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.NET 6: Don't suppress trim analysis warnings when linking all assemblies #5856

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sbomer opened this issue Apr 20, 2021 · 4 comments
Closed

.NET 6: Don't suppress trim analysis warnings when linking all assemblies #5856

sbomer opened this issue Apr 20, 2021 · 4 comments
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@jonathanpeppers
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.NET 6

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@sbomer
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sbomer commented Apr 20, 2021

dotnet/sdk#16865 adds a property (available in preview4) TrimmerDefaultAction which can be set to link to enable "LinkAll" behavior. Consider not suppressing trim analysis warnings in this case to warn users about possible issues.

This can be done by adding a condition to https://github.com/xamarin/xamarin-android/blob/97b3cc0eed4fadc4289c5d4ff8ea2d000f7828c5/src/Xamarin.Android.Build.Tasks/Microsoft.Android.Sdk/targets/Microsoft.Android.Sdk.DefaultProperties.targets#L56 assuming those targets are imported after the project file but before the .NET illink targets (so that it takes into account any user-set value for TrimmerDefaultAction):

<SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == '' And '$(TrimmerDefaultAction)' != 'link'">true</SuppressTrimAnalysisWarnings>

@jonathanpeppers @marek-safar
@sbomer sbomer added the needs-triage Issues that need to be assigned. label Apr 20, 2021
@jpobst jpobst assigned jonathanpeppers and unassigned jpobst Apr 20, 2021
@jpobst jpobst removed the needs-triage Issues that need to be assigned. label Apr 20, 2021
@jpobst jpobst added this to the One .NET milestone Apr 20, 2021
@jpobst jpobst changed the title Don't suppress trim analysis warnings when linking all assemblies .NET 6: Don't suppress trim analysis warnings when linking all assemblies Apr 20, 2021
@jonathanpeppers jonathanpeppers mentioned this issue Apr 23, 2021
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jonathanpeppers added a commit to jonathanpeppers/xamarin-android that referenced this issue Apr 23, 2021
@jonathanpeppers
[One .NET] clean up default properties
5aa7cee 
Fixes: dotnet#5856

WIP
@jonathanpeppers
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@sbomer I tried these suggestions in 5aa7cee.

I'm getting some warnings when using TrimmerDefaultAction=link:

packages\microsoft.android.runtime.android-arm64\11.0.200-ci.main.232\runtimes\android-arm64\lib\net6.0\Java.Interop.dll warning IL2104: Assembly 'Java.Interop' produced trim warnings. For more information see https://aka.ms/dotnet-illink/libraries 
packages\microsoft.android.runtime.android-arm64\11.0.200-ci.main.232\runtimes\android-arm64\lib\net6.0\Mono.Android.dll warning IL2104: Assembly 'Mono.Android' produced trim warnings. For more information see https://aka.ms/dotnet-illink/libraries

But I don't see exactly what the issues are? I think we probably want to fix them.

Log: msbuild.zip

@sbomer
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sbomer commented Apr 23, 2021

@jonathanpeppers try setting <TrimmerSingleWarn>false</TrimmerSingleWarn> to get the detailed warnings (there might be more than a few depending on what the problem is).

@marek-safar
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@jonathanpeppers that work was requested in #5652

@jonathanpeppers
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Ok, thanks, the warnings are:

