"
      ],
      "target_dependencies" : [
        "ObjCTypeDecodeKit"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ObjCTypeDecodeKit",
      "module_type" : "SwiftTarget",
      "name" : "ObjCTypeDecodeKit",
      "path" : "Sources/ObjCTypeDecodeKit",
      "product_memberships" : [
        "ObjCDump"
      ],
      "sources" : [
        "Extension/String+.swift",
        "Model/Node.swift",
        "Model/ObjCField.swift",
        "Model/ObjCMethodType.swift",
        "Model/ObjCModifier.swift",
        "Model/ObjCPropertyAttribute.swift",
        "Model/ObjCType.swift",
        "Model/types.swift",
        "ObjCMethodTypeDecoder.swift",
        "ObjCPropertyTypeDecoder.swift",
        "ObjCTypeDecoder.swift",
        "Protocol/ObjCTypeCodable.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "ObjCDumpTests",
      "module_type" : "SwiftTarget",
      "name" : "ObjCDumpTests",
      "path" : "Tests/ObjCDumpTests",
      "sources" : [
        "ObjCDumpTests.swift"
      ],
      "target_dependencies" : [
        "ObjCDump"
      ],
      "type" : "test"
    },
    {
      "c99name" : "ObjCDump",
      "module_type" : "SwiftTarget",
      "name" : "ObjCDump",
      "path" : "Sources/ObjCDump",
      "product_memberships" : [
        "ObjCDump"
      ],
      "sources" : [
        "Extension/ObjCType+.swift",
        "Model/ObjCCategoryInfo.swift",
        "Model/ObjCClassInfo.swift",
        "Model/ObjCIvarInfo.swift",
        "Model/ObjCMethodInfo.swift",
        "Model/ObjCPropertyInfo.swift",
        "Model/ObjCProtocolInfo.swift",
        "ObjCDump.swift"
      ],
      "target_dependencies" : [
        "ObjCTypeDecodeKit"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Done.