copyright dates

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

diff --git a/hbytes/hbytes.c b/hbytes/hbytes.c
index 5daecd1c5038437357fb896f1bd9d4e4b9044005..f9c02a75f8e7279def7743010f27720017eb282f 100644 (file)
--- a/hbytes/hbytes.c
+++ b/hbytes/hbytes.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
@@ -98,6 +98,8 @@ Byte *cht_hb_prepend(HBytes_Value *hb, int el) {
   Byte *old_block, *new_block, *new_dstart;
 
   cx= complex(hb);
+
+  assert(el < INT_MAX/4 && cx->len < INT_MAX/2);
   
   if (cx->prespace < el) {
     new_prespace= el*2 + cx->len;
@@ -121,6 +123,7 @@ Byte *cht_hb_append(HBytes_Value *hb, int el) {
   Byte *newpart, *new_block, *old_block;
 
   cx= complex(hb);
+  assert(el < INT_MAX/4 && cx->len < INT_MAX/4);
 
   new_len= cx->len + el;
   if (new_len > cx->avail) {