From 05638e50834fc96a3423c1e6f830d7c45b8dcdc4 Mon Sep 17 00:00:00 2001
From: arvidn <arvid@libtorrent.org>
Date: Mon, 15 Aug 2022 00:36:16 +0200
Subject: [PATCH] fixup dummy lock

---
 include/libtorrent/aux_/pread_storage.hpp | 4 ++++
 src/pread_storage.cpp                     | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/libtorrent/aux_/pread_storage.hpp b/include/libtorrent/aux_/pread_storage.hpp
index e1a92c377f5..4a8c797257c 100644
--- a/include/libtorrent/aux_/pread_storage.hpp
+++ b/include/libtorrent/aux_/pread_storage.hpp
@@ -167,6 +167,10 @@ namespace libtorrent::aux {
 		mutable typed_bitfield<file_index_t> m_file_created;
 
 		bool m_allocate_files;
+
+#if TORRENT_HAVE_MAP_VIEW_OF_FILE
+		std::shared_ptr<std::mutex> m_dummy_lock;
+#endif
 	};
 
 }
diff --git a/src/pread_storage.cpp b/src/pread_storage.cpp
index f503bff5df7..1b74c7a57c0 100644
--- a/src/pread_storage.cpp
+++ b/src/pread_storage.cpp
@@ -78,6 +78,9 @@ namespace {
 		, m_part_file_name("." + to_hex(params.info_hash) + ".parts")
 		, m_pool(pool)
 		, m_allocate_files(params.mode == storage_mode_allocate)
+#if TORRENT_HAVE_MAP_VIEW_OF_FILE
+		, m_dummy_lock(std::make_shared<std::mutex>())
+#endif
 	{
 		if (params.mapped_files) m_mapped_files = std::make_unique<file_storage>(*params.mapped_files);
 
@@ -755,7 +758,7 @@ namespace {
 			return m_pool.open_file(storage_index(), m_save_path, file
 				, files(), mode
 #if TORRENT_HAVE_MAP_VIEW_OF_FILE
-				, std::shared_ptr<std::mutex>()
+				, m_dummy_lock
 #endif
 				);
 		}