ILLink warning IL2072: Java.Interop.JniRuntime.SetMarshalMemberBuilder(JniRuntime.CreationOptions): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'System.Reflection.Assembly.GetType(String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2026: Java.Interop.JniRuntime.SetMarshalMemberBuilder(JniRuntime.CreationOptions): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
ILLink warning IL2067: Java.Interop.JniRuntime.JniTypeManager.FindAndCallRegisterMethod(Type,JniNativeMethodRegistrationArguments): 'type' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods', 'DynamicallyAccessedMemberTypes.NonPublicMethods' in call to 'System.Reflection.RuntimeReflectionExtensions.GetRuntimeMethods(Type)'. The parameter 'marshalType' of method 'Java.Interop.JniRuntime.JniTypeManager.FindAndCallRegisterMethod(Type,JniNativeMethodRegistrationArguments)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2072: Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Reflection.MethodInfo System.Reflection.RuntimeReflectionExtensions::GetRuntimeMethod(System.Type,System.String,System.Type[])'. The return value of method 'System.Type.GetNestedType(String,BindingFlags)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.NonPublicNestedTypes' in call to 'System.Type.GetNestedType(String,BindingFlags)'. The parameter 'type' of method 'Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Java.Interop.JniRuntime.JniValueManager.GetActivationConstructor(Type): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructors(BindingFlags)'. The parameter 'type' of method 'Java.Interop.JniRuntime.JniValueManager.GetActivationConstructor(Type)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2060: Java.Interop.JniRuntime.JniValueManager.GetObjectArrayMarshaler(Type): Call to 'System.Reflection.MethodInfo System.Reflection.MethodInfo::MakeGenericMethod(System.Type[])' can not be statically analyzed. It's not possible to guarantee the availability of requirements of the generic method.
ILLink warning IL2072: Java.Interop.JniRuntime.JniValueManager.GetValueMarshaler(Type): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'Java.Interop.JniValueMarshalerAttribute.MarshalerType.get' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2072: Java.Interop.JniRuntime.JniValueManager.GetValueMarshaler(Type): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'Java.Interop.JniValueMarshalerAttribute.MarshalerType.get' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2057: Java.Interop.ManagedPeer.Construct(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2075: Java.Interop.ManagedPeer.Construct(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors' in call to 'System.Type.GetConstructor(Type[])'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2057: Java.Interop.ManagedPeer.GetParameterTypes(String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2057: Java.Interop.ManagedPeer.RegisterNativeMembers(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2075: Android.Runtime.AndroidTypeManager.CreateDynamicCallback(MethodInfo): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String)'. The return value of method 'System.Reflection.Assembly.GetType(String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2026: Android.Runtime.AndroidTypeManager.CreateDynamicCallback(MethodInfo): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
ILLink warning IL2057: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2072: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The return value of method 'System.Type System.Type::get_BaseType()' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2072: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods', 'DynamicallyAccessedMemberTypes.NonPublicMethods' in call to 'System.Type.GetMethods(BindingFlags)'. The parameter 'type' of method 'Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2067: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The parameter 'type' of method 'Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Java.Interop.JavaConvert.GetJniHandleConverterForType(Type): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String,BindingFlags)'. The parameter 't' of method 'Java.Interop.JavaConvert.GetJniHandleConverterForType(Type)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2055: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Call to 'System.Type.MakeGenericType(Type[])' can not be statically analyzed. It's not possible to guarantee the availability of requirements of the generic type.
ILLink warning IL2026: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
ILLink warning IL2026: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
ILLink warning IL2057: Android.Runtime.JNIEnv.RegisterJniNatives(IntPtr,Int32,IntPtr,IntPtr,Int32): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2026: Android.Runtime.ResourceIdManager.GetResourceTypeFromAssembly(Assembly): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
ILLink warning IL2075: Android.Runtime.ResourceIdManager.UpdateIdValues(): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String)'. The return value of method 'Android.Runtime.ResourceIdManager.GetResourceTypeFromAssembly(Assembly)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructor(BindingFlags,Binder,Type[],ParameterModifier[])'. The parameter 'type' of method 'Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2070: Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructor(BindingFlags,Binder,Type[],ParameterModifier[])'. The parameter 'type' of method 'Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
ILLink warning IL2057: Java.Interop.TypeManager.GetParameterTypes(String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2057: Java.Interop.TypeManager.n_Activate(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
ILLink warning IL2075: Java.Interop.TypeManager.n_Activate(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors' in call to 'System.Type.GetConstructor(Type[])'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.

