include the null at the end of a memorybuffer as part of the buffer.

This allows tblgen to handle include "foo.td" when the quote is exactly
the last character in a file.  rdar://6695728


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67232 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 1 deletions

diff --git a/utils/TableGen/TGSourceMgr.cpp b/utils/TableGen/TGSourceMgr.cpp
index 9c39230def..e4d1c40dc6 100644
--- a/utils/TableGen/TGSourceMgr.cpp
+++ b/utils/TableGen/TGSourceMgr.cpp
@@ -28,7 +28,9 @@ TGSourceMgr::~TGSourceMgr() {
 int TGSourceMgr::FindBufferContainingLoc(TGLoc Loc) const {
   for (unsigned i = 0, e = Buffers.size(); i != e; ++i)
     if (Loc.getPointer() >= Buffers[i].Buffer->getBufferStart() &&
-        Loc.getPointer() <  Buffers[i].Buffer->getBufferEnd())
+        // Use <= here so that a pointer to the null at the end of the buffer
+        // is included as part of the buffer.
+        Loc.getPointer() <= Buffers[i].Buffer->getBufferEnd())
       return i;
   return -1;
 }