X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altoslib%2FAltosHexfile.java;h=f2ab4bead5c3883dd8cd1e16d5020b8cf63eb484;hb=cc83d57454ed07e4828b4413e5af6ae2ecfe2e5a;hp=6aa98383e9fc38d92d93b928a97d4990c6fc8258;hpb=ee79a205e118ea8730a02cc327d8fb79cc5f74ff;p=fw%2Faltos

diff --git a/altoslib/AltosHexfile.java b/altoslib/AltosHexfile.java
index 6aa98383..f2ab4bea 100644
--- a/altoslib/AltosHexfile.java
+++ b/altoslib/AltosHexfile.java
@@ -294,15 +294,19 @@ public class AltosHexfile {
 		if (usb_descriptors == null)
 			return -1;
 
-		/* Walk the descriptors looking for the device */
-		a = usb_descriptors.address;
-		while (get_u8(a+1) != AO_USB_DESC_DEVICE) {
-			int delta = get_u8(a);
-			a += delta;
-			if (delta == 0 || a >= max_address)
-				return -1;
+		try {
+			/* Walk the descriptors looking for the device */
+			a = usb_descriptors.address;
+			while (get_u8(a+1) != AO_USB_DESC_DEVICE) {
+				int delta = get_u8(a);
+				a += delta;
+				if (delta == 0 || a >= max_address)
+					return -1;
+			}
+			return a;
+		} catch (ArrayIndexOutOfBoundsException ae) {
+			return -1;
 		}
-		return a;
 	}
 
 	public AltosUsbId find_usb_id() {