10-219r1 To: J3 From: Nick Maclaren, Bill Long Subject: Interop TR: C integer constants (5.2.5 Macros) Date: 2010 October 11 Reference: 10-165r2.pdf Standard C uses the term 'integer constant' with at least three different meanings, and (usually) specifies which one is meant. The TR needs to do the same. The best analogy is in C99 5.2.4.2.1 . Edits to 10-165r2: [10:22] "integer constant expression" should be replaced by "integer constant expression suitable for use in #if preprocessing directives."