From: Jim Meyering <jim@meyering.net>
Date: Sun, 14 Jul 1996 22:24:28 +0000 (+0000)
Subject: (unexpand): Fix bug that contributed to endless loop
X-Git-Tag: TEXTUTILS-1_19b~179
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=178f23fbb719a46f16e4426615731984e77dfb14;p=thirdparty%2Fcoreutils.git

(unexpand): Fix bug that contributed to endless loop
when invoking `echo '  ' |unexpand -t 1,2': use print_tab_index, not
tab_index in inner flush_pend: while loop.  From Keith Owens
<kaos@audio.apana.org.au>.
---

diff --git a/src/unexpand.c b/src/unexpand.c
index 1fbda7fc8e..f5c91c00d5 100644
--- a/src/unexpand.c
+++ b/src/unexpand.c
@@ -290,10 +290,10 @@ unexpand (void)
 	    {
 	      if (tab_size == 0)
 		{
-		  /* Do not let tab_index == first_free_tab;
+		  /* Do not let print_tab_index == first_free_tab;
 		     stop when it is 1 less. */
-		  while (tab_index < first_free_tab - 1
-			 && column >= tab_list[tab_index])
+		  while (print_tab_index < first_free_tab - 1
+			 && column >= tab_list[print_tab_index])
 		    print_tab_index++;
 		  next_tab_column = tab_list[print_tab_index];
 		  if (print_tab_index < first_free_tab - 1)