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Proper fix for the off-by-one bug in clear_unused_bits(). 

llvm-svn: 34328
This commit is contained in:
Evan Cheng 2007-02-15 21:38:15 +00:00
parent 9a3e3222e9
commit 8307918cc8
1 changed files with 3 additions and 5 deletions
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8
llvm/include/llvm/ADT/BitVector.h
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@ -290,12 +290,10 @@ private:
// Clear the unused top bits in the high word.
void clear_unused_bits() {
if (Size) {
unsigned ExtraBits = Size % BITS_PER_WORD;
unsigned ExtraBits = Size % BITS_PER_WORD;
if (ExtraBits) {
unsigned index = Size / BITS_PER_WORD;
if (Size % BITS_PER_WORD == 0)
index--;
Bits[index] &= ~(~0 << ExtraBits);
Bits[index] &= ~(~0L << ExtraBits);
}
}