A fix (bug #6878: Crash with engine=memory).

heap/hp_open.c:
  A fix (bug #6878: Crash with engine=memory).
  Record length should be >= sizeof(byte*).

1 files changed, 7 insertions, 0 deletions

diff --git a/heap/hp_open.c b/heap/hp_open.c
index 3bf2881667a..9cb087e3bad 100644
--- a/heap/hp_open.c
+++ b/heap/hp_open.c
@@ -41,6 +41,13 @@ HP_INFO *heap_open(const char *name, int mode, uint keys, HP_KEYDEF *keydef,
   {
     DBUG_PRINT("info",("Initializing new table"));
     implicit_emptied= 1;
+
+    /*
+      We have to store sometimes byte* del_link in records,
+      so the record length should be at least sizeof(byte*)
+    */
+    set_if_bigger(reclength, sizeof (byte*));
+
     for (i=key_segs=max_length=0 ; i < keys ; i++)
     {
       key_segs+= keydef[i].keysegs;