tuntap: Do not build on non-Linux platforms.

[chiark-tcl.git] / base / idtable.c

diff --git a/base/idtable.c b/base/idtable.c
index 554f9992a15ce116317b28f493acabdf93460ab8..6e7aafaa1562c94b8f16398acc4a6acfb42622cc 100644 (file)
--- a/base/idtable.c
+++ b/base/idtable.c
@@ -1,4 +1,19 @@
 /*
+ * base code for various Tcl extensions
+ * 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
+ * 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, see <http://www.gnu.org/licenses/>.
  */
 
 #include "chiark-tcl-base.h"
@@ -62,14 +77,12 @@ int cht_tabledataid_parse(Tcl_Interp *ip, Tcl_Obj *o, const IdDataSpec *idds) {
   int l;
   unsigned long ul;
   IdDataValue *dv;
-  IdDataAssocData *assoc;
   char *ep, *str;
 
   if (o->typePtr != &cht_tabledataid_nearlytype) goto convert;
 
   dv= o->internalRep.otherValuePtr;
   if (dv->interp != ip) goto convert;
-  assoc= dv->assoc;
   if (dv->assoc->idds != idds) goto convert;
 
   return TCL_OK;
@@ -130,6 +143,7 @@ Tcl_Obj *cht_ret_iddata(Tcl_Interp *ip, void *val, const IdDataSpec *idds) {
   if (ix==-1) {
     for (ix=0; ix<assoc->n && assoc->a[ix]; ix++);
     if (ix>=assoc->n) {
+      assert(assoc->n < INT_MAX/4);
       assoc->n += 2;
       assoc->n *= 2;
       assoc->a= TREALLOC(assoc->a, assoc->n*sizeof(*assoc->a));