[Bug 436990] Re: audacity crashed with SIGSEGV in DevicePrefs::GetDefaultPlayDevice()

[David Henningsson]

In DevicePrefs::GetDefaultPlayDevice:

   const PaDeviceInfo* devinfo = Pa_GetDeviceInfo(apiinfo->defaultOutputDevice);
   wxString name(devinfo->name, wxConvLocal);

Pa_GetDeviceInfo returns null, so devinfo->name crashes. Devinfo can be
null if the apiinfo does not have a default output device. So a simple
fix to avoid a crash could be to return an empty wxString in this case.

The background cause for this error could be that
DevicePrefs::GetNamesAndLabels() only adds names and labels if there are
devices. Could this lead to a mismatch between
mHost->GetCurrentSelection() and portaudio hostapi indices?


** Changed in: audacity (Ubuntu)
     Assignee: (unassigned) => David Henningsson (diwic)

** Changed in: audacity (Ubuntu)
       Status: New => In Progress

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audacity crashed with SIGSEGV in DevicePrefs::GetDefaultPlayDevice()
https://bugs.launchpad.net/bugs/436990
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