X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FADT%2FBitVector.h;h=a3a8920186468ebf5f48044752fa0dde6ad4d4bd;hb=fc82fabe00b0b820e3c0d7fc9e289bace0295f11;hp=927cfa9f7869ab83645e78d1ed85cc8c4a1eb95b;hpb=efd4a5144b03f61ebfd53d0245176f95e1170fb8;p=oota-llvm.git

diff --git a/include/llvm/ADT/BitVector.h b/include/llvm/ADT/BitVector.h
index 927cfa9f786..a3a89201864 100644
--- a/include/llvm/ADT/BitVector.h
+++ b/include/llvm/ADT/BitVector.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Evan Cheng and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -16,8 +16,9 @@
 
 #include "llvm/Support/MathExtras.h"
 #include <algorithm>
-#include <cstdlib>
 #include <cassert>
+#include <cstdlib>
+#include <cstring>
 
 namespace llvm {
 
@@ -245,10 +246,12 @@ public:
 
   // Indexing.
   reference operator[](unsigned Idx) {
+    assert (Idx < Size && "Out-of-bounds Bit access.");
     return reference(*this, Idx);
   }
 
   bool operator[](unsigned Idx) const {
+    assert (Idx < Size && "Out-of-bounds Bit access.");   
     BitWord Mask = 1L << (Idx % BITWORD_SIZE);
     return (Bits[Idx / BITWORD_SIZE] & Mask) != 0;
   }
@@ -375,6 +378,8 @@ private:
     // Destroy the old bits.
     delete[] Bits;
     Bits = NewBits;
+    
+    clear_unused_bits();
   }
 
   void init_words(BitWord *B, unsigned NumWords, bool t) {