diff --git a/Makefile b/Makefile
index 058a88847..3f1a42949 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,6 @@ LDFLAGS="-X github.com/pilosa/pilosa/v2.Version=$(VERSION) -X github.com/pilosa/
 GO_VERSION=latest
 RELEASE ?= 0
 RELEASE_ENABLED = $(subst 0,,$(RELEASE))
-NOCHECKPTR=$(shell go version | grep -q 'go1.1[4,5,6,7]' && echo \"-gcflags=all=-d=checkptr=0\" )
 BUILD_TAGS += $(if $(RELEASE_ENABLED),release)
 BUILD_TAGS += shardwidth$(SHARD_WIDTH)
 TEST_TAGS = roaringparanoia
@@ -39,11 +38,11 @@ vendor: go.mod
 
 # Run test suite
 test:
-	go test ./... -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR) -v
+	go test ./... -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -v
 
 # Run test suite with race flag
 test-race:
-	go test ./... -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -race $(NOCHECKPTR) -timeout 60m -v
+	go test ./... -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -race -timeout 60m -v
 
 testv: topt testvsub
 
@@ -58,7 +57,7 @@ testvsub:
 	set -e; for i in boltdb ctl http pg pql rbf roaring server sql txkey; do \
            echo; echo "___ testing subpkg $$i"; \
            cd $$i; pwd; \
-           go test -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR) -v -timeout 60m || break; \
+           go test -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -v -timeout 60m || break; \
            echo; echo "999 done testing subpkg $$i"; \
            cd ..; \
         done
@@ -67,7 +66,7 @@ testvsub-race:
 	set -e; for i in boltdb ctl http pg pql rbf roaring server sql txkey; do \
            echo; echo "___ testing subpkg $$i -race"; \
            cd $$i; pwd; \
-           go test -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR) -v -race -timeout 60m || break; \
+           go test -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -v -race -timeout 60m || break; \
            echo; echo "999 done testing subpkg $$i -race"; \
            cd ..; \
         done
@@ -212,49 +211,49 @@ docker-test:
 # The \-\-\- FAIL avoids counting the extra two FAIL strings at then bottom of log.topt.
 topt:
 	mv log.topt.roar log.topt.roar.prev || true
-	go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.roar
+	go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.roar
 	@echo "   log.topt.roar green: \c"; cat log.topt.roar | grep PASS |wc -l
 	@echo "   log.topt.roar   red: \c"; cat log.topt.roar | grep '\-\-\- FAIL' |wc -l
 
 topt-badger:
 	mv log.topt.badger log.topt.badger.prev || true
-	PILOSA_TXSRC=badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.badger
+	PILOSA_TXSRC=badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.badger
 	@echo "   log.topt.badger green: \c"; cat log.topt.badger | grep PASS |wc -l
 	@echo "   log.topt.badger   red: \c"; cat log.topt.badger | grep '\-\-\- FAIL' |wc -l
 
 topt-badger-race:
 	mv log.topt.badger-race log.topt.badger-race.prev || true
-	PILOSA_TXSRC=badger go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.badger-race
+	PILOSA_TXSRC=badger go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.badger-race
 	@echo "   log.topt.badger-race green: \c"; cat log.topt.badger-race | grep PASS |wc -l
 	@echo "   log.topt.badger-race   red: \c"; cat log.topt.badger-race | grep '\-\-\- FAIL' |wc -l
 
 topt-rbf:
 	mv log.topt.rbf log.topt.rbf.prev || true
-	PILOSA_TXSRC=rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.rbf
+	PILOSA_TXSRC=rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.rbf
 	@echo "   log.topt.rbf green: \c"; cat log.topt.rbf | grep PASS |wc -l
 	@echo "   log.topt.rbf   red: \c"; cat log.topt.rbf | grep '\-\-\- FAIL' |wc -l
 
 topt-rbf-race:
 	mv log.topt.rbf-race log.topt.rbf-race.prev || true
-	PILOSA_TXSRC=rbf go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR) -timeout 120m  2>&1 | tee log.topt.rbf-race
+	PILOSA_TXSRC=rbf go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) -timeout 120m  2>&1 | tee log.topt.rbf-race
 	@echo "   log.topt.rbf-race green: \c"; cat log.topt.rbf-race | grep PASS |wc -l
 	@echo "   log.topt.rbf-race   red: \c"; cat log.topt.rbf-race | grep '\-\-\- FAIL' |wc -l
 
