From e62d682a27ce9addf40223430fe8228a793e889f Mon Sep 17 00:00:00 2001
From: Argyrios Kyrtzidis <akyrtzi@gmail.com>
Date: Sat, 18 Oct 2014 06:19:36 +0000
Subject: [libclang] Allow code-completion when pointing at the end-of-file.

llvm-svn: 220135
---
 clang/lib/Lex/Preprocessor.cpp | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

(limited to 'clang/lib/Lex')

diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index 400cdb469d5..c15a6ab956a 100644
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -384,21 +384,20 @@ bool Preprocessor::SetCodeCompletionPoint(const FileEntry *File,
   }
 
   Position += CompleteColumn - 1;
-
-  // Insert '\0' at the code-completion point.
-  if (Position < Buffer->getBufferEnd()) {
-    CodeCompletionFile = File;
-    CodeCompletionOffset = Position - Buffer->getBufferStart();
-
-    std::unique_ptr<MemoryBuffer> NewBuffer =
-        MemoryBuffer::getNewUninitMemBuffer(Buffer->getBufferSize() + 1,
-                                            Buffer->getBufferIdentifier());
-    char *NewBuf = const_cast<char*>(NewBuffer->getBufferStart());
-    char *NewPos = std::copy(Buffer->getBufferStart(), Position, NewBuf);
-    *NewPos = '\0';
-    std::copy(Position, Buffer->getBufferEnd(), NewPos+1);
-    SourceMgr.overrideFileContents(File, std::move(NewBuffer));
-  }
+  if (Position > Buffer->getBufferEnd())
+    Position = Buffer->getBufferEnd();
+
+  CodeCompletionFile = File;
+  CodeCompletionOffset = Position - Buffer->getBufferStart();
+
+  std::unique_ptr<MemoryBuffer> NewBuffer =
+      MemoryBuffer::getNewUninitMemBuffer(Buffer->getBufferSize() + 1,
+                                          Buffer->getBufferIdentifier());
+  char *NewBuf = const_cast<char*>(NewBuffer->getBufferStart());
+  char *NewPos = std::copy(Buffer->getBufferStart(), Position, NewBuf);
+  *NewPos = '\0';
+  std::copy(Position, Buffer->getBufferEnd(), NewPos+1);
+  SourceMgr.overrideFileContents(File, std::move(NewBuffer));
 
   return false;
 }
-- 
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