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Fix null pointer deref crash, reported by Leland.

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This commit is contained in:
v.audacity 2011-11-03 22:19:50 +00:00
parent 4038f214cd
commit 0f74ce22c9
1 changed files with 6 additions and 2 deletions
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8
src/TrackPanel.cpp
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@ -3532,8 +3532,8 @@ void TrackPanel::HandleSampleEditingClick( wxMouseEvent & event )
//Get the track the mouse is over, and save it away for future events
mDrawingTrack = NULL;
t = FindTrack(event.m_x, event.m_y, false, false, &r);
if( t->GetKind() != Track::Wave )
if (!t || (t->GetKind() != Track::Wave))
return;
if( !IsSampleEditingPossible( event, t ) )
@ -5258,6 +5258,7 @@ bool TrackPanel::HitTestStretch(Track *track, wxRect &r, wxMouseEvent & event)
/// envelope boundary.
bool TrackPanel::HitTestEnvelope(Track *track, wxRect &r, wxMouseEvent & event)
{
wxASSERT(track);
if( track->GetKind() != Track::Wave )
return false;
WaveTrack *wavetrack = (WaveTrack *)track;
@ -5323,6 +5324,7 @@ bool TrackPanel::HitTestEnvelope(Track *track, wxRect &r, wxMouseEvent & event)
/// editable sample
bool TrackPanel::HitTestSamples(Track *track, wxRect &r, wxMouseEvent & event)
{
wxASSERT(track);
if( track->GetKind() != Track::Wave )
return false;
@ -6554,6 +6556,7 @@ void TrackPanel::OnTrackPanRight()
void TrackPanel::SetTrackPan(Track * t, LWSlider * s)
{
wxASSERT(t);
if( t->GetKind() != Track::Wave )
return;
float newValue = s->Get();
@ -6608,6 +6611,7 @@ void TrackPanel::OnTrackGainDec()
void TrackPanel::SetTrackGain(Track * t, LWSlider * s)
{
wxASSERT(t);
if( t->GetKind() != Track::Wave )
return ;
float newValue = s->Get();