Correct synchronisation error

Correct error checking logic that would otherwise prevent group 0 from
being synchronised.


git-svn-id: http://svn.cactuscode.org/arrangements/CactusPUGH/PUGH/trunk@508 b61c5cb5-eaca-4651-9a7a-d64986f99364

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Comm.c b/src/Comm.c
index 68e8fa7..792882e 100644
--- a/src/Comm.c
+++ b/src/Comm.c
@@ -164,7 +164,7 @@ int PUGH_SyncGroupsByDirI(const cGH *GH,
 #endif
 
     first_var = CCTK_FirstVarIndexI (groups[group]);
-    if (first_var > 0 && PUGH_SyncGArrayGroup (pughGH, first_var) == 0)
+    if (first_var >= 0 && PUGH_SyncGArrayGroup (pughGH, first_var) == 0)
     {
       retval++;
     }