.

wcfs/internal/xbtree/rangeset.go

@@ -103,9 +103,10 @@ func (S *RangeSet) AddRange(r Range) {
 			S.rangev[jhi:]...)...)
 		tracefRSet("\tmerge [%d:%d]\t-> %s\n", ilo, jhi, S)
 	}
+	jhi = -1 // no longer valid
 
 	// if [r.lo,r.hi) was outside of any entry - create new entry
-	if r.hi_ <= S.rangev[ilo].lo {
+	if r.hi_ < S.rangev[ilo].lo {
 		S.rangev = append(
 			S.rangev[:ilo],		append([]Range{
 			r},