From 09196004812cdc0ac6aa2329e314a7e7bf6d6256 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 10 May 2003 13:30:26 +0000
Subject: [PATCH] (main): Test for the case of no arguments before computing
 n_files.

---
 src/tail.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/tail.c b/src/tail.c
index e69470c24..c91b8d83f 100644
--- a/src/tail.c
+++ b/src/tail.c
@@ -1624,10 +1624,13 @@ main (int argc, char **argv)
 	--n_units;
     }
 
-  n_files = argc - optind;
-  file = argv + optind;
 
-  if (n_files == 0)
+  if (optind < argc)
+    {
+      n_files = argc - optind;
+      file = argv + optind;
+    }
+  else
     {
       static char *dummy_stdin = "-";
       n_files = 1;
-- 
2.34.1