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Unified Diff: src/spaces-inl.h

Issue 7779037: Fix bug in Page::GetRegionMaskForSpan. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 9 years, 3 months ago
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Index: src/spaces-inl.h
===================================================================
--- src/spaces-inl.h (revision 9090)
+++ src/spaces-inl.h (working copy)
@@ -155,7 +155,8 @@
uint32_t Page::GetRegionMaskForSpan(Address start, int length_in_bytes) {
uint32_t result = 0;
- if (length_in_bytes >= kPageSize) {
+ static const intptr_t kRegionMask = (1 << kRegionSizeLog2) - 1;
+ if (length_in_bytes + (OffsetFrom(start) & kRegionMask) >= kPageSize) {
result = kAllRegionsDirtyMarks;
} else if (length_in_bytes > 0) {
int start_region = GetRegionNumberForAddress(start);
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