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Build Information

Successful build of CustomTabView, reference main (32b9c6), with Swift 6.1 for macOS (SPM) on 29 Jul 2025 13:26:59 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: 4.64.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/NicFontana/SwiftUI-CustomTabView.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/NicFontana/SwiftUI-CustomTabView
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 32b9c69 Merge pull request #10 from NicFontana/fix/stale-child-view
Cloned https://github.com/NicFontana/SwiftUI-CustomTabView.git
Revision (git rev-parse @):
32b9c69474dc69d037adbae04f13aa1aa04b8d21
SUCCESS checkout https://github.com/NicFontana/SwiftUI-CustomTabView.git at main
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swiftui-customtabview",
      "name": "CustomTabView",
      "url": "https://github.com/NicFontana/SwiftUI-CustomTabView.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftUI-CustomTabView",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/NicFontana/SwiftUI-CustomTabView.git
[1/138] Fetching swiftui-customtabview
Fetched https://github.com/NicFontana/SwiftUI-CustomTabView.git from cache (0.93s)
Creating working copy for https://github.com/NicFontana/SwiftUI-CustomTabView.git
Working copy of https://github.com/NicFontana/SwiftUI-CustomTabView.git resolved at main (32b9c69)
warning: '.resolve-product-dependencies': dependency 'swiftui-customtabview' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/NicFontana/SwiftUI-CustomTabView.git
https://github.com/NicFontana/SwiftUI-CustomTabView.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CustomTabView",
  "name" : "CustomTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CustomTabView",
      "targets" : [
        "CustomTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CustomTabViewTests",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabViewTests",
      "path" : "Tests/CustomTabViewTests",
      "sources" : [
        "CustomTabViewTests.swift"
      ],
      "target_dependencies" : [
        "CustomTabView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CustomTabView",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabView",
      "path" : "Sources/CustomTabView",
      "product_memberships" : [
        "CustomTabView"
      ],
      "sources" : [
        "CustomTabView.swift",
        "EnvironmentValues+TabBarPosition.swift",
        "Example/BottomFloatingTabBarView.swift",
        "Example/ExampleView.swift",
        "Example/Tab.swift",
        "Example/TopIndicatorTabBarView.swift",
        "iOS/KeyboardReadable.swift",
        "iOS/UITabBarControllerRepresentable.swift",
        "macOS/NSTabBarControllerRepresentable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
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...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/12] Compiling CustomTabView Tab.swift
[4/12] Compiling CustomTabView NSTabBarControllerRepresentable.swift
[5/12] Compiling CustomTabView ExampleView.swift
[6/12] Compiling CustomTabView BottomFloatingTabBarView.swift
[7/12] Compiling CustomTabView UITabBarControllerRepresentable.swift
[8/12] Emitting module CustomTabView
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/EnvironmentValues+TabBarPosition.swift:24:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// An enumaration that is used to set the tab bar view position.
11 | public enum TabBarPosition {
   |             `- note: consider making enum 'TabBarPosition' conform to the 'Sendable' protocol
12 |     /// Puts the tab bar next to the content, at one edge of the scene.
13 |     ///
   :
22 |
23 | private struct TabBarPositionEnvironmentKey: EnvironmentKey {
24 |     static let defaultValue: TabBarPosition = .edge(.bottom)
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
25 | }
26 |
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/Example/TopIndicatorTabBarView.swift:83:16: warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 81 |
 82 | struct SizePreferenceKey: PreferenceKey {
 83 |     static var defaultValue: CGSize = .zero
    |                |- warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 84 |     static func reduce(value: inout CGSize, nextValue: () -> CGSize) {}
 85 | }
[9/12] Compiling CustomTabView KeyboardReadable.swift
[10/12] Compiling CustomTabView TopIndicatorTabBarView.swift
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/Example/TopIndicatorTabBarView.swift:83:16: warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 81 |
 82 | struct SizePreferenceKey: PreferenceKey {
 83 |     static var defaultValue: CGSize = .zero
    |                |- warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 84 |     static func reduce(value: inout CGSize, nextValue: () -> CGSize) {}
 85 | }
[11/12] Compiling CustomTabView CustomTabView.swift
[12/12] Compiling CustomTabView EnvironmentValues+TabBarPosition.swift
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/EnvironmentValues+TabBarPosition.swift:24:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// An enumaration that is used to set the tab bar view position.
11 | public enum TabBarPosition {
   |             `- note: consider making enum 'TabBarPosition' conform to the 'Sendable' protocol
12 |     /// Puts the tab bar next to the content, at one edge of the scene.
13 |     ///
   :
22 |
23 | private struct TabBarPositionEnvironmentKey: EnvironmentKey {
24 |     static let defaultValue: TabBarPosition = .edge(.bottom)
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: add '@MainActor' to make static property 'defaultValue' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
25 | }
26 |
Build complete! (9.74s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CustomTabView",
  "name" : "CustomTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CustomTabView",
      "targets" : [
        "CustomTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CustomTabViewTests",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabViewTests",
      "path" : "Tests/CustomTabViewTests",
      "sources" : [
        "CustomTabViewTests.swift"
      ],
      "target_dependencies" : [
        "CustomTabView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CustomTabView",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabView",
      "path" : "Sources/CustomTabView",
      "product_memberships" : [
        "CustomTabView"
      ],
      "sources" : [
        "CustomTabView.swift",
        "EnvironmentValues+TabBarPosition.swift",
        "Example/BottomFloatingTabBarView.swift",
        "Example/ExampleView.swift",
        "Example/Tab.swift",
        "Example/TopIndicatorTabBarView.swift",
        "iOS/KeyboardReadable.swift",
        "iOS/UITabBarControllerRepresentable.swift",
        "macOS/NSTabBarControllerRepresentable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.