From: Chris Lattner <sabre@nondot.org>
Date: Sun, 12 Oct 2008 01:23:27 +0000 (+0000)
Subject: add a comment.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8527b71b1944b155a2bd60ec364d700299bc3ff7;p=clang

add a comment.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57394 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index e930f3def2..63bf58a12c 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -113,6 +113,8 @@ Lexer::Lexer(SourceLocation fileloc, const LangOptions &features,
   Is_PragmaLexer = false;
   InitCharacterInfo();
   
+  // If a MemoryBuffer was specified, use its start as BufferStart. This affects
+  // the source location objects produced by this lexer.
   BufferStart = FromFile ? FromFile->getBufferStart() : BufStart;
   BufferPtr = BufStart;
   BufferEnd = BufEnd;