From: Guy Harris <gharris@sonic.net>
Date: Wed, 27 May 2020 09:28:20 +0000 (-0700)
Subject: esis: explain why we're doing ND_TTEST_LEN(pptr, 1).
X-Git-Tag: tcpdump-4.99-bp~364
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/228f225ca02da1ee61f169301cfa73c56a8265cf

esis: explain why we're doing ND_TTEST_LEN(pptr, 1).
---

diff --git a/print-isoclns.c b/print-isoclns.c
index 3859c8ff..9e83e613 100644
--- a/print-isoclns.c
+++ b/print-isoclns.c
@@ -1382,6 +1382,10 @@ esis_print(netdissect_options *ndo,
 
 	default:
 		if (ndo->ndo_vflag <= 1) {
+			/*
+			 * If there's at least one byte to print, print
+			 * it/them.
+			 */
 			if (ND_TTEST_LEN(pptr, 1))
 				print_unknown_data(ndo, pptr, "\n\t  ", ND_BYTES_AVAILABLE_AFTER(pptr));
 		}