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dix: move bounds check before access 

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Simon Thum 2009-09-21 15:23:27 +02:00 committed by Peter Hutterer
parent 9edb9e9b4d
commit 824a09d856
1 changed files with 3 additions and 2 deletions
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5
dix/getevents.c
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@ -578,12 +578,13 @@ GetMaximumEventsNum(void) {
static void static void
clipAxis(DeviceIntPtr pDev, int axisNum, int *val) clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
{ {
AxisInfoPtr axis = pDev->valuator->axes + axisNum; AxisInfoPtr axis;
/* InitValuatoraAxisStruct ensures that (min < max). */
if (axisNum >= pDev->valuator->numAxes) if (axisNum >= pDev->valuator->numAxes)
return; return;
axis = pDev->valuator->axes + axisNum;
/* If a value range is defined, clip. If not, do nothing */ /* If a value range is defined, clip. If not, do nothing */
if (axis->max_value <= axis->min_value) if (axis->max_value <= axis->min_value)
return; return;