.

wcfs/δbtail.go

@@ -217,7 +217,7 @@ func (tidx trackIndex) gc1(oid zodb.Oid) {
 		return // already not there
 	}
 	if t.nchild != 0 {
-		panicf("gc %v  (nchild != 0)", t)
+		panicf("gc %s %v  (nchild != 0)", oid, t)
 	}
 
 	delete(tidx, oid)
@@ -263,11 +263,11 @@ func (tidx trackIndex) ApplyΔ(δ *δtrackIndex) {
 		}
 	}
 	gcq := []zodb.Oid{}
-	for parent, δnc := range δnchild {
-		t := tidx[parent]
+	for oid, δnc := range δnchild {
+		t := tidx[oid]
 		t.nchild += δnc
 		if t.nchild == 0 {
-			gcq = append(gcq, t.parent)
+			gcq = append(gcq, oid)
 		}
 	}
 	for _, oid := range gcq {