CarpetLib: Handle first regridding correctly.

Do not require that regridding fills all grid points if the previous
grid hierarchy is completely empty, i.e, if this is the first
regridding.

darcs-hash:20070513034129-dae7b-7c838458c107d6873665eeb3e92d2a4c72565f30.gz

1 files changed, 5 insertions, 3 deletions

diff --git a/Carpet/CarpetLib/src/dh.cc b/Carpet/CarpetLib/src/dh.cc
index e95f12527..b96c1d899 100644
--- a/Carpet/CarpetLib/src/dh.cc
+++ b/Carpet/CarpetLib/src/dh.cc
@@ -826,9 +826,11 @@ regrid ()
           
         } // if rl > 0
         
-        // All points must now have been received, either through
-        // synchronisation or through prolongation
-        assert (needrecv.empty());
+        if (int (oldboxes.size()) > ml and int (oldboxes.AT(ml).size()) > 0) {
+          // All points must now have been received, either through
+          // synchronisation or through prolongation
+          assert (needrecv.empty());
+        }