From 709b4a409fddc4382ca54f418c48c7a4c5c556bd Mon Sep 17 00:00:00 2001
From: Martchus <martchus@gmx.net>
Date: Mon, 1 Feb 2021 17:10:29 +0100
Subject: [PATCH] Ensure attachments have been parsed before making MKV file

---
 matroska/matroskacontainer.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/matroska/matroskacontainer.cpp b/matroska/matroskacontainer.cpp
index 98940ac..ef14482 100644
--- a/matroska/matroskacontainer.cpp
+++ b/matroska/matroskacontainer.cpp
@@ -851,6 +851,14 @@ void MatroskaContainer::internalMakeFile(Diagnostics &diag, AbortableProgressFee
         diag.emplace_back(DiagLevel::Critical, "The header has not been parsed yet.", context);
         throw InvalidDataException();
     }
+    switch (fileInfo().attachmentsParsingStatus()) {
+    case ParsingStatus::Ok:
+    case ParsingStatus::NotSupported:
+        break;
+    default:
+        diag.emplace_back(DiagLevel::Critical, "Attachments have to be parsed without critical errors before changes can be applied.", context);
+        throw InvalidDataException();
+    }
 
     // define variables for parsing the elements of the original file
     EbmlElement *level0Element = firstElement();