Fix some narrowing warnings on LP64/LLP64 platforms.

Add a ND_BYTES_AVAILABLE_AFTER() macro to find the number of bytes
available in the captured data, starting at the byte pointed to by the
argument.  It returns a u_int rather than a ptrdiff_t, so it'll be
32 bits on LP64 and LLP64 platforms as well as on ILP32 platforms.  Use
that macro.

Make size-of-buffer arguments size_t.

Cast some size_t and ptrdiff_t values to u_int or int.

1 files changed, 1 insertions, 1 deletions

diff --git a/print-lisp.c b/print-lisp.c
index a7d088d4..5c6825ae 100644
--- a/print-lisp.c
+++ b/print-lisp.c
@@ -381,7 +381,7 @@ lisp_print(netdissect_options *ndo, const u_char *bp, u_int length)
 		/* Check if packet isn't over yet */
 		if (packet_iterator + packet_offset < ndo->ndo_snapend) {
 			hex_print_with_offset(ndo, "\n    Data: ", packet_iterator + packet_offset,
-				(ndo->ndo_snapend - (packet_iterator + packet_offset)), 0);
+				ND_BYTES_AVAILABLE_AFTER(packet_iterator + packet_offset), 0);
 		}
 	}
 	return;