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Don't crash peeking at a zero-sized queue

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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2013-06-26 16:47:43 +10:00
parent 7bb8e339ca
commit 70c17eac01
1 changed files with 1 additions and 1 deletions
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2
libevdev/libevdev-int.h
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@ -121,7 +121,7 @@ queue_pop(struct libevdev *dev, struct input_event *ev)
static inline int static inline int
queue_peek(struct libevdev *dev, size_t idx, struct input_event *ev) queue_peek(struct libevdev *dev, size_t idx, struct input_event *ev)
{ {
if (idx > dev->queue_next) if (dev->queue_next == 0 || idx > dev->queue_next)
return 1; return 1;
*ev = dev->queue[idx]; *ev = dev->queue[idx];
return 0; return 0;