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Bug221 re-fixed with better exception safety: see commit 1deff18...

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... in case only some tracks successfully allocate, de-allocate all before
propagating the exception.
This commit is contained in:
Paul Licameli 2018-09-10 17:50:10 -04:00
parent a66d7442a3
commit 2063056243
1 changed files with 5 additions and 5 deletions
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10
src/toolbars/ControlToolBar.cpp
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@ -1399,7 +1399,7 @@ void ControlToolBar::SetupCutPreviewTracks(double WXUNUSED(playStart), double cu
ClearCutPreviewTracks();
AudacityProject *p = GetActiveProject();
if (p) {
mCutPreviewTracks = TrackList::Create();
auto cutPreviewTracks = TrackList::Create();
// Find first selected track (stereo or mono) and duplicate it
const Track *track1 = NULL, *track2 = NULL;
TrackListIterator it(p->GetTracks());
@ -1426,13 +1426,13 @@ void ControlToolBar::SetupCutPreviewTracks(double WXUNUSED(playStart), double cu
}
// use NOTHROW-GUARANTEE:
mCutPreviewTracks->Add(std::move(new1));
cutPreviewTracks->Add(std::move(new1));
if (track2)
mCutPreviewTracks->Add(std::move(new2));
cutPreviewTracks->Add(std::move(new2));
}
}
if( !track1 )
ClearCutPreviewTracks();
if( track1 )
mCutPreviewTracks = cutPreviewTracks;
}
}