From 6fb628d88daae4989183d7f81eaaffa2186e4381 Mon Sep 17 00:00:00 2001
From: Leo Yuriev <leo@yuriev.ru>
Date: Mon, 3 Sep 2018 13:38:40 +0300
Subject: [PATCH] mdbx: require data == NULL for mdbx_cursor_get(MDBX_SET).

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

diff --git a/src/mdbx.c b/src/mdbx.c
index 8ba62f22..96a236dd 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -7665,6 +7665,9 @@ int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
       return MDBX_INCOMPATIBLE;
   /* FALLTHRU */
   case MDBX_SET:
+    if (op == MDBX_SET && unlikely(data != NULL))
+      return MDBX_EINVAL;
+  /* FALLTHRU */
   case MDBX_SET_KEY:
   case MDBX_SET_RANGE:
     if (unlikely(key == NULL))