if !bytes.Contains(out, []byte(hashMatch)) || !pgoDebugRE.Match(out) {
		t.Errorf("output does not contain expected source line, out:\n%s", out)
	}

	// Check that a hash mismatch turns off PGO inlining.
	hash = "v0" // 0 should not match srcPos
	gcflag = gcflag0 + ",pgohash=" + hash
	out = buildPGOInliningTest(t, dir, gcflag)
	if bytes.Contains(out, []byte(hashMatch)) || pgoDebugRE.Match(out) {

	// queued output tokens
	tokens []token

	// deflate state
	length         int
	offset         int
	maxInsertIndex int
	err            error

	// hashMatch must be able to contain hashes for the maximum match length.
	hashMatch [maxMatchLength - 1]uint32
}

func (d *compressor) fillDeflate(b []byte) int {
	if d.index >= 2*windowSize-(minMatchLength+maxMatchLength) {
		// shift the window by windowSize

		w.d.fill, wref.d.fill = nil, nil
		w.d.step, wref.d.step = nil, nil
		w.d.bulkHasher, wref.d.bulkHasher = nil, nil
		w.d.bestSpeed, wref.d.bestSpeed = nil, nil
		// hashMatch is always overwritten when used.
		copy(w.d.hashMatch[:], wref.d.hashMatch[:])
		if len(w.d.tokens) != 0 {
			t.Errorf("level %d Writer not reset after Reset. %d tokens were present", level, len(w.d.tokens))
		}

// If the parent does not exist, it will be added.
func (d *dataUsageCache) replace(path, parent string, e dataUsageEntry) {
	hash := hashPath(path)
	if d.Cache == nil {
		d.Cache = make(map[string]dataUsageEntry, 100)
	}
	d.Cache[hash.Key()] = e
	if parent != "" {
		phash := hashPath(parent)
		p := d.Cache[phash.Key()]
		p.addChild(hash)
		d.Cache[phash.Key()] = p
	}
}

			}
		}

		// Transfer existing
		if !into.Compacted {
			for _, folder := range existingFolders {
				h := hashPath(folder.name)
				f.updateCache.copyWithChildren(&f.oldCache, h, folder.parent)
			}
		}
		// Scan new...
		for _, folder := range newFolders {
			h := hashPath(folder.name)
			// Add new folders to the update tree so totals update for these.
			if !into.Compacted {
				var foundAny bool