wiringpi: much implementation, now it links

[chiark-tcl.git] / hbytes / chop.c

diff --git a/hbytes/chop.c b/hbytes/chop.c
index 3e48569ff63bfa343b8984d09a385ba6c7a91338..3a172012520571e4120a7849dbc6d96b586877ef 100644 (file)
--- a/hbytes/chop.c
+++ b/hbytes/chop.c
@@ -1,6 +1,6 @@
 /*
  * hbytes - hex-stringrep efficient byteblocks for Tcl
- * 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
@@ -13,22 +13,22 @@
  * 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_hbytes.h"
 
 static int strs1(Tcl_Interp *ip, int strc, Tcl_Obj *const *strv, int *l_r) {
-  int rc, l, i;
+  int rc, l, i, pl;
 
   l= 0;
   for (i=1; i<strc; i++) {
     rc= Tcl_ConvertToType(ip,strv[i],&cht_hbytes_type);
     if (rc) return rc;
-    l += cht_hb_len(OBJ_HBYTES(strv[i]));
+    pl= cht_hb_len(OBJ_HBYTES(strv[i]));
+    assert(l < INT_MAX/2 && pl < INT_MAX/2);
+    l += pl;
   }
   *l_r= l;
   return TCL_OK;