Fix subtle bug in Preprocessor::AdvanceToTokenCharacter(): use '+=' instead of '='.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94830 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index 5689baaac652f95428dda05086b20af4bb80927c..df0e702ab447b7e6e9edbe4835e79196d0628c58 100644 (file)
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -424,7 +424,7 @@ SourceLocation Preprocessor::AdvanceToTokenCharacter(SourceLocation TokStart,
   // advanced by 3 should return the location of b, not of \\.  One compounding
   // detail of this is that the escape may be made by a trigraph.
   if (!Lexer::isObviouslySimpleCharacter(*TokPtr))
-    PhysOffset = Lexer::SkipEscapedNewLines(TokPtr)-TokPtr;
+    PhysOffset += Lexer::SkipEscapedNewLines(TokPtr)-TokPtr;
 
   return TokStart.getFileLocWithOffset(PhysOffset);
 }