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Div protection

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This commit is contained in:
Brian Fiete 2020-06-10 05:44:38 -07:00
parent a955361f6a
commit 4cf6af53bd
1 changed files with 10 additions and 6 deletions
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16
BeefRT/dbg/gc_raw.cpp
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@ -136,11 +136,14 @@ void BFGC::RawMarkSpan(tcmalloc_raw::Span* span, int expectedStartPage)
// It's possible we can overestimate elemCount, particularly for large allocations. This doesn't cause a problem
// because we can safely mark on complete random memory -- pointer values are always validated before being followed
intptr elemStride = BF_ALIGN(rawAllocData->mType->mSize, rawAllocData->mType->mAlign);
intptr dataSize = elementSize - extraDataSize;
intptr elemCount = dataSize / elemStride;
for (intptr elemIdx = 0; elemIdx < elemCount; elemIdx++)
{
(((MarkTarget*)((uint8*)spanPtr + elemIdx * elemStride))->*markFunc)();
if (elemStride > 0)
{
intptr dataSize = elementSize - extraDataSize;
intptr elemCount = dataSize / elemStride;
for (intptr elemIdx = 0; elemIdx < elemCount; elemIdx++)
{
(((MarkTarget*)((uint8*)spanPtr + elemIdx * elemStride))->*markFunc)();
}
}
}
}
@ -284,7 +287,8 @@ void BFGC::RawReportHandleSpan(tcmalloc_raw::Span* span, int expectedStartPage,
typeSize = rawAllocData->mType->mSize;
else
typeSize = ((bf::System::Type_NOFLAGS*)rawAllocData->mType)->mSize;
rawLeakInfo.mDataCount = (elementSize - extraDataSize) / typeSize;
if (typeSize > 0)
rawLeakInfo.mDataCount = (elementSize - extraDataSize) / typeSize;
}
else
rawLeakInfo.mDataCount = 1;