Most of these are in https://github.com/xamarin/java.interop

jonathanpeppers added a commit to jonathanpeppers/xamarin-android that referenced this issue Apr 27, 2021
@jonathanpeppers
[One .NET] clean up default ILLink MSBuild properties
de7b865 
Context: dotnet#5856

In .NET 6 Preview 4, we can adjust some of our defaults for ILLink:

This can be completely removed, it is the default now:

    <TrimMode Condition=" '$(PublishTrimmed)' == 'true' and '$(TrimMode)' == '' ">link</TrimMode>

There is a new feature that has the same behavior as
`AndroidLinkMode=full`:

    <TrimmerDefaultAction Condition=" '$(TrimmerDefaultAction)' == '' and '$(AndroidLinkMode)' == 'Full' ">link</TrimmerDefaultAction>

This allows us to remove where we were manually setting
`%(TrimMode)=link` on the `@(ResolvedFileToPublish)` item group.

In a future PR, we should add an additional default to emit warning
for `TrimmerDefaultAction=link` or `AndroidLinkMode=Full`:

    <SuppressTrimAnalysisWarnings Condition=" '$(SuppressTrimAnalysisWarnings)' == '' and '$(TrimmerDefaultAction)' != 'link' ">true</SuppressTrimAnalysisWarnings>

I don't think we should enable this yet, because it causes warnings in
`Mono.Android.dll` and `Java.Interop.dll`, so this won't close dotnet#5856.

If you also set `TrimmerSingleWarn=false`, we can see several warnings
we will eventually need to address:

