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[ox/ptrarith] Fix NodeBuffer::compact to correclty update dest.prev

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This commit is contained in:
Gary Talent
2019-07-18 20:31:51 -05:00
parent 69f918664d
commit d55089b582
1 changed files with 8 additions and 4 deletions
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12
deps/ox/src/ox/ptrarith/nodebuffer.hpp vendored
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@@ -278,6 +278,7 @@ typename NodeBuffer<size_t, Item>::ItemPtr NodeBuffer<size_t, Item>::malloc(size
m_header.bytesUsed += out.size();
} else {
oxTrace("ox::ptrarith::NodeBuffer::malloc::fail") << "Unknown";
return nullptr;
}
oxTrace("ox::ptrarith::NodeBuffer::malloc") << "Offset:" << out.offset();
return out;
@@ -293,8 +294,8 @@ Error NodeBuffer<size_t, Item>::free(ItemPtr item) {
auto next = this->next(item);
if (prev.valid() && next.valid()) {
if (next != item) {
prev->next = next.offset();
next->prev = prev.offset();
prev->next = next;
next->prev = prev;
if (item.offset() == m_header.firstItem) {
m_header.firstItem = next;
}
@@ -319,8 +320,11 @@ Error NodeBuffer<size_t, Item>::free(ItemPtr item) {
template<typename size_t, typename Item>
Error NodeBuffer<size_t, Item>::setSize(size_t size) {
oxTrace("ox::ptrarith::NodeBuffer::setSize") << size;
auto last = lastItem();
if ((last.valid() && last.end() >= size) || size < sizeof(m_header)) {
auto end = last.valid() ? last.end() : sizeof(m_header);
oxTrace("ox::ptrarith::NodeBuffer::setSize") << "end:" << end;
if (end > size) {
return OxError(1);
} else {
m_header.size = size;
@@ -358,7 +362,7 @@ void NodeBuffer<size_t, Item>::compact(F cb) {
ox_memcpy(dest, src, src.size());
cb(src, dest);
// update surrounding nodes
auto prev = ptr(dest->next);
auto prev = ptr(dest->prev);
if (prev.valid()) {
prev->next = dest;
}