# HG changeset patch
# User Jerry James <james@xemacs.org>
# Date 1417823773 25200
# Node ID e24390bd42354fa2947ebaa5adecd0dbacbed5de
# Parent  7984e732829e22395c87d8b0354f4140cbe67209
Fix off-by-one error in Ffile_truename.
See <CAHCOHQnOwYH5kF0mq6184Fetuus-KOeKNUpTHYXhq56AvcuE9A@mail.gmail.com>
in xemacs-patches.

diff -r 7984e732829e -r e24390bd4235 src/ChangeLog
--- a/src/ChangeLog	Fri Dec 05 16:22:57 2014 -0700
+++ b/src/ChangeLog	Fri Dec 05 16:56:13 2014 -0700
@@ -1,3 +1,7 @@
+2014-12-05  Jerry James  <james@xemacs.org>
+
+	* src/fileio.c (Ffile_truename): Fix off-by-one error.
+
 2014-11-23  Michael Sperber  <mike@xemacs.org>
 
 	* font-mgr.c (Ffc_name_unparse): Do the previous change to this
diff -r 7984e732829e -r e24390bd4235 src/fileio.c
--- a/src/fileio.c	Fri Dec 05 16:22:57 2014 -0700
+++ b/src/fileio.c	Fri Dec 05 16:56:13 2014 -0700
@@ -1466,7 +1466,7 @@
       if (elen > 0 && IS_DIRECTORY_SEP (string_byte (expanded_name, elen - 1))
           && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
 	{
-	  if (rlen + 1 > countof (resolved_path))
+	  if (rlen + 1 >= countof (resolved_path))
 	    goto toolong;
 	  resolved_path[rlen++] = DIRECTORY_SEP;
 	  resolved_path[rlen] = '\0';