 topt-lmdb:
 	mv log.topt.lmdb log.topt.lmdb.prev || true
-	PILOSA_TXSRC=lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.lmdb
+	PILOSA_TXSRC=lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.lmdb
 	@echo "   log.topt.lmdb green: \c"; cat log.topt.lmdb | grep PASS |wc -l
 	@echo "   log.topt.lmdb   red: \c"; cat log.topt.lmdb | grep '\-\-\- FAIL' |wc -l
 
 topt-lmdb-race:
 	mv log.topt.lmdb log.topt.lmdb.prev || true
-	PILOSA_TXSRC=lmdb go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.lmdb-race
+	PILOSA_TXSRC=lmdb go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.lmdb-race
 	@echo "   log.topt.lmdb-race green: \c"; cat log.topt.lmdb-race | grep PASS |wc -l
 	@echo "   log.topt.lmdb-race   red: \c"; cat log.topt.lmdb-race | grep '\-\-\- FAIL' |wc -l
 
 topt-race:
 	mv log.topt.race log.topt.race.prev || true
-	go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.race
+	go test -race -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.race
 	@echo "   log.topt.race green: \c"; cat log.topt.race | grep PASS |wc -l
 	@echo "   log.topt.race   red: \c"; cat log.topt.race | grep '\-\-\- FAIL' |wc -l
 
@@ -263,73 +262,73 @@ topt-race:
 
 bg-rr: # shorthand for bluegreen test with A:badger; B:roaring
 	mv log.bg-rr log.bg-rr.prev || true
-	PILOSA_TXSRC=badger_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.bg-rr
+	PILOSA_TXSRC=badger_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.bg-rr
 	@echo "   log.bg-rr green: \c"; cat log.bg-rr | grep PASS |wc -l
 	@echo "   log.bg-rr   red: \c"; cat log.bg-rr | grep '\-\-\- FAIL' |wc -l
 
 rr-bg: # bluegreen with A:roaring; B:badger (B's values are returned).
 	mv log.bg.roar_bg log.bg.roar_bg.prev || true
-	PILOSA_TXSRC=roaring_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rr-bg
+	PILOSA_TXSRC=roaring_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rr-bg
 	@echo "   log.rr-bg green: \c"; cat log.rr-bg | grep PASS |wc -l
 	@echo "   log.rr-bg   red: \c"; cat log.rr-bg | grep '\-\-\- FAIL' |wc -l
 
 rbf-rr:
 	mv log.rbf-rr log.rbf-rr.prev || true
-	PILOSA_TXSRC=rbf_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rbf-rr
+	PILOSA_TXSRC=rbf_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rbf-rr
 	@echo "   log.rbf-rr green: \c"; cat log.rbf-rr | grep PASS |wc -l
 	@echo "   log.rbf-rr   red: \c"; cat log.rbf-rr | grep '\-\-\- FAIL' |wc -l
 
 rr-rbf:
 	mv log.rr-rbf log.rr-rbf.prev || true
-	PILOSA_TXSRC=roaring_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rr-rbf
+	PILOSA_TXSRC=roaring_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rr-rbf
 	@echo "   log.rr-rbf green: \c"; cat log.rr-rbf | grep PASS |wc -l
 	@echo "   log.rr-rbf   red: \c"; cat log.rr-rbf | grep '\-\-\- FAIL' |wc -l
 
 rbf-bg:
 	mv log.rbf-bg log.rbf-bg.prev || true
-	PILOSA_TXSRC=rbf_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rbf-bg
+	PILOSA_TXSRC=rbf_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rbf-bg
 	@echo "   log.rbf-bg green: \c"; cat log.rbf-bg | grep PASS |wc -l
 	@echo "   log.rbf-bg   red: \c"; cat log.rbf-bg | grep '\-\-\- FAIL' |wc -l
 