    ILLink warning IL2072: Java.Interop.JniRuntime.SetMarshalMemberBuilder(JniRuntime.CreationOptions): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'System.Reflection.Assembly.GetType(String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2026: Java.Interop.JniRuntime.SetMarshalMemberBuilder(JniRuntime.CreationOptions): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
    ILLink warning IL2067: Java.Interop.JniRuntime.JniTypeManager.FindAndCallRegisterMethod(Type,JniNativeMethodRegistrationArguments): 'type' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods', 'DynamicallyAccessedMemberTypes.NonPublicMethods' in call to 'System.Reflection.RuntimeReflectionExtensions.GetRuntimeMethods(Type)'. The parameter 'marshalType' of method 'Java.Interop.JniRuntime.JniTypeManager.FindAndCallRegisterMethod(Type,JniNativeMethodRegistrationArguments)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2072: Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Reflection.MethodInfo System.Reflection.RuntimeReflectionExtensions::GetRuntimeMethod(System.Type,System.String,System.Type[])'. The return value of method 'System.Type.GetNestedType(String,BindingFlags)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.NonPublicNestedTypes' in call to 'System.Type.GetNestedType(String,BindingFlags)'. The parameter 'type' of method 'Java.Interop.JniRuntime.JniTypeManager.TryLoadJniMarshalMethods(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Java.Interop.JniRuntime.JniValueManager.GetActivationConstructor(Type): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructors(BindingFlags)'. The parameter 'type' of method 'Java.Interop.JniRuntime.JniValueManager.GetActivationConstructor(Type)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2060: Java.Interop.JniRuntime.JniValueManager.GetObjectArrayMarshaler(Type): Call to 'System.Reflection.MethodInfo System.Reflection.MethodInfo::MakeGenericMethod(System.Type[])' can not be statically analyzed. It's not possible to guarantee the availability of requirements of the generic method.
    ILLink warning IL2072: Java.Interop.JniRuntime.JniValueManager.GetValueMarshaler(Type): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'Java.Interop.JniValueMarshalerAttribute.MarshalerType.get' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2072: Java.Interop.JniRuntime.JniValueManager.GetValueMarshaler(Type): '#0' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicParameterlessConstructor' in call to 'System.Object System.Activator::CreateInstance(System.Type)'. The return value of method 'Java.Interop.JniValueMarshalerAttribute.MarshalerType.get' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2057: Java.Interop.ManagedPeer.Construct(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2075: Java.Interop.ManagedPeer.Construct(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors' in call to 'System.Type.GetConstructor(Type[])'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2057: Java.Interop.ManagedPeer.GetParameterTypes(String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2057: Java.Interop.ManagedPeer.RegisterNativeMembers(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2075: Android.Runtime.AndroidTypeManager.CreateDynamicCallback(MethodInfo): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String)'. The return value of method 'System.Reflection.Assembly.GetType(String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2026: Android.Runtime.AndroidTypeManager.CreateDynamicCallback(MethodInfo): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
    ILLink warning IL2057: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2072: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The return value of method 'System.Type System.Type::get_BaseType()' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2072: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods', 'DynamicallyAccessedMemberTypes.NonPublicMethods' in call to 'System.Type.GetMethods(BindingFlags)'. The parameter 'type' of method 'Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2067: Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String): 'target' argument does not satisfy 'All' in call to 'System.Delegate.CreateDelegate(Type,Type,String)'. The parameter 'type' of method 'Android.Runtime.AndroidTypeManager.RegisterNativeMembers(JniType,Type,String)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Java.Interop.JavaConvert.GetJniHandleConverterForType(Type): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String,BindingFlags)'. The parameter 't' of method 'Java.Interop.JavaConvert.GetJniHandleConverterForType(Type)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2055: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Call to 'System.Type.MakeGenericType(Type[])' can not be statically analyzed. It's not possible to guarantee the availability of requirements of the generic type.
    ILLink warning IL2026: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
    ILLink warning IL2026: Java.Interop.JavaObjectExtensions.GetHelperType(Type,String): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
    ILLink warning IL2057: Android.Runtime.JNIEnv.RegisterJniNatives(IntPtr,Int32,IntPtr,IntPtr,Int32): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2026: Android.Runtime.ResourceIdManager.GetResourceTypeFromAssembly(Assembly): Using method 'System.Reflection.Assembly.GetType(String)' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Types might be removed.
    ILLink warning IL2075: Android.Runtime.ResourceIdManager.UpdateIdValues(): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicMethods' in call to 'System.Type.GetMethod(String)'. The return value of method 'Android.Runtime.ResourceIdManager.GetResourceTypeFromAssembly(Assembly)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructor(BindingFlags,Binder,Type[],ParameterModifier[])'. The parameter 'type' of method 'Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2070: Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors', 'DynamicallyAccessedMemberTypes.NonPublicConstructors' in call to 'System.Type.GetConstructor(BindingFlags,Binder,Type[],ParameterModifier[])'. The parameter 'type' of method 'Java.Interop.TypeManager.CreateProxy(Type,IntPtr,JniHandleOwnership)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.
    ILLink warning IL2057: Java.Interop.TypeManager.GetParameterTypes(String): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2057: Java.Interop.TypeManager.n_Activate(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): Unrecognized value passed to the parameter 'typeName' of method 'System.Type.GetType(String,Boolean)'. It's not possible to guarantee the availability of the target type.
    ILLink warning IL2075: Java.Interop.TypeManager.n_Activate(IntPtr,IntPtr,IntPtr,IntPtr,IntPtr,IntPtr): 'this' argument does not satisfy 'DynamicallyAccessedMemberTypes.PublicConstructors' in call to 'System.Type.GetConstructor(Type[])'. The return value of method 'System.Type.GetType(String,Boolean)' does not have matching annotations. The source value must declare at least the same requirements as those declared on the target location it is assigned to.

I looked into fixing a few, and we will need to compile
`Java.Interop.dll` against at least .NET 5 to solve these issues. We
are getting close to being able to do that.

Also tracked by: dotnet#5652
@jonathanpeppers jonathanpeppers mentioned this issue Apr 27, 2021
Merged
@jonpryor jonpryor mentioned this issue Apr 28, 2021
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@ghost ghost locked as resolved and limited conversation to collaborators Jun 3, 2022
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