protect node slices

2020-12-06 22:36:09 +01:00 · 2020-12-06 22:36:09 +01:00 · fd0a780a76
commit fd0a780a76
parent ba7be0c5f2
1 changed files with 5 additions and 4 deletions
--- a/reflect.go
+++ b/reflect.go
@ -281,10 +281,11 @@ func checkPending(p *pending, r reflect.Value) (applyRef func(node) node, ref no
 	applyRef = func(n node) node {
 		nr = p.values[key]
 		if nr.refCount > 0 {
-			n.parts = append(
-				[]interface{}{"r", nr.id, "="},
-				n.parts...,
-			)
+			def := []interface{}{"r", nr.id, "="}
+			pp := make([]interface{}, len(def)+len(n.parts))
+			copy(pp, def)
+			copy(pp[len(def):], n.parts)
+			n.parts = pp
 		}

 		delete(p.values, key)