tp_mac and tp_snaplen are unsigned; print them with %u, not %d.

See, for example, GitHub libpcap issue #404.

diff --git a/pcap-linux.c b/pcap-linux.c
index 9fddadb6cf567ee9fa943ee605be465c9144d63d..6fb2be1cd8b8d6d3d22bcb279a384a55dbe9e909 100644 (file)
--- a/pcap-linux.c
+++ b/pcap-linux.c
@@ -3980,7 +3980,7 @@ pcap_read_linux_mmap(pcap_t *handle, int max_packets, pcap_handler callback,
                if (tp_mac + tp_snaplen > handle->bufsize) {
                        snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, 
                                "corrupted frame on kernel ring mac "
-                               "offset %d + caplen %d > frame len %d", 
+                               "offset %u + caplen %u > frame len %d", 
                                tp_mac, tp_snaplen, handle->bufsize);
                        return -1;
                }