CarpetReduce: handle the case of zero reductions

When there are zero reductions, allow the output pointers to be NULL.

darcs-hash:20050430154439-891bb-95ea930518b19378040601526504ceb6be039a97.gz

1 files changed, 6 insertions, 6 deletions

diff --git a/Carpet/CarpetReduce/src/reduce.cc b/Carpet/CarpetReduce/src/reduce.cc
index fa46cba07..f51dda6ca 100644
--- a/Carpet/CarpetReduce/src/reduce.cc
+++ b/Carpet/CarpetReduce/src/reduce.cc
@@ -471,8 +471,8 @@ namespace CarpetReduce {
     const int vartypesize = CCTK_VarTypeSize(outtype);
     assert (vartypesize>=0);
     
-    assert (myoutvals);
-    assert (mycounts);
+    assert (num_outvals==0 || myoutvals);
+    assert (num_outvals==0 || mycounts);
     
     assert (red);
     
@@ -539,8 +539,8 @@ namespace CarpetReduce {
       assert (inarrays[n]);
     }
     
-    assert (myoutvals);
-    assert (mycounts);
+    assert (num_outvals==0 || myoutvals);
+    assert (num_outvals==0 || mycounts);
     
     assert (outtype == intype);
     
@@ -680,8 +680,8 @@ namespace CarpetReduce {
     const int vartypesize = CCTK_VarTypeSize(outtype);
     assert (vartypesize>=0);
     
-    assert (myoutvals);
-    assert (mycounts);
+    assert (num_outvals==0 || myoutvals);
+    assert (num_outvals==0 || mycounts);
     
     vector<char> counts;
     if (proc==-1 || proc==CCTK_MyProc(cgh)) {