NET-2382 Fix AD0001: Analyzer 'SonarAnalyzer.CSharp.Rules.VariableShadowsField' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. #9758
Description
Description
Using the new C# 14 extension members, SonarAnalyzer throws an exception.
Only see the exception in Azure pipelines.
Reproducer
extension<TEnum>(TEnum @enum)
where TEnum : struct, Enum
{
public EnumWrapper<TEnum> Wrap() =>
new(@enum);
public string GetDisplayName()
{
MemberInfo? memberInfo = @enum.GetType().GetMember(@enum.ToString()).FirstOrDefault();
if (memberInfo is not null)
{
DisplayAttribute? displayAttribute = memberInfo.GetCustomAttribute<DisplayAttribute>();
if (displayAttribute is not null && !string.IsNullOrEmpty(displayAttribute.GetName()))
{
return displayAttribute.GetName()!;
}
}
return @enum.ToString();
}
public IEnumerable<TEnum> GetFlags() =>
GetValuesExceptDefault<TEnum>().Where(flag => @enum.HasFlag(flag));
public int ToInt() =>
Convert.ToInt32(@enum, CultureInfo.InvariantCulture);
}
extension<TEnum>(TEnum)
where TEnum : struct, Enum
{
public static IEnumerable<EnumWrapper<TEnum>> GetWrappedValues() =>
Enum.GetValues<TEnum>().Wrap();
public static IEnumerable<TEnum> GetValuesExceptDefault() =>
Enum.GetValues<TEnum>().Where(e => !Equals(e, default(TEnum)));
}
extension<TEnum>(IEnumerable<TEnum> enums)
where TEnum : struct, Enum
{
public IEnumerable<EnumWrapper<TEnum>> Wrap() =>
enums.Select(Wrap);
public TEnum CombineFlags()
{
var result = 0;
foreach (TEnum enumValue in enums)
result |= Convert.ToInt32(enumValue, CultureInfo.InvariantCulture);
return (TEnum)Enum.ToObject(typeof(TEnum), result);
}
}Product and Version
NuGet version 10.15.0.120848