diff options
| -rw-r--r-- | internal/pkg/table/policy.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/internal/pkg/table/policy.go b/internal/pkg/table/policy.go index 44feebd6..6e97723c 100644 --- a/internal/pkg/table/policy.go +++ b/internal/pkg/table/policy.go @@ -370,6 +370,12 @@ func (lhs *PrefixSet) Append(arg DefinedSet) error { if !ok { return fmt.Errorf("type cast failed") } + + if rhs.tree.Len() == 0 { + // if try to append an empty set, then return directly + return nil + } + // if either is empty, family can be ignored. if lhs.tree.Len() != 0 && rhs.tree.Len() != 0 { _, w, _ := lhs.tree.Minimum() |