| author | sandman <sandman> | 2002-10-31 03:11:34 (UTC) |
|---|---|---|
| committer | sandman <sandman> | 2002-10-31 03:11:34 (UTC) |
| commit | d4c2baf3d4998001462ac1be04523b216da02500 (patch) (side-by-side diff) | |
| tree | d017a5598492e631988786fb50d45cfde34c9aec | |
| parent | d9d6cc6b3a537439affc8095dedd046c86f09d9e (diff) | |
| download | opie-d4c2baf3d4998001462ac1be04523b216da02500.zip opie-d4c2baf3d4998001462ac1be04523b216da02500.tar.gz opie-d4c2baf3d4998001462ac1be04523b216da02500.tar.bz2 | |
added a sanity check to avoid a division by 0 in case the config file
contains bad data
| -rw-r--r-- | core/launcher/screensaver.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/core/launcher/screensaver.cpp b/core/launcher/screensaver.cpp index 45da9ed..088ed19 100644 --- a/core/launcher/screensaver.cpp +++ b/core/launcher/screensaver.cpp @@ -187,8 +187,10 @@ void OpieScreenSaver::setBacklight ( int bright ) for ( uint i = 0; i < LS_Count; i++ ) { if ( i < sl. count ( )) m_sensordata [i] = sl [i]. toInt ( ); } + if ( m_sensordata [LS_Steps] < 2 ) // sanity check to avoid SIGFPE + m_sensordata [LS_Steps] = 2; timerEvent ( 0 ); startTimer ( m_sensordata [LS_Interval] ); } @@ -232,9 +234,9 @@ void OpieScreenSaver::timerEvent ( QTimerEvent * ) else { int dx = m_sensordata [LS_SensorMax] - m_sensordata [LS_SensorMin]; int dy = m_sensordata [LS_LightMax] - m_sensordata [LS_LightMin]; - int stepno = ( s - m_sensordata [LS_SensorMin] ) * m_sensordata [LS_Steps] / dx; + int stepno = ( s - m_sensordata [LS_SensorMin] ) * m_sensordata [LS_Steps] / dx; // dx is never 0 m_backlight_sensor = m_sensordata [LS_LightMax] - dy * stepno / ( m_sensordata [LS_Steps] - 1 ); } if ( !m_backlight_sensor ) |