User-defined literals: reject string and character UDLs in all places where the

grammar requires a string-literal and not a user-defined-string-literal. The
two constructs are still represented by the same TokenKind, in order to prevent
a combinatorial explosion of different kinds of token. A flag on Token tracks
whether a ud-suffix is present, in order to prevent clients from needing to look
at the token's spelling.

llvm-svn: 152098

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Lex/Lexer.cpp b/clang/lib/Lex/Lexer.cpp
index 2b24d1cc75e..a7fba8019d3 100644
--- a/clang/lib/Lex/Lexer.cpp
+++ b/clang/lib/Lex/Lexer.cpp
@@ -1582,6 +1582,7 @@ const char *Lexer::LexUDSuffix(Token &Result, const char *CurPtr) {
   unsigned Size;
   char C = getCharAndSize(CurPtr, Size);
   if (isIdentifierHead(C)) {
+    Result.setFlag(Token::HasUDSuffix);
     do {
       CurPtr = ConsumeChar(CurPtr, Size, Result);
       C = getCharAndSize(CurPtr, Size);