X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=base%2Fscriptinv.c;h=7b67d299af4af002a076ba79e480188635c3345e;hb=c6f18281927becb769ab2ad2bc198b25f5e660b0;hp=5757d47b52f9ef8549a577ee29f76b7d2a050f78;hpb=5dca360f2da544c9b6baf9d18ad8cd0b0e073e60;p=chiark-tcl.git

diff --git a/base/scriptinv.c b/base/scriptinv.c
index 5757d47..7b67d29 100644
--- a/base/scriptinv.c
+++ b/base/scriptinv.c
@@ -1,6 +1,6 @@
 /*
  * base code for various Tcl extensions
- * Copyright 2006 Ian Jackson
+ * Copyright 2006-2012 Ian Jackson
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -13,9 +13,7 @@
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301, USA.
+ * along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "chiark-tcl-base.h"
@@ -45,6 +43,7 @@ int cht_scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip,
   if (xargs) {
     rc= Tcl_ListObjLength(ip, xargs, &xlength);  if (rc) return rc;
     Tcl_IncrRefCount(xargs);
+    assert(si->llen < INT_MAX/2 && xlength < INT_MAX/2);
     si->llen += xlength;
   }