Do not start from a non-relevant parent in Buffer cloning.

(cherry picked from commit e077255aea)

src/Buffer.cpp

@@ -570,13 +570,13 @@ Buffer::~Buffer()
 }
 
 
-Buffer * Buffer::cloneFromMaster() const
+Buffer * Buffer::cloneWithChildren() const
 {
 	BufferMap bufmap;
 	cloned_buffers.push_back(new CloneList);
 	CloneList * clones = cloned_buffers.back();
 
-	masterBuffer()->cloneWithChildren(bufmap, clones);
+	cloneWithChildren(bufmap, clones);
 
 	// make sure we got cloned
 	BufferMap::const_iterator bit = bufmap.find(this);

src/Buffer.h

@@ -157,9 +157,9 @@ public:
 	/// Destructor
 	~Buffer();
 
-	/// Clones the entire structure of which this Buffer is part, starting
-	/// with the master and cloning all the children, too.
-	Buffer * cloneFromMaster() const;
+	/// Clones the entire structure of which this Buffer is part, 
+	/// cloning all the children, too.
+	Buffer * cloneWithChildren() const;
 	/// Just clones this single Buffer. For autosave.
 	Buffer * cloneBufferOnly() const;
 	///

src/frontends/qt4/GuiView.cpp

@@ -3598,10 +3598,10 @@ bool GuiView::GuiViewPrivate::asyncBufferProcessing(
 #if EXPORT_in_THREAD
 	if (allow_async) {
 		GuiViewPrivate::busyBuffers.insert(used_buffer);
-		Buffer * cloned_buffer = used_buffer->cloneFromMaster();
+		Buffer * cloned_buffer = used_buffer->cloneWithChildren();
 		if (!cloned_buffer) {
 			Alert::error(_("Export Error"),
-									 _("Error cloning the Buffer."));
+				     _("Error cloning the Buffer."));
 			return false;
 		}
 		QFuture<Buffer::ExportStatus> f = QtConcurrent::run(

status.23x

@@ -48,7 +48,8 @@ What's new
 
 * DOCUMENT INPUT/OUTPUT
 
-
+- When cloning a buffer, do not start from a parent if it is not the
+  current master (e.g., when compiling a child alone).
 
 
 * USER INTERFACE