Fix warnings (#3031)

Src/Newtonsoft.Json.Tests/Newtonsoft.Json.Tests.csproj

@@ -192,5 +192,6 @@
     <AssemblyTitle>Json.NET Tests .NET Standard 1.0</AssemblyTitle>
     <ReferringTargetFrameworkForProjectReferences>.NETStandard,Version=v1.0</ReferringTargetFrameworkForProjectReferences>
     <DefineConstants>NETSTANDARD1_0;DNXCORE50;PORTABLE;HAVE_REGEX_TIMEOUTS;$(AdditionalConstants)</DefineConstants>
+    <NoWarn>$(NoWarn);NETSDK1023</NoWarn>
   </PropertyGroup>
 </Project>

Src/Newtonsoft.Json/JsonException.cs

@@ -76,10 +76,12 @@ namespace Newtonsoft.Json
         /// <param name="context">The <see cref="StreamingContext"/> that contains contextual information about the source or destination.</param>
         /// <exception cref="ArgumentNullException">The <paramref name="info"/> parameter is <c>null</c>.</exception>
         /// <exception cref="SerializationException">The class name is <c>null</c> or <see cref="Exception.HResult"/> is zero (0).</exception>
+#pragma warning disable SYSLIB0051
         public JsonException(SerializationInfo info, StreamingContext context)
             : base(info, context)
         {
         }
+#pragma warning restore SYSLIB0051
 #endif
 
         internal static JsonException Create(IJsonLineInfo lineInfo, string path, string message)

Src/Newtonsoft.Json/Linq/JContainer.cs

@@ -952,12 +952,12 @@ namespace Newtonsoft.Json.Linq
         }
 
 #if HAVE_COMPONENT_MODEL
-        string ITypedList.GetListName(PropertyDescriptor[] listAccessors)
+        string ITypedList.GetListName(PropertyDescriptor[]? listAccessors)
         {
             return string.Empty;
         }
 
-        PropertyDescriptorCollection ITypedList.GetItemProperties(PropertyDescriptor[] listAccessors)
+        PropertyDescriptorCollection ITypedList.GetItemProperties(PropertyDescriptor[]? listAccessors)
         {
 #if HAVE_APPCONTEXT
             if (!ComponentModelIsSupported)

Src/Newtonsoft.Json/Serialization/JsonFormatterConverter.cs

@@ -33,6 +33,7 @@ using Newtonsoft.Json.Linq;
 
 namespace Newtonsoft.Json.Serialization
 {
+#pragma warning disable SYSLIB0050
     [RequiresUnreferencedCode(MiscellaneousUtils.TrimWarning)]
     [RequiresDynamicCode(MiscellaneousUtils.AotWarning)]
     internal class JsonFormatterConverter : IFormatterConverter
@@ -155,6 +156,7 @@ namespace Newtonsoft.Json.Serialization
             return GetTokenValue<ulong>(value);
         }
     }
+#pragma warning restore SYSLIB0050
 }
 
 #endif

Src/Newtonsoft.Json/Serialization/JsonObjectContract.cs

@@ -189,6 +189,7 @@ namespace Newtonsoft.Json.Serialization
 #endif
         internal object GetUninitializedObject()
         {
+#pragma warning disable SYSLIB0050
             // we should never get here if the environment is not fully trusted, check just in case
             if (!JsonTypeReflector.FullyTrusted)
             {
@@ -196,6 +197,7 @@ namespace Newtonsoft.Json.Serialization
             }
 
             return FormatterServices.GetUninitializedObject(NonNullableUnderlyingType);
+#pragma warning restore SYSLIB0050
         }
 #endif
     }

Src/Newtonsoft.Json/Serialization/JsonSerializerInternalReader.cs

@@ -1758,6 +1758,7 @@ namespace Newtonsoft.Json.Serialization
         [RequiresDynamicCode(MiscellaneousUtils.AotWarning)]
         private object CreateISerializable(JsonReader reader, JsonISerializableContract contract, JsonProperty? member, string? id)
         {
+#pragma warning disable SYSLIB0050
             Type objectType = contract.UnderlyingType;
 
             if (!JsonTypeReflector.FullyTrusted)
@@ -1826,6 +1827,7 @@ namespace Newtonsoft.Json.Serialization
             OnDeserialized(reader, contract, createdObject);
 
             return createdObject;
+#pragma warning restore SYSLIB0050
         }
 
         [RequiresUnreferencedCode(MiscellaneousUtils.TrimWarning)]

Src/Newtonsoft.Json/Serialization/JsonSerializerInternalWriter.cs

@@ -888,6 +888,7 @@ namespace Newtonsoft.Json.Serialization
         [RequiresDynamicCode(MiscellaneousUtils.AotWarning)]
         private void SerializeISerializable(JsonWriter writer, ISerializable value, JsonISerializableContract contract, JsonProperty? member, JsonContainerContract? collectionContract, JsonProperty? containerProperty)
         {
+#pragma warning disable SYSLIB0050
             if (!JsonTypeReflector.FullyTrusted)
             {
                 string message = @"Type '{0}' implements ISerializable but cannot be serialized using the ISerializable interface because the current application is not fully trusted and ISerializable can expose secure data." + Environment.NewLine +
@@ -925,6 +926,7 @@ namespace Newtonsoft.Json.Serialization
 
             _serializeStack.RemoveAt(_serializeStack.Count - 1);
             OnSerialized(writer, contract, value);
+#pragma warning restore SYSLIB0050
         }
 #endif