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prevector::swap: fix (unreached) data corruption

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swap was using an incorrect condition to determine when to apply an optimization
(not swapping the full direct[] when swapping two indirect prevectors).

Rather than correct the optimization I'm removing it for simplicity. Removing
this optimization minutely improves performance in the typical (currently only)
usage of member swap(), which is swapping with a freshly value-initialized
object.
This commit is contained in:
Kaz Wesley 2016-04-14 09:26:32 -07:00
parent 4ed41a2b61
commit a7af72a697
1 changed files with 1 additions and 6 deletions
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7
src/prevector.h
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@ -412,12 +412,7 @@ public:
} }
void swap(prevector<N, T, Size, Diff>& other) { void swap(prevector<N, T, Size, Diff>& other) {
if (_size & other._size & 1) { std::swap(_union, other._union);
std::swap(_union.capacity, other._union.capacity);
std::swap(_union.indirect, other._union.indirect);
} else {
std::swap(_union, other._union);
}
std::swap(_size, other._size); std::swap(_size, other._size);
} }