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7197906: BlockOffsetArray::power_to_cards_back() needs to handle > 32 bit shifts

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Reviewed-by: brutisso, johnc, ysr
This commit is contained in:
Hal Mo 2012-09-13 21:20:26 +02:00 • committed by Bengt Rutisson
parent c188598ddd
commit 18582cee62
3 changed files with 3 additions and 3 deletions
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2
hotspot/src/share/vm/gc_implementation/g1/concurrentMark.cpp
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@ -110,7 +110,7 @@ int CMBitMapRO::heapWordDiffToOffsetDiff(size_t diff) const {
#ifndef PRODUCT
bool CMBitMapRO::covers(ReservedSpace rs) const {
// assert(_bm.map() == _virtual_space.low(), "map inconsistency");
assert(((size_t)_bm.size() * (size_t)(1 << _shifter)) == _bmWordSize,
assert(((size_t)_bm.size() * ((size_t)1 << _shifter)) == _bmWordSize,
"size inconsistency");
return _bmStartWord == (HeapWord*)(rs.base()) &&
_bmWordSize == rs.size()>>LogHeapWordSize;