From 36ef82d7acb095e0eb8bd44de83fd97aa739ed7d Mon Sep 17 00:00:00 2001
From: Seebs <seebs@seebs.net>
Date: Fri, 22 Nov 2019 13:52:05 -0600
Subject: [PATCH] Zero bitmap storage when reusing it for container-as-bitmap

If you don't do this, it works fine the first time you use a given
storage, but after that you start seeing spurious bits.
---
 roaring/container_stash.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/roaring/container_stash.go b/roaring/container_stash.go
index 8aab2f4d3..89c63ac8f 100644
--- a/roaring/container_stash.go
+++ b/roaring/container_stash.go
@@ -428,6 +428,9 @@ func (c *Container) AsBitmap(target []uint64) (out []uint64) {
 		out = make([]uint64, 1024)
 	} else {
 		out = target
+		for i := range out {
+			out[i] = 0
+		}
 	}
 	if c.typeID == containerArray {
 		a := c.array()