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Added two bounds checks to the BitVector class to detect

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out-of-bounds bit accesses.  The checks are only performed
in a Debug build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44815 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek 2007-12-10 22:28:35 +00:00
parent 555c729a2f
commit 9324665a78
1 changed files with 4 additions and 0 deletions
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4
include/llvm/ADT/BitVector.h
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@ -245,10 +245,12 @@ 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 +377,8 @@ private:
// Destroy the old bits.
delete[] Bits;
Bits = NewBits;
clear_unused_bits();
}
void init_words(BitWord *B, unsigned NumWords, bool t) {