Optional arguments regression

[mmusu3]

Input code

class OptionalArgumentTest
{
    static void Test()
    {
        Test2();
        Test3();
        Test4();
    }

    static void Test2(int a = 0) { }
    static void Test3(int a = 0, int? b = null) { }
    static void Test4(int? b = null, int a = 0) { }
}

Erroneous output

internal class OptionalArgumentTest
{
    private static void Test()
    {
        Test2();
        Test3(0, null);
        Test4(null);
    }

    private static void Test2(int a = 0)
    {
    }

    private static void Test3(int a = 0, int? b = null)
    {
    }

    private static void Test4(int? b = null, int a = 0)
    {
    }
}

The output compiles but the nullable types do not respect the OptionalArguments decompiler setting. Other parameter types still work. This is a regression, the version I used previously was 90946ae

Details

• Product in use: e.g. ILSpy 9.0 VS extension