[release/10.0.1xx-preview6] Merge main into release/10.0.1xx-preview6. #23085
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… an object in the finalizer queue. (#23072) The following happens: 1. An instance of a custom NSObject subclass is created, with both a native instance and the corresponding managed wrapper. 2. Native code creates a weak reference to the native instance. 3. No other managed code references the managed instance, and there's no non-weak native reference to the native instance, so the GC schedules the managed instance for finalization. 4. Native code fetches the native instance from the weak reference. 5. Native code thinks it can do whatever it wants with the native instance, because it got a perfectly valid (and retained) native instance. Unfortunately, there's no way to stop the managed instance from being finalized (which happens on a background thread anyway, so there's no thread-safe way to do it), which means havoc ensues. The most frequent manifestation of this problem has been like this: ObjCRuntime.RuntimeException: Failed to marshal the Objective-C object 0x13d566800 (type: Microsoft_Maui_Platform_MauiTextField). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'Microsoft.Maui.Platform.MauiTextField' does not have a constructor that takes one NativeHandle argument). at ObjCRuntime.Runtime.MissingCtor(IntPtr , IntPtr , Type , MissingCtorResolution , IntPtr , RuntimeMethodHandle ) at ObjCRuntime.Runtime.ConstructNSObject[NSObject](IntPtr , Type , MissingCtorResolution , IntPtr , RuntimeMethodHandle ) at ObjCRuntime.Runtime.ConstructNSObject[NSObject](IntPtr , Type , MissingCtorResolution ) at ObjCRuntime.Runtime.ConstructNSObject(IntPtr , IntPtr , MissingCtorResolution ) at ObjCRuntime.Runtime.GetNSObject(IntPtr , MissingCtorResolution , Boolean ) at ObjCRuntime.Runtime.GetNSObject(IntPtr ) at ObjCRuntime.Runtime.InvokeConformsToProtocol(IntPtr , IntPtr ) at ObjCRuntime.Runtime.invoke_conforms_to_protocol(IntPtr obj, IntPtr protocol, IntPtr* exception_gchandle) Exception_EndOfInnerExceptionStack but other problems can also occur. This is a rather complicated issue to fix, because: * There's no way to be notified when native code creates a weak reference to a native instance. * There's not even a way to know if anybody has a weak reference to a native instance. * I also looked into manually clearing the weak references for a native instance, but that's not possible either. However, it is possible to basically say "nope!" when native code tries to fetch a native instance from a weak reference: We override the '[NSObject retainWeakReference]' method for all custom NSObject subclasses, and return FALSE if the corresponding managed object has been scheduled for finalization (otherwise call the base class implementation). The ['[NSObject retainWeakReference]'][1] method is public, but it's not documented how it's supposed to behave. Fortunately, the corresponding [source code][2] is public, so we can figure out the semantics ourselves: return `TRUE` if the object can be / was retained, `FALSE` otherwise. * Fixes #21648. * Fixes dotnet/maui#28261. * Fixes #19076. Might also fix the following issues: * #22867 * #19579 * #4207 * https://bugzilla.xamarin.com/show_bug.cgi?id=34242 (https://web.archive.org/web/20170630214134/https://bugzilla.xamarin.com/show_bug.cgi?id=34242) [1]: https://developer.apple.com/documentation/foundation/nsproxy/retainweakreference [2]: https://github.com/apple-oss-distributions/objc4/blob/f126469408dc82bd3f327217ae678fd0e6e3b37c/runtime/NSObject.mm#L539-L541
…1: Build ID 11793019 (#23081) This is the pull request automatically created by the OneLocBuild task in the build process to check-in localized files generated based upon translation source files (.lcl files) handed-back from the downstream localization pipeline. If there are issues in translations, visit https://aka.ms/icxLocBug and log bugs for fixes. The OneLocBuild wiki is https://aka.ms/onelocbuild and the localization process in general is documented at https://aka.ms/AllAboutLoc. ---------
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Brings important changes around Xamarin deprecation and Mac paths: - Updated Xamarin.Messaging to 18.0.136-g9e200fbc6d - Added target before SayHello to set default Messaging context path values - Adapted code to Messaging API changes - IL merge BouncyCastle.Cryptography (new SSH.NET dependency) - Updated from old Xamarin path to new maui path in test scripts - Fixed CompileNativeCode to correctly resolve dotnet packs paths --------- Co-authored-by: Rolf Bjarne Kvinge <[email protected]>
…-release/10.0.1xx-preview6-2025-06-19
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✅ [PR Build #2084384] Build passed (Detect API changes) ✅Pipeline on Agent |
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✅ API diff for current PR / commit.NET ( No breaking changes )✅ API diff vs stable.NET ( No breaking changes )ℹ️ Generator diffGenerator Diff: vsdrops (html) vsdrops (raw diff) gist (raw diff) - Please review changes) Pipeline on Agent |
✅ [CI Build #2084384] Build passed (Build macOS tests) ✅Pipeline on Agent |
💻 [CI Build #2084384] Tests on macOS X64 - Mac Sonoma (14) passed 💻✅ All tests on macOS X64 - Mac Sonoma (14) passed. Pipeline on Agent |
💻 [CI Build #2084384] Tests on macOS M1 - Mac Ventura (13) passed 💻✅ All tests on macOS M1 - Mac Ventura (13) passed. Pipeline on Agent |
💻 [CI Build #2084384] Tests on macOS M1 - Mac Monterey (12) passed 💻✅ All tests on macOS M1 - Mac Monterey (12) passed. Pipeline on Agent |
💻 [CI Build #2084384] Tests on macOS arm64 - Mac Sequoia (15) passed 💻✅ All tests on macOS arm64 - Mac Sequoia (15) passed. Pipeline on Agent |
🔥 [CI Build #2084384] Test results 🔥Test results❌ Tests failed on VSTS: test results 0 tests crashed, 1 tests failed, 119 tests passed. Failures❌ monotouch tests (macOS) [attempt 3]
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