Try marking structures as UNALIGNED.

[tcpdump] / tcpdump.c

diff --git a/tcpdump.c b/tcpdump.c
index 270f79b4b92658d2188727f8b475b8ecc395e1ca..053dd5401999ffbc9c6364a4636aa2b9d92c410b 100644 (file)
--- a/tcpdump.c
+++ b/tcpdump.c
@@ -1724,20 +1724,21 @@ main(int argc, char **argv)
                         * Find the list of interfaces, and pick
                         * the first interface.
                         */
-                       if (pcap_findalldevs(&devlist, ebuf) >= 0 &&
-                           devlist != NULL) {
-                               device = strdup(devlist->name);
-                               pcap_freealldevs(devlist);
-                       }
+                       if (pcap_findalldevs(&devlist, ebuf) == -1)
+                               error("%s", ebuf);
+                       if (devlist == NULL)
+                               error("no interfaces available for capture");
+                       device = strdup(devlist->name);
+                       pcap_freealldevs(devlist);
 #else /* HAVE_PCAP_FINDALLDEVS */
                        /*
                         * Use whatever interface pcap_lookupdev()
                         * chooses.
                         */
                        device = pcap_lookupdev(ebuf);
-#endif
                        if (device == NULL)
                                error("%s", ebuf);
+#endif
                }
 
                /*