From 203729b88a7204e7d1e63991c882388ceb625c72 Mon Sep 17 00:00:00 2001
From: "Gary E. Miller" <gem@rellim.com>
Date: Sun, 6 May 2012 13:15:16 -0700
Subject: Fix a segfault in geoid computation. Problem found by: "Bywater, Rick
 (SA-1)" <rbywater@drs-ts.com> Patch by: Beat Bolli <bbolli@ewanet.ch>

---
 geoid.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/geoid.c b/geoid.c
index a0feaf45..f055b373 100644
--- a/geoid.c
+++ b/geoid.c
@@ -72,12 +72,9 @@ double wgs84_separation(double lat, double lon)
     ilon = (int)floor((180. + lon) / 10);
 
     /* sanity checks to prevent segfault on bad data */
-    if ((ilat > 90) || (ilat < -90)) {
-	return 0.0;
-    }
-    if ((ilon > 180) || (ilon < -180)) {
-	return 0.0;
-    }
+    if ((GEOID_ROW <= ilat) || (0 > ilat) ||
+        (GEOID_COL <= ilon) || (0 > ilon))
+        return 0.0;
 
     ilat1 = ilat;
     ilon1 = ilon;
-- 
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