Take into account that there may be a BOM at the beginning of the file,
when computing the size of the precompiled preamble.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166659 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index 6ac3f3f..fa911fe 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -513,10 +513,13 @@
// "fake" file source location at offset 1 so that the lexer will track our
// position within the file.
const unsigned StartOffset = 1;
- SourceLocation StartLoc = SourceLocation::getFromRawEncoding(StartOffset);
- Lexer TheLexer(StartLoc, LangOpts, Buffer->getBufferStart(),
+ SourceLocation FileLoc = SourceLocation::getFromRawEncoding(StartOffset);
+ Lexer TheLexer(FileLoc, LangOpts, Buffer->getBufferStart(),
Buffer->getBufferStart(), Buffer->getBufferEnd());
-
+
+ // StartLoc will differ from FileLoc if there is a BOM that was skipped.
+ SourceLocation StartLoc = TheLexer.getSourceLocation();
+
bool InPreprocessorDirective = false;
Token TheTok;
Token IfStartTok;