From eddb73b3653334d925643e588802cbe86dcd27a5 Mon Sep 17 00:00:00 2001
From: "ingo/mydev@chilla.local" <>
Date: Sat, 29 Jul 2006 21:58:50 +0200
Subject: [PATCH] Bug#20719 - Reading dynamic records with write buffer could
 fail After merge fix

---
 myisam/mi_dynrec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/myisam/mi_dynrec.c b/myisam/mi_dynrec.c
index 51f2ff349f8..4dec3055fa1 100644
--- a/myisam/mi_dynrec.c
+++ b/myisam/mi_dynrec.c
@@ -1141,6 +1141,9 @@ int _mi_read_dynamic_record(MI_INFO *info, my_off_t filepos, byte *buf)
     block_info.second_read= 0;
     do
     {
+      /* A corrupted table can have wrong pointers. (Bug# 19835) */
+      if (filepos == HA_OFFSET_ERROR)
+        goto panic;
       if (info->opt_flag & WRITE_CACHE_USED &&
 	  info->rec_cache.pos_in_file < filepos + MI_BLOCK_INFO_HEADER_LENGTH &&
 	  flush_io_cache(&info->rec_cache))