 bg-rbf:
 	mv log.bg-rbf log.bg-rbf.prev || true
-	PILOSA_TXSRC=badger_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.bg-rbf
+	PILOSA_TXSRC=badger_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.bg-rbf
 	@echo "   log.bg-rbf green: \c"; cat log.bg-rbf | grep PASS |wc -l
 	@echo "   log.bg-rbf   red: \c"; cat log.bg-rbf | grep '\-\-\- FAIL' |wc -l
 
 rbf-lm:
 	mv log.rbf-lm log.rbf-lm.prev || true
-	PILOSA_TXSRC=rbf_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rbf-lm
+	PILOSA_TXSRC=rbf_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rbf-lm
 	@echo "   log.rbf-lm green: \c"; cat log.rbf-lm | grep PASS |wc -l
 	@echo "   log.rbf-lm   red: \c"; cat log.rbf-lm | grep '\-\-\- FAIL' |wc -l
 
 lm-rbf:
 	mv log.lm-rbf log.lm-rbf.prev || true
-	PILOSA_TXSRC=lmdb_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.lm-rbf
+	PILOSA_TXSRC=lmdb_rbf go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.lm-rbf
 	@echo "   log.lm-rbf green: \c"; cat log.lm-rbf | grep PASS |wc -l
 	@echo "   log.lm-rbf   red: \c"; cat log.lm-rbf | grep '\-\-\- FAIL' |wc -l
 
 lm-rr:
 	mv log.lm-rr log.lm-rr.prev || true
-	PILOSA_TXSRC=lmdb_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.lm-rr
+	PILOSA_TXSRC=lmdb_roaring go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.lm-rr
 	@echo "   log.lm-rr green: \c"; cat log.lm-rr | grep PASS |wc -l
 	@echo "   log.lm-rr   red: \c"; cat log.lm-rr | grep '\-\-\- FAIL' |wc -l
 
 rr-lm:
 	mv log.rr-lm log.rr-lm.prev || true
-	PILOSA_TXSRC=roaring_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.rr-lm
+	PILOSA_TXSRC=roaring_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.rr-lm
 	@echo "   log.rr-lm green: \c"; cat log.rr-lm | grep PASS |wc -l
 	@echo "   log.rr-lm   red: \c"; cat log.rr-lm | grep '\-\-\- FAIL' |wc -l
 
 bg-lm:
 	mv log.topt.bg-lm log.topt.bg-lm.prev || true
-	PILOSA_TXSRC=badger_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.bg-lm
+	PILOSA_TXSRC=badger_lmdb go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.bg-lm
 	@echo "   log.topt.bg-lm green: \c"; cat log.topt.bg-lm | grep PASS |wc -l
 	@echo "   log.topt.bg-lm   red: \c"; cat log.topt.bg-lm | grep '\-\-\- FAIL' |wc -l
 
 lm-bg:
 	mv log.topt.lm-bg log.topt.lm-bg.prev || true
-	PILOSA_TXSRC=lmdb_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) $(NOCHECKPTR)  2>&1 | tee log.topt.lm-bg
+	PILOSA_TXSRC=lmdb_badger go test -v -tags='$(BUILD_TAGS) $(TEST_TAGS)' $(TESTFLAGS) 2>&1 | tee log.topt.lm-bg
 	@echo "   log.topt.lm-bg green: \c"; cat log.topt.lm-bg | grep PASS |wc -l
 	@echo "   log.topt.lm-bg   red: \c"; cat log.topt.lm-bg | grep '\-\-\- FAIL' |wc -l
 
diff --git a/boltdb/attrstore.go b/boltdb/attrstore.go
index f29cec183..cf5c62473 100644
--- a/boltdb/attrstore.go
+++ b/boltdb/attrstore.go
@@ -25,9 +25,9 @@ import (
 
 	"github.com/cespare/xxhash"
 
-	"github.com/boltdb/bolt"
 	"github.com/pilosa/pilosa/v2"
 	"github.com/pkg/errors"
+	bolt "go.etcd.io/bbolt"
 )
 
