Allow realloc to return NULL for a zero-sized request

git-svn-id: http://svn.cactuscode.org/arrangements/CactusPUGH/PUGH/trunk@463 b61c5cb5-eaca-4651-9a7a-d64986f99364

1 files changed, 1 insertions, 1 deletions

diff --git a/src/SetupGroup.c b/src/SetupGroup.c
index bb0b640..26f3be4 100644
--- a/src/SetupGroup.c
+++ b/src/SetupGroup.c
@@ -186,7 +186,7 @@ static int PUGH_SetupGAGroup (pGH *newGH,
 
   temp = realloc (newGH->variables, (newGH->nvariables+n_variables) *
                                     sizeof (void **));
-  if(temp)
+  if(newGH->nvariables+n_variables==0 || temp)
   {
     newGH->variables = temp;