From 0bcf6d4d65c323f07de85ccda44ade4c80ddf06d Mon Sep 17 00:00:00 2001
From: cifer <maintianyu@gmail.com>
Date: Sun, 25 Feb 2018 12:14:01 +0800
Subject: [PATCH 1/3] Fix #436 object_database created outside of witness data
 directory

---
 libraries/chain/db_management.cpp                   | 7 ++++++-
 libraries/chain/include/graphene/chain/database.hpp | 8 ++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/libraries/chain/db_management.cpp b/libraries/chain/db_management.cpp
index 68f6fad1..f22a46df 100644
--- a/libraries/chain/db_management.cpp
+++ b/libraries/chain/db_management.cpp
@@ -119,7 +119,9 @@ void database::reindex(fc::path data_dir, const genesis_state_type& initial_allo
 void database::wipe(const fc::path& data_dir, bool include_blocks)
 {
    ilog("Wiping database", ("include_blocks", include_blocks));
-   close();
+   if (_opened) {
+     close();
+   }
    object_database::wipe(data_dir);
    if( include_blocks )
       fc::remove_all( data_dir / "database" );
@@ -148,6 +150,7 @@ void database::open(
                          ("last_block->id", last_block->id())("head_block_num",head_block_num()) );
          }
       }
+      _opened = true;
    }
    FC_CAPTURE_LOG_AND_RETHROW( (data_dir) )
 }
@@ -198,6 +201,8 @@ void database::close(bool rewind)
       _block_id_to_block.close();
 
    _fork_db.reset();
+
+   _opened = false;
 }
 
 void database::force_slow_replays()
diff --git a/libraries/chain/include/graphene/chain/database.hpp b/libraries/chain/include/graphene/chain/database.hpp
index 84d1ea9b..6b9d973a 100644
--- a/libraries/chain/include/graphene/chain/database.hpp
+++ b/libraries/chain/include/graphene/chain/database.hpp
@@ -561,6 +561,14 @@ namespace graphene { namespace chain {
          node_property_object              _node_property_object;
          fc::hash_ctr_rng<secret_hash_type, 20> _random_number_generator;
          bool                              _slow_replays = false;
+
+         /**
+          * Whether database is successfully opened or not.
+          *
+          * The database is considered open when there's no exception
+          * or assertion fail during database::open() method.
+          */
+         bool                              _opened = false;
    };
 
    namespace detail

From f1ffd52e1e7c764513a3bfe53ee941643ad5b66e Mon Sep 17 00:00:00 2001
From: cifer <maintianyu@gmail.com>
Date: Mon, 26 Feb 2018 10:59:51 +0800
Subject: [PATCH 2/3] supplement more comments on database::_opened variable

---
 libraries/chain/include/graphene/chain/database.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libraries/chain/include/graphene/chain/database.hpp b/libraries/chain/include/graphene/chain/database.hpp
index 6b9d973a..b513fd2f 100644
--- a/libraries/chain/include/graphene/chain/database.hpp
+++ b/libraries/chain/include/graphene/chain/database.hpp
@@ -566,7 +566,8 @@ namespace graphene { namespace chain {
           * Whether database is successfully opened or not.
           *
           * The database is considered open when there's no exception
-          * or assertion fail during database::open() method.
+          * or assertion fail during database::open() method, and
+          * database::close() has not been called, or failed during execution.
           */
          bool                              _opened = false;
    };

From b3c64c83b248c1549c825bdf14717adc7f07b5c5 Mon Sep 17 00:00:00 2001
From: John Jones <jmjatlanta@gmail.com>
Date: Mon, 14 Jan 2019 13:55:13 -0500
Subject: [PATCH 3/3] prevent segfault when destructing application obj

---
 libraries/chain/db_management.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/chain/db_management.cpp b/libraries/chain/db_management.cpp
index f22a46df..a0a78682 100644
--- a/libraries/chain/db_management.cpp
+++ b/libraries/chain/db_management.cpp
@@ -157,6 +157,9 @@ void database::open(
 
 void database::close(bool rewind)
 {
+   if (!_opened)
+      return;
+      
    // TODO:  Save pending tx's on close()
    clear_pending();