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[NativeAOT] Fix ILC warning for NSObject.RegisterToggleRef #18889

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merged 6 commits into from
Sep 6, 2023
Merged

[NativeAOT] Fix ILC warning for NSObject.RegisterToggleRef #18889

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a3f25c5
Implement NSObject.RegisterToggleRef stub for NativeAOT to fix warning
simonrozsival Aug 31, 2023
7c6c68d
Auto-format source code
Aug 31, 2023
db3673d
Merge branch 'net8.0' into fix-nativeaot-nsobject-registertoggleref-w…
rolfbjarne Sep 1, 2023
a9db400
Do not try to implement the RegisterToggleRef stub on Mac
simonrozsival Sep 5, 2023
81fab74
Add a TODO comment
simonrozsival Sep 5, 2023
c4bca20
Auto-format source code
Sep 5, 2023
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6 changes: 6 additions & 0 deletions tools/dotnet-linker/AppBundleRewriter.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -370,6 +370,12 @@ public MethodReference Foundation_NSObject_FlagsSetterMethod {
return GetMethodReference (PlatformAssembly, Foundation_NSObject, "set_flags", "Foundation.NSObject::set_flags", predicate: null, out var _);
}
}

public MethodReference Foundation_NSObject_RegisterToggleRef {
get {
return GetMethodReference (PlatformAssembly, Foundation_NSObject, "RegisterToggleRef", "Foundation.NSObject::RegisterToggleRef", predicate: null, out var _);
}
}
#else
public FieldReference Foundation_NSObject_FlagsField {
get {
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18 changes: 18 additions & 0 deletions tools/dotnet-linker/Steps/ManagedRegistrarStep.cs
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Expand Up @@ -166,6 +166,8 @@ protected override void TryProcessAssembly (AssemblyDefinition assembly)
var md = abr.RegistrarHelper_RuntimeTypeHandleEquals.Resolve ();
md.IsPublic = true;
Annotations.Mark (md);
} else if (App.XamarinRuntime == XamarinRuntime.NativeAOT && Configuration.Profile.IsProductAssembly (assembly)) {
ImplementNSObjectRegisterToggleRefMethodStub ();
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This doesn't really fit with the managed static registrar, but I think it's good for now.

At some point we might want to move random stuff out of the managed static registrar and into a "MakeEverythingWorkWithNativeAOTStep"...

}

abr.ClearCurrentAssembly ();
Expand Down Expand Up @@ -1376,5 +1378,21 @@ MethodDefinition CloneConstructorWithNativeHandle (MethodDefinition ctor)

return clonedCtor;
}

void ImplementNSObjectRegisterToggleRefMethodStub ()
{
// The NSObject.RegisterToggleRef method is a Mono icall that is unused in NativeAOT
// and we need to modify it so that ILC doesn't report the following warning:
//
// ILC: Method '[Microsoft.iOS]Foundation.NSObject.RegisterToggleRef(NSObject,native int,bool)' will always throw because:
// Invalid IL or CLR metadata in 'Void Foundation.NSObject.RegisterToggleRef(Foundation.NSObject, IntPtr, Boolean)'
//
var registerToggleRef = abr.Foundation_NSObject_RegisterToggleRef.Resolve ();
registerToggleRef.IsPublic = false;
registerToggleRef.IsInternalCall = false;

registerToggleRef.CreateBody (out var il);
il.Emit (OpCodes.Ret);
}
}
}
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