From c6b9270d047e07718586aca4825fe958c1850345 Mon Sep 17 00:00:00 2001
From: Lubos Lunak <l.lunak@suse.cz>
Date: Wed, 27 Nov 2013 21:14:43 +0000
Subject: strip UTF-8 BOM in -frewrite-includes (PR#15664)

llvm-svn: 195877
---
 clang/lib/Rewrite/Frontend/InclusionRewriter.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'clang/lib/Rewrite/Frontend/InclusionRewriter.cpp')

diff --git a/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp b/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp
index bd4250adaad..71ceb5f0b6a 100644
--- a/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp
+++ b/clang/lib/Rewrite/Frontend/InclusionRewriter.cpp
@@ -367,6 +367,11 @@ bool InclusionRewriter::Process(FileID FileId,
   unsigned NextToWrite = 0;
   int Line = 1; // The current input file line number.
 
+  // Ignore UTF-8 BOM, otherwise it'd end up somewhere else than the start
+  // of the resulting file.
+  if (FromFile.getBuffer().startswith("\xEF\xBB\xBF"))
+    NextToWrite = 3;
+
   Token RawToken;
   RawLex.LexFromRawLexer(RawToken);
 
-- 
cgit v1.2.3