fix: Concurrency crash for Swift 6

.github/workflows/ui-tests-critical.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v4
-      - run: ./scripts/ci-select-xcode.sh 16
+      - run: ./scripts/ci-select-xcode.sh "16.0"
       - uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true

.github/workflows/ui-tests.yml

@@ -61,7 +61,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - run: ./scripts/ci-select-xcode.sh ${{matrix.xcode}}
-
+      
       # GitHub Actions sometimes fail to launch the UI tests. Therefore we retry
       - name: Run Fastlane
         run: for i in {1..2}; do fastlane ui_tests_ios_swiftui device:"${{matrix.device}}" && break ; done
@@ -110,3 +110,22 @@ jobs:
           path: |
             ~/Library/Logs/scan/*.log
             ./fastlane/test_output/**
+
+  ui-tests-swift6:
+    name: UI Tests for iOS-Swift6 Simulator
+    runs-on: macos-14
+
+    steps:
+      - uses: actions/checkout@v4
+      - run: ./scripts/ci-select-xcode.sh "16.0"
+      - name: Run Fastlane
+        run: fastlane ui_tests_ios_swift6
+
+      - name: Archiving Raw Test Logs
+        uses: actions/upload-artifact@v4
+        if: ${{  failure() || cancelled() }}
+        with:
+          name: raw-ios-swift-test-output-${{matrix.xcode}}-${{matrix.device}}
+          path: |
+            ~/Library/Logs/scan/*.log
+            ./fastlane/test_output/**

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Fixes
 
 - Keep PropagationContext when cloning scope (#4518)
+- Concurrency crash with Swift 6 (#4512)
 
 ## 8.40.1
 

Samples/iOS-Swift/iOS-Swift.xcodeproj/xcshareddata/xcschemes/iOS-Swift6.xcscheme

@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1610"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "D8F71A4B2CDD03B900334022"
+               BuildableName = "iOS-Swift6.app"
+               BlueprintName = "iOS-Swift6"
+               ReferencedContainer = "container:iOS-Swift.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "D8F71A6A2CDD03BB00334022"
+               BuildableName = "iOS-Swift6UITests.xctest"
+               BlueprintName = "iOS-Swift6UITests"
+               ReferencedContainer = "container:iOS-Swift.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+         <TestableReference
+            skipped = "NO"
+            parallelizable = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "D8F610A12CDCBCF900A77147"
+               BuildableName = "iOS-Swift6Tests.xctest"
+               BlueprintName = "iOS-Swift6Tests"
+               ReferencedContainer = "container:iOS-Swift.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "D8F71A4B2CDD03B900334022"
+            BuildableName = "iOS-Swift6.app"
+            BlueprintName = "iOS-Swift6"
+            ReferencedContainer = "container:iOS-Swift.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "D8F71A4B2CDD03B900334022"
+            BuildableName = "iOS-Swift6.app"
+            BlueprintName = "iOS-Swift6"
+            ReferencedContainer = "container:iOS-Swift.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

Samples/iOS-Swift/iOS-Swift6/AppDelegate.swift

@@ -0,0 +1,48 @@
+import Sentry
+import UIKit
+
+@main
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    func startSentry() {
+        SentrySDK.start(configureOptions: { options in
+            options.dsn = "https://[email protected]/5428557"
+            options.beforeSend = { event in
+                print("Sentry: beforeSend called")
+                return event
+            }
+            options.beforeSendSpan = { span in
+                print("Sentry: beforeSendSpan called")
+                return span
+            }
+            options.beforeCaptureScreenshot = { _ in
+                print("Sentry: beforeCaptureScreenshot called")
+                return true
+            }
+            options.beforeCaptureViewHierarchy = { _ in
+                print("Sentry: beforeCaptureViewHierarchy called")
+                return true
+            }
+            options.attachScreenshot = true
+            options.attachViewHierarchy = true
+            options.debug = true
+            options.sampleRate = 1
+            options.tracesSampleRate = 1
+        })
+
+    }
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        startSentry()
+        return true
+    }
+
+    // MARK: UISceneSession Lifecycle
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
+    }
+
+}

