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Bug in IsEq

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bloeys
2024-07-21 23:40:06 +04:00
parent 932c843282
commit a666d180ec
1 changed files with 7 additions and 4 deletions
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11
nset.go
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@ -289,10 +289,13 @@ func (n *NSet[T]) IsEq(otherSet *NSet[T]) bool {
b1 := &n.Buckets[i]
b2 := &otherSet.Buckets[i]
bucketsEqual := (b1.StorageUnitCount == 0 && b2.StorageUnitCount == 0) || bytes.Equal(
unsafe.Slice((*byte)(unsafe.Pointer(&b1.Data[0])), len(b1.Data)*int(unsafe.Sizeof(b1.Data[0]))),
unsafe.Slice((*byte)(unsafe.Pointer(&b2.Data[0])), len(b2.Data)*int(unsafe.Sizeof(b2.Data[0]))),
)
// The .Data[0] will panic if either unit count is zero, so these checks
// both avoid that panic and provide an early exit
bucketsEqual := (b1.StorageUnitCount == 0 && b2.StorageUnitCount == 0) ||
(b1.StorageUnitCount == b2.StorageUnitCount && bytes.Equal(
unsafe.Slice((*byte)(unsafe.Pointer(&b1.Data[0])), len(b1.Data)*int(unsafe.Sizeof(b1.Data[0]))),
unsafe.Slice((*byte)(unsafe.Pointer(&b2.Data[0])), len(b2.Data)*int(unsafe.Sizeof(b2.Data[0]))),
))
if !bucketsEqual {
return false