[cfe-commits] [PATCH] Validate C99 and C++03's set of UCNs

[Jordan Rose]

Hi rsmith,

C99 and C++03 are both more restrictive about which UCNs can be used in identifiers. This patch adds tables to check all of the restrictions, along with compatibility warnings under -Wc++11-compat, -Wc++98-compat, and -Wc99-compat.

http://llvm-reviews.chandlerc.com/D327

Files:
  include/clang/Basic/DiagnosticGroups.td
  include/clang/Basic/DiagnosticLexKinds.td
  lib/Lex/CharSets.inc
  lib/Lex/Lexer.cpp
  test/Preprocessor/ucn-allowed-chars.c
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