When copying whitespace flags from the token naming a macro argument onto the

first token of the expansion, don't forget to copy the "is at the start of a
line" token (which is always false, as newlines cannot appear within a macro
body); otherwise, stringizing the result can insert spurious whitespace.

llvm-svn: 257863

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Lex/TokenLexer.cpp b/clang/lib/Lex/TokenLexer.cpp
index c42966928e5..ed2b8cdabd1 100644
--- a/clang/lib/Lex/TokenLexer.cpp
+++ b/clang/lib/Lex/TokenLexer.cpp
@@ -305,6 +305,7 @@ void TokenLexer::ExpandFunctionArguments() {
         // identifier.
         ResultToks[FirstResult].setFlagValue(Token::LeadingSpace,
                                              NextTokGetsSpace);
+        ResultToks[FirstResult].setFlagValue(Token::StartOfLine, false);
         NextTokGetsSpace = false;
       }
       continue;