From 8e8b40e7a2bddb878f84f991e47c550662c75f7a Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Tue, 18 Sep 2018 20:50:47 +0300
Subject: [PATCH] mdbx: fix update_gc() assertion.

Change-Id: I433382de0ddab41ad1530ee674ed22f9003c2779
---
 src/mdbx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mdbx.c b/src/mdbx.c
index d21b70eb..1351cdb4 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -4013,7 +4013,9 @@ retry:
         /* LY: freedb is empty, will look any free txn-id in high2low order. */
         do {
           --head_gc_id;
-          mdbx_assert(env, MDBX_PNL_LAST(txn->mt_lifo_reclaimed) > head_gc_id);
+          mdbx_assert(env,
+                      MDBX_PNL_IS_EMPTY(txn->mt_lifo_reclaimed) ||
+                          MDBX_PNL_LAST(txn->mt_lifo_reclaimed) > head_gc_id);
           rc = mdbx_txl_append(&txn->mt_lifo_reclaimed, head_gc_id);
           if (unlikely(rc != MDBX_SUCCESS))
             goto bailout;