Manage MIDI Devices -> Banks... -> Import...
Pick GM.rgd for example
Hit cancel on the import options dialog, and it crashes in
~ImportDeviceDialog()
ImportDeviceDialog::~ImportDeviceDialog()
{
...
for (int i = 0; i < m_devices.size(); ++i) delete m_devices[i];
}
m_devices.size() == 1. A Device is created and push_back to m_devices on line
379 with the pointer pointing at 12345678.
The pointer is still pointing at 12345678 in the dtor, and the only other code
I see that could possibly delete the device is in the accept() method, which
is not firing.
The weirdest thing is I can m_devices[0]->getBanks.size() there in the dtor
and it returns reasonable looking numbers for the different devices I've
loaded.
So I put a look-at-me in the Device dtor to make sure it wasn't crashing in
there, and when you delete m_devices[i] on the offending line, the Device dtor
doesn't say look-at-me at all. This suggests the pointer really is invalid.
So why on earth is m_devices[0]->getBanks.size() returning something sensible?
Random chance?
I'm pretty stumped on this one. If nobody with better hacker ninja chops than
I've got has time to look into this before the release, I suggest we see what
happens if we comment that line out and make the conscious choice to leave a
(possible?) memory leak in the place of a known crash.
If you try to delete an object and it's not there, is it really a memory leak
at all? But if it's not there, what the hell is deleting it?
I'm confused. But it's also three hours past my bedtime.
--
D. Michael McIntyre
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