Samples/iOS-Swift/iOS-Swift6/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Samples/iOS-Swift/iOS-Swift6/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,35 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "tinted"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Samples/iOS-Swift/iOS-Swift6/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Samples/iOS-Swift/iOS-Swift6/Base.lproj/LaunchScreen.storyboard

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" xcode11CocoaTouchSystemColor="systemBackgroundColor" cocoaTouchSystemColor="whiteColor"/>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

Samples/iOS-Swift/iOS-Swift6/Base.lproj/Main.storyboard

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="23504" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+    <device id="retina6_12" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="23506"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="System colors in document resources" minToolsVersion="11.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="iOS_Swift6" customModuleProvider="target" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="393" height="852"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="system" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="q7a-UR-VaD">
+                                <rect key="frame" x="133" y="421" width="127" height="35"/>
+                                <accessibility key="accessibilityConfiguration" identifier="btError"/>
+                                <state key="normal" title="Button"/>
+                                <buttonConfiguration key="configuration" style="plain" title="Capture Error"/>
+                                <connections>
+                                    <action selector="buttonTapped:" destination="BYZ-38-t0r" eventType="touchUpInside" id="1ma-mq-zKe"/>
+                                </connections>
+                            </button>
+                        </subviews>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                        <color key="backgroundColor" systemColor="systemBackgroundColor"/>
+                        <constraints>
+                            <constraint firstItem="q7a-UR-VaD" firstAttribute="centerX" secondItem="6Tk-OE-BBY" secondAttribute="centerX" id="Byz-jG-rg1"/>
+                            <constraint firstItem="q7a-UR-VaD" firstAttribute="centerY" secondItem="6Tk-OE-BBY" secondAttribute="centerY" id="vr4-Vs-njb"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="138" y="5"/>
+        </scene>
+    </scenes>
+    <resources>
+        <systemColor name="systemBackgroundColor">
+            <color white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+        </systemColor>
+    </resources>
+</document>

Samples/iOS-Swift/iOS-Swift6/Info.plist

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>UIApplicationSceneManifest</key>
+	<dict>
+		<key>UIApplicationSupportsMultipleScenes</key>
+		<false/>
+		<key>UISceneConfigurations</key>
+		<dict>
+			<key>UIWindowSceneSessionRoleApplication</key>
+			<array>
+				<dict>
+					<key>UISceneConfigurationName</key>
+					<string>Default Configuration</string>
+					<key>UISceneDelegateClassName</key>
+					<string>$(PRODUCT_MODULE_NAME).SceneDelegate</string>
+					<key>UISceneStoryboardFile</key>
+					<string>Main</string>
+				</dict>
+			</array>
+		</dict>
+	</dict>
+</dict>
+</plist>

Samples/iOS-Swift/iOS-Swift6/SceneDelegate.swift

@@ -0,0 +1,24 @@
+import UIKit
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+    var window: UIWindow?
+
+    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
+        guard let _ = (scene as? UIWindowScene) else { return }
+    }
+
+    func sceneDidDisconnect(_ scene: UIScene) {
+    }
+
+    func sceneDidBecomeActive(_ scene: UIScene) {
+    }
+
+    func sceneWillResignActive(_ scene: UIScene) {
+    }
+
+    func sceneWillEnterForeground(_ scene: UIScene) {
+    }
+
+    func sceneDidEnterBackground(_ scene: UIScene) {
+    }
+}

Samples/iOS-Swift/iOS-Swift6/ViewController.swift

@@ -0,0 +1,10 @@
+import Sentry
+import UIKit
+
+class ViewController: UIViewController {
+    @IBAction func buttonTapped(_ sender: Any) {
+        DispatchQueue.global(qos: .utility).async {
+            SentrySDK.capture(error: NSError(domain: "Swift 6 Test", code: -1))
+        }
+    }
+}