13.21.3 Known Issues

The following are known issues with this release of SICStus. See Limitations in the Current Release for more information about missing or incomplete features in this release.

• The .NET interface to library(prologbeans) uses ‘J#’. The use of J# has several disadvantages, since J# is no longer actively developed by Microsoft.
  • Microsoft ‘mainstream support’ for J# has ended (but ‘extended support’ will be available from Microsoft until October 2017).
  • J# requires a separate runtime.
  • The .NET on-line documentation for the .NET PrologBeans module has various issues, including broken links, and Java-specific wording.

  Our plan is to re-implement the .NET support in C#. For more information about J#, see http://msdn.microsoft.com/en-US/vstudio/bb188593.

• SICStus Prolog does not verify that Prolog text is in Unicode NFC format.

  When reading terms, SICStus Prolog currently does not verify that the input text contains valid Unicode 5.0 characters in Normal Form C. See Syntax of Tokens as Character Strings.

  This is not a problem as long as the input is in the proper format but it will accept some input that may be rejected or interpreted differently in a future version of SICStus Prolog.