Don't expand tabs when computing the offset from the code-completion column

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90881 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 8 deletions

diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index 49a25f2574..0c1b858c45 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -221,16 +221,10 @@ bool Preprocessor::SetCodeCompletionPoint(const FileEntry *File,
     }
   }
   
-  for (unsigned Column = 1; Column < TruncateAtColumn; ++Column, ++Position) {
-    if (!*Position)
-      break;
-    
-    if (*Position == '\t')
-      Column += 7;
-  }
+  Position += TruncateAtColumn - 1;
   
   // Truncate the buffer.
-  if (Position != Buffer->getBufferEnd()) {
+  if (Position < Buffer->getBufferEnd()) {
     MemoryBuffer *TruncatedBuffer 
       = MemoryBuffer::getMemBufferCopy(Buffer->getBufferStart(), Position, 
                                        Buffer->getBufferIdentifier());