svn commit: r255891 - head/lib/libedit

[Xin LI]

Author: delphij
Date: Thu Sep 26 17:54:58 2013
New Revision: 255891
URL: http://svnweb.freebsd.org/changeset/base/255891

Log:
  Import NetBSD readline.c,v 1.104: do not crash with add_history(NULL).
  
  MFC after:	3 days
  Approved by:	re (gjb)

Modified:
  head/lib/libedit/readline.c

Modified: head/lib/libedit/readline.c
==============================================================================
--- head/lib/libedit/readline.c	Thu Sep 26 16:25:06 2013	(r255890)
+++ head/lib/libedit/readline.c	Thu Sep 26 17:54:58 2013	(r255891)
@@ -1363,6 +1363,9 @@ add_history(const char *line)
 	TYPE(HistEvent) ev;
 	const Char *wline;
 
+	if (line == NULL)
+		return 0;
+
 	if (h == NULL || e == NULL)
 		rl_initialize();