From 1d0993d84fd87ef620f60380745914bac3e77d34 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Fri, 10 Jan 2020 17:35:12 +0100
Subject: [PATCH] memcached_dump: ignore CLIENT_ERROR Illegal slab id

---
 libmemcached/dump.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/libmemcached/dump.cc b/libmemcached/dump.cc
index fcb66604..f74f3ed1 100644
--- a/libmemcached/dump.cc
+++ b/libmemcached/dump.cc
@@ -126,6 +126,18 @@ static memcached_return_t ascii_dump(Memcached *memc, memcached_dump_fn *callbac
         assert(response_rc == MEMCACHED_SUCCESS); // Just fail
         return response_rc;
       }
+      else if (response_rc == MEMCACHED_CLIENT_ERROR)
+      {
+        /* The maximum number of slabs has changed in the past (currently 1<<6-1),
+         * so ignore any client errors complaining about an illegal slab id.
+         */
+        if (0 == strncmp(buffer, "CLIENT_ERROR Illegal slab id", sizeof("CLIENT_ERROR Illegal slab id") - 1)) {
+          memcached_error_free(*instance);
+          memcached_error_free(*memc);
+        } else {
+          return response_rc;
+        }
+      }
       else
       {
         // IO error of some sort must have occurred
-- 
2.30.2