SEGFAULT trying to switch visible state of Bracket with "V" key

• Mar 18, 2017 - 09:36
Reported version
3.0
Type
Functional
Severity
S2 - Critical
Status
closed
Project
MuseScore

Testing the "V" shortcut to switch the bracket visible state(the state doesn't get changed, the bracket only gets deselected), there happens to be a SEGFAULT. The steps to recreate the issue :

1. Create a new Score (for ex. using GrandStaff template).
2. Select the bracket then press "V" key, it should get deselected. Do Selecting and pressing V one time. (If no bracket used in Score, add it from the brackets palette under the advanced workspace and try the same aforementioned steps)

The Application should crash.

Comments

• Mar 18, 2017 - 10:01

Here is stack trace for reference:

1 main_arena 0x7fffeb8d4c28
2 Ms::ScoreElement::isNote scoreElement.h 314 0xb3e075
3 Ms::MuseScore::endCmd musescore.cpp 4594 0xcce0dc
4 Ms::Score::endCmd cmd.cpp 190 0x149eebc
5 Ms::ScoreView::cmd scoreview.cpp 3131 0xb2c39e
6 Ms::MuseScore::cmd musescore.cpp 5015 0xcd0625
7 Ms::MuseScore::cmd musescore.cpp 4565 0xccddfe
8 Ms::MuseScore::qt_static_metacall moc_musescore_IKSZSQWDH4YDZS.cpp 740 0x114c433
9 QMetaObject::activate(QObject *, int, int, void * *) 0x7fffec12cd49
10 Ms::ScoreTab::actionTriggered moc_scoretab_QR4BWIRYNXAVBM.cpp 184 0x115391d
11 Ms::ScoreTab::qt_static_metacall moc_scoretab_QR4BWIRYNXAVBM.cpp 97 0x1153591
12 QMetaObject::activate(QObject *, int, int, void * *) 0x7fffec12cd49
13 QActionGroup::triggered(QAction *) 0x7ffff3c1c4ff
14 ?? 0x7ffff3c1d079
15 QMetaObject::activate(QObject *, int, int, void * *) 0x7fffec12cd49
16 QAction::triggered(bool) 0x7ffff3c18c92
17 QAction::activate(QAction::ActionEvent) 0x7ffff3c1b3f0
18 QAction::event(QEvent *) 0x7ffff3c1bd6c
19 QApplicationPrivate::notify_helper(QObject *, QEvent *) 0x7ffff3c1f34c
20 QApplication::notify(QObject *, QEvent *) 0x7ffff3c26b61
...

In MuseScore::endCmd(), the address for e is 0x7ffffffff9ad8, which looks suspicious, but seems to be valid...I don't know....

Note, it seems if I have a grand staff piano with another single-staff instrumnet, that this crash doesn't occur. But it does occur when the grand staff is alone.

Also I'm noticing a lot of cmd() calls

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