Fix some Swift 6 warnings (#224)

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Author: stephencelis

.github/workflows/ci.yml

@@ -16,11 +16,11 @@ concurrency:
 jobs:
   macos:
     name: macOS
-    runs-on: macos-13
+    runs-on: macos-14
     strategy:
       matrix:
         config: ['debug', 'release']
-        xcode: ['14.3.1', '15.0.1']
+        xcode: ['14.3.1', '15.4.0']
     steps:
       - uses: actions/checkout@v4
       - name: Select Xcode ${{ matrix.xcode }}
@@ -45,12 +45,19 @@ jobs:
   #       run: make test-integration
 
   ubuntu:
-    name: Linux
+    strategy:
+      matrix:
+        swift:
+          - '5.10'
+    name: Ubuntu (Swift ${{ matrix.swift }})
     runs-on: ubuntu-latest
+    container: swift:${{ matrix.swift }}
     steps:
       - uses: actions/checkout@v4
       - name: Run tests
-        run: make test-swift
+        run: swift test --parallel
+      - name: Run tests (release)
+        run: swift test -c release --parallel
 
   # wasm:
   #   name: Wasm
@@ -75,17 +82,3 @@ jobs:
   #       run: swift test
   #     - name: Run tests (release)
   #       run: swift test -c release
-
-  static-stdlib:
-    strategy:
-      matrix:
-        image: ['swift:5.7-focal', 'swift:5.8-focal']
-    runs-on: ubuntu-latest
-    container:
-      image: ${{ matrix.image }}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Build for static-stdlib (debug)
-        run: swift build -c debug --static-swift-stdlib
-      - name: Build for static-stdlib (release)
-        run: swift build -c release --static-swift-stdlib

Sources/Dependencies/Internal/Deprecations.swift

@@ -30,9 +30,9 @@ extension ActorIsolated {
     deprecated,
     message: "Use the non-async version of 'withValue'."
   )
-  public func withValue<T>(
+  public func withValue<T: Sendable>(
     _ operation: @Sendable (inout Value) async throws -> T
-  ) async rethrows -> T {
+  ) async rethrows -> T where Value: Sendable {
     var value = self.value
     defer { self.value = value }
     return try await operation(&value)

Sources/Dependencies/Internal/RuntimeWarnings.swift

@@ -43,7 +43,9 @@ func runtimeWarn(
   #endif
 }
 
-#if DEBUG
+// NB: We can change this to `#if DEBUG` when we drop support for Swift <5.9
+#if RELEASE
+#else
   #if canImport(os)
     import Foundation
     import os
@@ -53,8 +55,15 @@ func runtimeWarn(
     //     To work around this, we hook into SwiftUI's runtime issue delivery mechanism, instead.
     //
     // Feedback filed: https://gist.github.com/stephencelis/a8d06383ed6ccde3e5ef5d1b3ad52bbc
-    @usableFromInline
-    let dso = { () -> UnsafeMutableRawPointer in
+    #if swift(>=5.10)
+      @usableFromInline
+      nonisolated(unsafe) let dso = getSwiftUIDSO()
+    #else
+      @usableFromInline
+      let dso = getSwiftUIDSO()
+    #endif
+
+    private func getSwiftUIDSO() -> UnsafeMutableRawPointer {
       let count = _dyld_image_count()
       for i in 0..<count {
         if let name = _dyld_get_image_name(i) {
@@ -67,7 +76,7 @@ func runtimeWarn(
         }
       }
       return UnsafeMutableRawPointer(mutating: #dsohandle)
-    }()
+    }
   #elseif os(WASI)
     #if canImport(JavaScriptCore)
       import JavaScriptCore