6 files changed, 10 insertions, 2 deletions
diff --git a/include/m_system.h b/include/m_system.h
index f961e15e3c..2296a7993b 100644
--- a/include/m_system.h
+++ b/include/m_system.h
@@ -477,6 +477,7 @@ public:
 	MBinBuffer(size_t preAlloc);
 	MBinBuffer(const MBinBuffer &orig);
 	~MBinBuffer();
+	MBinBuffer& operator=(MBinBuffer &&) noexcept;
 
 	__forceinline char* data() const { return m_buf; }
 	__forceinline bool isEmpty() const { return m_buf == nullptr; }
diff --git a/libs/win32/mir_core.lib b/libs/win32/mir_core.lib
index a9d8da4aba..726035bcc4 100644
--- a/libs/win32/mir_core.lib
+++ b/libs/win32/mir_core.lib
diff --git a/libs/win64/mir_core.lib b/libs/win64/mir_core.lib
index d21d5287ea..11394b3312 100644
--- a/libs/win64/mir_core.lib
+++ b/libs/win64/mir_core.lib
diff --git a/src/mir_core/src/binbuffer.cpp b/src/mir_core/src/binbuffer.cpp
index d558dcc7b7..3b961b489b 100644
--- a/src/mir_core/src/binbuffer.cpp
+++ b/src/mir_core/src/binbuffer.cpp
@@ -89,6 +89,13 @@ MBinBuffer::MBinBuffer(size_t preAlloc)
 	m_buf = (char*)(p + 1);
 }
 
+MBinBuffer& MBinBuffer::operator=(MBinBuffer &&from) noexcept
+{
+	m_buf = from.m_buf;
+	from.m_buf = nullptr;
+	return *this;
+}
+
 MBinBuffer::~MBinBuffer()
 {
 	ptr2buf(m_buf)->free();
diff --git a/src/mir_core/src/mir_core.def b/src/mir_core/src/mir_core.def
index 012cd74908..3fd76a31e3 100644
--- a/src/mir_core/src/mir_core.def
+++ b/src/mir_core/src/mir_core.def
@@ -991,7 +991,7 @@ CallFunctionSync @1170
 ?RemovePage@CCtrlPages@@QAEXH@Z @1205 NONAME
 ??0MBinBuffer@@QAE@XZ @1206 NONAME
 ??1MBinBuffer@@QAE@XZ @1207 NONAME
-??4MBinBuffer@@QAEAAV0@ABV0@@Z @1208 NONAME
+??4MBinBuffer@@QAEAAV0@$$QAV0@@Z @1208 NONAME
 ?append@MBinBuffer@@QAEXPBXI@Z @1209 NONAME
 ?appendBefore@MBinBuffer@@QAEXPBXI@Z @1210 NONAME
 ?data@MBinBuffer@@QBEPADXZ @1211 NONAME
diff --git a/src/mir_core/src/mir_core64.def b/src/mir_core/src/mir_core64.def
index b2e8cf77de..d99deff994 100644
--- a/src/mir_core/src/mir_core64.def
+++ b/src/mir_core/src/mir_core64.def
@@ -991,7 +991,7 @@ CallFunctionSync @1170
 ?RemovePage@CCtrlPages@@QEAAXH@Z @1205 NONAME
 ??0MBinBuffer@@QEAA@XZ @1206 NONAME
 ??1MBinBuffer@@QEAA@XZ @1207 NONAME
-??4MBinBuffer@@QEAAAEAV0@AEBV0@@Z @1208 NONAME
+??4MBinBuffer@@QEAAAEAV0@$$QEAV0@@Z @1208 NONAME
 ?append@MBinBuffer@@QEAAXPEBX_K@Z @1209 NONAME
 ?appendBefore@MBinBuffer@@QEAAXPEBX_K@Z @1210 NONAME
 ?data@MBinBuffer@@QEBAPEADXZ @1211 NONAME