 // attrBlockSize is the size of attribute blocks for anti-entropy.
diff --git a/boltdb/translate.go b/boltdb/translate.go
index b5a0e5651..472645367 100644
--- a/boltdb/translate.go
+++ b/boltdb/translate.go
@@ -26,10 +26,10 @@ import (
 	"sync"
 	"time"
 
-	"github.com/boltdb/bolt"
 	"github.com/pilosa/pilosa/v2"
 	"github.com/pkg/errors"
 	"github.com/zeebo/blake3"
+	bolt "go.etcd.io/bbolt"
 
 	"runtime/pprof"
 )
diff --git a/go.mod b/go.mod
index 7ffb4b20f..747138632 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,6 @@ require (
 	github.com/DataDog/datadog-go v0.0.0-20180822151419-281ae9f2d895
 	github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d // indirect
 	github.com/benbjohnson/immutable v0.2.0
-	github.com/boltdb/bolt v1.3.1
 	github.com/cespare/xxhash v1.1.0
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/davecgh/go-spew v1.1.1
@@ -41,6 +40,7 @@ require (
 	github.com/uber/jaeger-client-go v2.16.0+incompatible
 	github.com/uber/jaeger-lib v2.2.0+incompatible // indirect
 	github.com/zeebo/blake3 v0.0.4
+	go.etcd.io/bbolt v1.3.5
 	golang.org/x/mod v0.3.0
 	golang.org/x/net v0.0.0-20200822124328-c89045814202 // indirect
 	golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208
diff --git a/go.sum b/go.sum
index 2f6d5c213..9a94934aa 100644
--- a/go.sum
+++ b/go.sum
@@ -24,8 +24,6 @@ github.com/benbjohnson/immutable v0.2.0/go.mod h1:uc6OHo6PN2++n98KHLxW8ef4W42ylH
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0 h1:HWo1m869IqiPhD389kmkxeTalrjNbbJTC8LXupb+sl0=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4=
-github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
@@ -258,7 +256,10 @@ github.com/zeebo/blake3 v0.0.4 h1:vtZ4X8B2lKXZFg2Xyg6Wo36mvmnJvc2VQYTtA4RDCkI=
 github.com/zeebo/blake3 v0.0.4/go.mod h1:YOZo8A49yNqM0X/Y+JmDUZshJWLt1laHsNSn5ny2i34=
 github.com/zeebo/pcg v0.0.0-20181207190024-3cdc6b625a05 h1:4pW5fMvVkrgkMXdvIsVRRTs69DWYA8uNNQsu1stfVKU=
 github.com/zeebo/pcg v0.0.0-20181207190024-3cdc6b625a05/go.mod h1:Gr+78ptB0MwXxm//LBaEvBiaXY7hXJ6KGe2V32X2F6E=
+go.etcd.io/bbolt v1.3.2 h1:Z/90sZLPOeCy2PwprqkFa25PdkusRzaj9P8zm/KNyvk=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
+go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
+go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
 go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
diff --git a/roaring/roaring.go b/roaring/roaring.go
index d427def14..8cf2587a5 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -2473,14 +2473,14 @@ func BitmapsToRoaring(bitmaps []*Bitmap) []byte {
 			nextData := data[dataOffset:]
 			switch c.typeID { // TODO: make this work on big endian machines
 			case ContainerArray:
-				dataOffset += 2 * copy((*[1 << 16]uint16)(unsafe.Pointer(&nextData[0]))[:], c.array())
+				dataOffset += 2 * copy((*[1 << 16]uint16)(unsafe.Pointer(&nextData[0]))[:c.n:c.n], c.array())
 			case ContainerBitmap:
 				copy((*[1024]uint64)(unsafe.Pointer(&nextData[0]))[:], c.bitmap())
 				dataOffset += 8192
 			case ContainerRun:
 				binary.LittleEndian.PutUint16(nextData[0:2], uint16(c.len))
 				dataOffset += 2
-				dataOffset += 4 * copy((*[1 << 15]Interval16)(unsafe.Pointer(&nextData[2]))[:], c.runs())
+				dataOffset += 4 * copy((*[1 << 15]Interval16)(unsafe.Pointer(&nextData[2]))[:c.len:c.len], c.runs())
 			}
 		}
 	}