X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=regress%2Fhcommon.c;h=301fb2f53446fd2596c42b2e14b6b03ad8e8e258;hb=f80690def49ab15ee32f01aaa3d2577807fef4ce;hp=e63a8cda57a0b30d40aefdc87c7bb5f46ef64e06;hpb=d8fa191ed7774818862febd6ade774cb7e149ab9;p=adns.git

diff --git a/regress/hcommon.c b/regress/hcommon.c
index e63a8cd..301fb2f 100644
--- a/regress/hcommon.c
+++ b/regress/hcommon.c
@@ -167,6 +167,10 @@ void Tvbbytes(const void *buf, int len) {
 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;