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-rw-r--r--wear_touch.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/wear_touch.cpp b/wear_touch.cpp
index f22d40b88..51a1d31b2 100644
--- a/wear_touch.cpp
+++ b/wear_touch.cpp
@@ -122,7 +122,7 @@ void* WearSwipeDetector::touch_thread(void* cookie) {
return NULL;
}
-#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
+#define test_bit(bit, array) ((array)[(bit)/8] & (1<<((bit)%8)))
int WearSwipeDetector::openDevice(const char *device) {
int fd = open(device, O_RDONLY);