commit 88ad2ac17a39992aee094f5221c21d3d3e1b79fe
author Chris Lattner <sabre@nondot.org> Sun Oct 12 01:23:27 2008 +0000
committer Chris Lattner <sabre@nondot.org> Sun Oct 12 01:23:27 2008 +0000
tree 70b7d2cde08aa80090d417b4a3bb921c38f9b967
parent 0b5892ecb01b13c12d53058f305a58eced928939

add a comment.


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

lib/Lex/Lexer.cpp

diff --git a/lib/Lex/Lexer.cpp b/lib/Lex/Lexer.cpp
index e930f3d..63bf58a 100644
--- a/lib/Lex/Lexer.cpp
+++ b/lib/Lex/Lexer.cpp
@@ -113,6 +113,8 @@
   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;