Allow passing null pointers for the arrays if the processor-local

array extent is zero.


git-svn-id: http://svn.cactuscode.org/arrangements/CactusNumerical/Slab/trunk@16 2e825fa2-fb71-486d-8b7f-a5ff3f0f6cb8

1 files changed, 5 insertions, 2 deletions

diff --git a/src/slab.c b/src/slab.c
index 026b002..ee45b77 100644
--- a/src/slab.c
+++ b/src/slab.c
@@ -582,9 +582,9 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
   assert (dim >= 0);
   assert (xferinfo);
   assert (srctype >= 0);
-  assert (srcptr);
+/*   assert (srcptr); */
   assert (dsttype >= 0);
-  assert (dstptr);
+/*   assert (dstptr); */
   
   assert (dim <= SLAB_MAXDIM);
   info = malloc (SLAB_MAXDIM * sizeof *info);
@@ -643,6 +643,9 @@ int Slab_Transfer (cGH                   * restrict const cctkGH,
     dstlentot *= info[d].dst.local.len;
   }
   
+  if (srclentot > 0) assert (srcptr);
+  if (dstlentot > 0) assert (dstptr);
+  
   
   
   comm = get_mpi_comm (cctkGH);