From 33df4fe2c40f5052cb28c791d1af2b33f34ca060 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 16 Jun 2026 10:37:48 -0700
Subject: [PATCH] storage: nil-safe ReplicaPlacement.String()

Guard a nil receiver like TTL.String() already does, so formatting a
zero-value VolumeInfo can't depend on fmt's panic recovery.
---
 weed/storage/super_block/replica_placement.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/weed/storage/super_block/replica_placement.go b/weed/storage/super_block/replica_placement.go
index 1562882a6..ec4ecf254 100644
--- a/weed/storage/super_block/replica_placement.go
+++ b/weed/storage/super_block/replica_placement.go
@@ -69,6 +69,9 @@ func (rp *ReplicaPlacement) Byte() byte {
 }
 
 func (rp *ReplicaPlacement) String() string {
+	if rp == nil {
+		return ""
+	}
 	b := make([]byte, 3)
 	b[0] = byte(rp.DiffDataCenterCount + '0')
 	b[1] = byte(rp.DiffRackCount + '0')