flush bulk-insert tree on dup key

myisam/mi_write.c

@@ -152,6 +152,17 @@ int mi_write(MI_INFO *info, byte *record)
   save_errno=my_errno;
   if (my_errno == HA_ERR_FOUND_DUPP_KEY || my_errno == HA_ERR_RECORD_FILE_FULL)
   {
+    if (info->bulk_insert)
+    {
+      int j;
+      for (j=0 ; j < share->base.keys ; j++)
+      {
+        if (is_tree_inited(& info->bulk_insert[j]))
+        {
+          reset_tree(& info->bulk_insert[j]);
+        }
+      }
+    }
     info->errkey= (int) i;
     while ( i-- > 0)
     {

mysql-test/r/bulk_replace.result

+a	b	c
+3	1	3
+2	2	2
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK

mysql-test/t/bulk_replace.test

+#
+# this is a test of bulk-insert code
+# as used by REPLACE
+#
+# by Monty
+#
+
+drop table if exists t1;
+CREATE TABLE t1 (a int, unique (a), b int not null, unique(b), c int not null, index(c));
+replace into t1 values (1,1,1),(2,2,2),(3,1,3);
+select * from t1;
+check table t1;
+drop table t1;
+