X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Flib%2Fnet%2Fdhv%2FDhvSummaryP.nc;h=eb97dd409d0e4ef57783d48fcf6ddb77cbda70ab;hb=7542749c8e3ad47bb6995ba87be8810101418b0b;hp=0902f13a57259a310bd9ea945b3a9e7e93884b70;hpb=58054fb3635f80675eaaafcb0f15703294ed7dc6;p=tinyos-2.x.git

diff --git a/tos/lib/net/dhv/DhvSummaryP.nc b/tos/lib/net/dhv/DhvSummaryP.nc
index 0902f13a..eb97dd40 100755
--- a/tos/lib/net/dhv/DhvSummaryP.nc
+++ b/tos/lib/net/dhv/DhvSummaryP.nc
@@ -42,6 +42,9 @@ implementation {
     dhv_summary_msg_t* dsmsg;
 
     dmsg = (dhv_msg_t*) call SummarySend.getPayloadPtr();
+    if(dmsg == NULL)
+        return FAIL;
+
     dmsg->type = ID_DHV_SUMMARY;
     dsmsg = (dhv_summary_msg_t*) dmsg->content;