[GNUnet-SVN] r13472 - gnunet/src/core

[gnunet]

Author: amatus
Date: 2010-10-31 02:46:15 +0100 (Sun, 31 Oct 2010)
New Revision: 13472

Modified:
   gnunet/src/core/gnunet-service-core.c
Log:
Shifting more than the size of the integer is undefined.


Modified: gnunet/src/core/gnunet-service-core.c
===================================================================
--- gnunet/src/core/gnunet-service-core.c       2010-10-29 20:18:06 UTC (rev 
13471)
+++ gnunet/src/core/gnunet-service-core.c       2010-10-31 01:46:15 UTC (rev 
13472)
@@ -3511,7 +3511,11 @@
     }
   if (n->last_sequence_number_received < snum)
     {
-      n->last_packets_bitmap <<= (snum - n->last_sequence_number_received);
+      int shift = (snum - n->last_sequence_number_received);
+      if (shift >= 8 * sizeof(n->last_packets_bitmap))
+        n->last_packets_bitmap = 0;
+      else
+        n->last_packets_bitmap <<= shift;
       n->last_sequence_number_received = snum;
     }