From f4ca6ed6b9977296db71a8f990ebb702c714b538 Mon Sep 17 00:00:00 2001
From: Leo Yuriev <leo@yuriev.ru>
Date: Mon, 2 Oct 2017 18:01:08 +0300
Subject: [PATCH] mdbx: fix handling MAX_MAPSIZE32 limit.

---
 src/mdbx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mdbx.c b/src/mdbx.c
index 897051a1..bb2bb1f9 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -4473,7 +4473,8 @@ LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower,
     if ((size_t)size_now >= MAX_MAPSIZE / 2)
       size_upper = MAX_MAPSIZE;
     else if (MAX_MAPSIZE != MAX_MAPSIZE32 &&
-             (size_t)size_now >= MAX_MAPSIZE32 / 2)
+             (size_t)size_now >= MAX_MAPSIZE32 / 2 &&
+             (size_t)size_now <= MAX_MAPSIZE32 / 4 * 3)
       size_upper = MAX_MAPSIZE32;
     else {
       size_upper = size_now + size_now;