[cfe-commits] r57394 - /cfe/trunk/lib/Lex/Lexer.cpp

[Chris Lattner]

Author: lattner
Date: Sat Oct 11 20:23:27 2008
New Revision: 57394

URL: http://llvm.org/viewvc/llvm-project?rev=57394&view=rev
Log:
add a comment.

Modified:
    cfe/trunk/lib/Lex/Lexer.cpp

Modified: cfe/trunk/lib/Lex/Lexer.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/Lexer.cpp?rev=57394&r1=57393&r2=57394&view=diff

==============================================================================
--- cfe/trunk/lib/Lex/Lexer.cpp (original)
+++ cfe/trunk/lib/Lex/Lexer.cpp Sat Oct 11 20:23:27 2008
@@ -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;