diff -r 96678f701d42 tools/libxc/xc_core.c
--- a/tools/libxc/xc_core.c	Mon Mar  6 11:12:48 2006 -0500
+++ b/tools/libxc/xc_core.c	Thu Mar  9 16:56:35 2006 -0500
@@ -54,7 +54,12 @@ xc_domain_dumpcore(int xc_handle,
         goto error_out;
     }
  
-    for (i = 0; i < info.max_vcpu_id; i++)
+   if (domid != info.domid) {
+        PERROR("Domain %d does not exist", domid);
+        goto error_out;
+    }
+
+    for (i = 0; i <= info.max_vcpu_id; i++)
         if (xc_vcpu_getcontext(xc_handle, domid,
                                        i, &ctxt[nr_vcpus]) == 0)
             nr_vcpus++;