From 83e303b0591d22729aa5bf97e4246b5831f7a989 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sun, 19 Apr 2020 14:56:17 +0300
Subject: [PATCH] mdbx: alter MDBX_CURSOR_FULL description.

Change-Id: I70d13e7503d10c6050bd17e4dd8bd814e46799af
---
 mdbx.h     | 3 ++-
 src/core.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/mdbx.h b/mdbx.h
index acaca64c..3f14d2c1 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -1449,7 +1449,8 @@ typedef enum MDBX_cursor_op {
 /* Transaction has too many dirty pages, i.e transaction too big */
 #define MDBX_TXN_FULL (-30788)
 
-/* Cursor stack too deep - internal error */
+/* Cursor stack too deep - this usually indicates corruption,
+ * i.e branch-pages loop */
 #define MDBX_CURSOR_FULL (-30787)
 
 /* Page has not enough space - internal error */
diff --git a/src/core.c b/src/core.c
index 1c4b815e..a4d2a155 100644
--- a/src/core.c
+++ b/src/core.c
@@ -3180,7 +3180,8 @@ static const char *__mdbx_strerr(int errnum) {
       NULL /* MDBX_TLS_FULL (-30789): unused in MDBX */,
       "MDBX_TXN_FULL: Transaction has too many dirty pages,"
       " i.e transaction is too big",
-      "MDBX_CURSOR_FULL: Internal error - Cursor stack limit reached",
+      "MDBX_CURSOR_FULL: Cursor stack limit reachedn - this usually indicates"
+      " corruption, i.e branch-pages loop",
       "MDBX_PAGE_FULL: Internal error - Page has no more space",
       "MDBX_UNABLE_EXTEND_MAPSIZE: Database engine was unable to extend"
       " mapping, e.g. since address space is unavailable or busy,"