Allow to apply the symmetries to 0 variables. In this case, just

return.


git-svn-id: http://svn.cactuscode.org/arrangements/CactusNumerical/RotatingSymmetry90/trunk@21 c3c03602-0f4f-0410-b3fa-d2c81c8a7dc5

1 files changed, 3 insertions, 0 deletions

diff --git a/src/rotatingsymmetry90.c b/src/rotatingsymmetry90.c
index e797cac..e71c643 100644
--- a/src/rotatingsymmetry90.c
+++ b/src/rotatingsymmetry90.c
@@ -120,6 +120,9 @@ int BndRot90VI (cGH const * restrict const cctkGH,
     }
   }
   
+  /* Return early if there is nothing to do */
+  if (nvars == 0) return 0;
+  
   /* Get and check group info */
   assert (nvars>0);
   gis = malloc (nvars * sizeof *gis);