From 654985e981f6c00071e73bc73e1f638404c26430 Mon Sep 17 00:00:00 2001
From: bert hubert <bert.hubert@netherlabs.nl>
Date: Sun, 23 Dec 2018 16:18:37 +0100
Subject: [PATCH] improve error message

---
 lmdb-safe.hh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lmdb-safe.hh b/lmdb-safe.hh
index 95785cb..35b1eb9 100644
--- a/lmdb-safe.hh
+++ b/lmdb-safe.hh
@@ -374,8 +374,8 @@ public:
   void commit()
   {
     closeCursors();
-    if(mdb_txn_commit(d_txn)) {
-      throw std::runtime_error("committing");
+    if(int rc = mdb_txn_commit(d_txn)) {
+      throw std::runtime_error("committing: " + std::string(mdb_strerror(rc)));
     }
     d_parent->decRWTX();