ResXFileCodeGenerator creates code which triggers warnings (CS1570)

[cptjazz]

Version Used:
VS2017 (15.6.2)

Steps to Reproduce:

1. Add a resx Resource File to your project
2. Define a key "Test" with the following multiline value:
   MyTest
   /asdf
3. In your project settings activate "Treat warnings as errors". Also activate "XML documentation file".
4. Compile

Expected Behavior:

No warnings (that are treated as errors) for automatically generated code.

The ResXFileCodeGenerator should have escaped the slash in the XML comment with /. It already escapes characters like < and >.

Or: it should have inserted a space after the leading /// that start the XML comment.

Actual Behavior:

The compiler generates warnings (that are treated as errors) for the automatically generated property.

Error CS1570 XML comment has badly formed XML -- 'summary'
Error CS1570 XML comment has badly formed XML -- '{0}'

The generated code looks like:

/// <summary>
///   Looks up a localized string similar to MyTest
////asdf.
/// </summary>
internal static string Test {
    get {
        return ResourceManager.GetString("Test", resourceCulture);
    }
}

The problem here is the slash ("/") in the second line of the resource text.

Since all projects in my team enforce "treat warnings as errors" this effectively leads to a non-compiling project.