X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;ds=sidebyside;f=base%2Fscriptinv.c;h=26d5030f762ed6fd62c5e16eaebd8c17f9403ccc;hb=ceed4cf646a34245b3bc88089a2187ebf7a41f0f;hp=a066572c2873ecc3edff403574c8f6cc2a89f350;hpb=f16e3e0cf0a2b965643df01e24ef59e1393da78d;p=chiark-tcl.git

diff --git a/base/scriptinv.c b/base/scriptinv.c
index a066572..26d5030 100644
--- a/base/scriptinv.c
+++ b/base/scriptinv.c
@@ -1,4 +1,21 @@
 /*
+ * base code for various Tcl extensions
+ * Copyright 2006 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
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 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.
  */
 
 #include "chiark-tcl-base.h"
@@ -28,6 +45,7 @@ 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;
   }