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Bounds-check APInt's operator[].

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119708 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-11-18 17:14:56 +00:00
parent 409d64a764
commit 078d967e0a
1 changed files with 1 additions and 0 deletions
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lib/Support/APInt.cpp
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@ -483,6 +483,7 @@ APInt APInt::operator-(const APInt& RHS) const {
}
bool APInt::operator[](unsigned bitPosition) const {
assert(bitPosition < getBitWidth() && "Bit position out of bounds!");
return (maskBit(bitPosition) &
(isSingleWord() ? VAL : pVal[whichWord(bitPosition)])) != 0;
}