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-rw-r--r--klippy/stepcompress.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/klippy/stepcompress.c b/klippy/stepcompress.c
index 34b2a7d0..ca45a9b0 100644
--- a/klippy/stepcompress.c
+++ b/klippy/stepcompress.c
@@ -59,11 +59,11 @@ clean_queue(struct stepcompress *sc)
static void
expand_queue(struct stepcompress *sc, int count)
{
- if (sc->queue + count <= sc->queue_end) {
+ int alloc = sc->queue_end - sc->queue;
+ if (count + sc->queue_next - sc->queue_pos <= alloc) {
clean_queue(sc);
return;
}
- int alloc = sc->queue_end - sc->queue;
int pos = sc->queue_pos - sc->queue;
int next = sc->queue_next - sc->queue;
if (!alloc)