X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=regress%2Fhcommon.c.m4;h=760ca0c0bbd4fdd84704b643ab329baa0912b2f8;hb=f80690def49ab15ee32f01aaa3d2577807fef4ce;hp=7ca28c1952c5d2259cf07d5733bfce2d89285f4d;hpb=7f8bbe29436e29cc2683955d642f79a10d62f67d;p=adns.git

diff --git a/regress/hcommon.c.m4 b/regress/hcommon.c.m4
index 7ca28c1..760ca0c 100644
--- a/regress/hcommon.c.m4
+++ b/regress/hcommon.c.m4
@@ -3,7 +3,8 @@ m4_dnl (part of complex test harness, not of the library)
 m4_dnl - routines used for both record and playback
 
 m4_dnl  This file is part of adns, which is
-m4_dnl    Copyright (C) 1997-2000,2003,2006  Ian Jackson
+m4_dnl    Copyright (C) 1997-2000,2003,2006,2014  Ian Jackson
+m4_dnl    Copyright (C) 2014  Mark Wooding
 m4_dnl    Copyright (C) 1999-2000,2003,2006  Tony Finch
 m4_dnl    Copyright (C) 1991 Massachusetts Institute of Technology
 m4_dnl  (See the file INSTALL for full details.)
@@ -19,8 +20,7 @@ m4_dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 m4_dnl  GNU General Public License for more details.
 m4_dnl  
 m4_dnl  You should have received a copy of the GNU General Public License
-m4_dnl  along with this program; if not, write to the Free Software Foundation,
-m4_dnl  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
+m4_dnl  along with this program; if not, write to the Free Software Foundation.
 
 m4_include(hmacros.i4)
 
@@ -160,6 +160,11 @@ void Tvbfdset(int max, const fd_set *fds) {
   int i;
   const char *comma= "";
   
+  if (!fds) {
+    Tvba("null");
+    return;
+  }
+
   Tvba("[");
   for (i=0; i<max; i++) {
     if (!FD_ISSET(i,fds)) continue;
@@ -301,7 +306,7 @@ void *Hrealloc(void *op, size_t nsz) {
 
   if (op) { oldnode= (void*)((char*)op - MALLOCHSZ); osz= oldnode->sz; } else { osz= 0; }
   np= Hmalloc(nsz);
-  memcpy(np,op, osz>nsz ? nsz : osz);
+  if (osz) memcpy(np,op, osz>nsz ? nsz : osz);
   Hfree(op);
   return np;
 }