* This fixes ticket #1865

* Allocate the buffer to flatten the message on the heap, if it's size is bigger then a given 
  buffer on the stack. It seem's to exceed the stack size (this might count for AddFlat() too).

  Note: With this change one is able to copy the text into the clipboard (1mb), but it
        is still impossible to paste it somewhere, as in BClipboard::_DownloadFromSystem()
        SendMessage() fails transferring the data back in the reply msg because of the port size limit...



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24196 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/app/Message.cpp

@@ -2300,13 +2300,25 @@ BMessage::AddMessage(const char *name, const BMessage *message)
 	copying an extra buffer. Functions can be added that return a direct
 	pointer into the message. */
 
+	char buf[4096] = { 0 };
 	ssize_t size = message->FlattenedSize();
-	char buffer[size];
+
+	bool freeBuffer = false;
+	char* buffer = NULL;
+	if (size > (ssize_t)sizeof(buffer)) {
+		freeBuffer = true;
+		buffer = static_cast<char*>(malloc(size));
+	} else {
+		buffer = buf;
+	}
 
 	status_t error = message->Flatten(buffer, size);
 
 	if (error >= B_OK)
-		error = AddData(name, B_MESSAGE_TYPE, &buffer, size, false);
+		error = AddData(name, B_MESSAGE_TYPE, buffer, size, false);
+
+	if (freeBuffer)
+		free(buffer);
 
 	return error;
 }