Opening mscx file consistently crashes Musescore

• Dec 3, 2023 - 20:01

When I open the attached file, MuseScore crashes consistently for me on MacOS Sonoma 14.1.2 (apple silicon). I've attached the crash log. MuseScore OS: macOS 14.1, Arch.: x86_64, MuseScore version (64-bit): 4.1.1-232071203, revision: e4d1ddf

Attachment	Size
crashlog.txt	102.91 KB
BasicBeat.mscx	8.99 KB

Comments

Jojo-Schmitz

• Dec 3, 2023 - 20:03

FWIW: 3.6.2 crashes on it too
As does the latest development version

Jojo-Schmitz

• Dec 3, 2023 - 20:09

Has that score been generated by something other than MuseScore?
I see this tag:
<metaTag name="pydrumscoreVersion">0.0.6</metaTag>
and Tabs rather than 2 spaces for indenting
And this looks suspicious too:

<museScore version="4">
    <programVersion></programVersion>
    <programRevision></programRevision>

Jojo-Schmitz

• Dec 3, 2023 - 20:14

and indeed that's the reason for the crash, change that to

<museScore version="4.10">

and it'll load

Jojo-Schmitz

• Dec 3, 2023 - 20:36

A code fix top prevent the crash would be easy

diff --git a/libmscore/scorefile.cpp b/libmscore/scorefile.cpp
index b44a2b3d9c..4bef5ba653 100644
--- a/libmscore/scorefile.cpp
+++ b/libmscore/scorefile.cpp
@@ -1054,7 +1054,7 @@ Score::FileError MasterScore::read1(XmlReader& e, bool ignoreVersionError)
             if (e.name() == "museScore") {
                   const QString& version = e.attribute("version");
                   QStringList sl = version.split('.');
-                  setMscVersion(sl[0].toInt() * 100 + sl[1].toInt());
+                  setMscVersion(sl[0].toInt() * 100 + (sl.size() > 1 ? sl[1].toInt() : 0));
 
                   if (!ignoreVersionError) {
                         if (mscVersion() > MSCVERSION)

The question is whether it is worth the effort, just to be able to read an invalid mscx file

Jojo-Schmitz

• Dec 3, 2023 - 20:37

But see also https://musescore.org/en/node/313044 ;-)

Jojo-Schmitz

• Dec 3, 2023 - 20:56

See also https://musescore.org/en/handbook/developers-handbook/references/versio…, esp. the MSCX file version