add assert() that ghost zone ptr is non-NULL before using it

git-svn-id: http://svn.einsteintoolkit.org/cactus/EinsteinAnalysis/AHFinderDirect/trunk@420 f88db872-0e4f-0410-b76b-b9085cfa78c5

1 files changed, 16 insertions, 4 deletions

diff --git a/src/patch/patch.hh b/src/patch/patch.hh
index f5d906c..338acf7 100644
--- a/src/patch/patch.hh
+++ b/src/patch/patch.hh
@@ -274,13 +274,25 @@ public:
 	//
 public:
 	ghost_zone& min_rho_ghost_zone() const
-		{ return *min_rho_ghost_zone_; }
+		{
+		assert(min_rho_ghost_zone_ != NULL);
+		return *min_rho_ghost_zone_;
+		}
 	ghost_zone& max_rho_ghost_zone() const
-		{ return *max_rho_ghost_zone_; }
+		{
+		assert(max_rho_ghost_zone_ != NULL);
+		return *max_rho_ghost_zone_;
+		}
 	ghost_zone& min_sigma_ghost_zone() const
-		{ return *min_sigma_ghost_zone_; }
+		{
+		assert(min_sigma_ghost_zone_ != NULL);
+		return *min_sigma_ghost_zone_;
+		}
 	ghost_zone& max_sigma_ghost_zone() const
-		{ return *max_sigma_ghost_zone_; }
+		{
+		assert(max_sigma_ghost_zone_ != NULL);
+		return *max_sigma_ghost_zone_;
+		}
 	ghost_zone& minmax_ang_ghost_zone(bool want_min, bool want_rho) const;
 	ghost_zone& ghost_zone_on_edge(const patch_edge &edge) const;