From 91d23e65ace9872a785f66db756d77e01381556f Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Tue, 17 Sep 2019 19:53:13 +0200
Subject: eqdc: avoid potential division by zero. Fixes
 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17190

---
 src/projections/eqdc.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/projections/eqdc.cpp')

diff --git a/src/projections/eqdc.cpp b/src/projections/eqdc.cpp
index e050a593..00aacfda 100644
--- a/src/projections/eqdc.cpp
+++ b/src/projections/eqdc.cpp
@@ -117,6 +117,8 @@ PJ *PROJECTION(eqdc) {
     } else {
         if (secant)
             Q->n = (cosphi - cos(Q->phi2)) / (Q->phi2 - Q->phi1);
+        if (Q->n == 0)
+            return destructor (P, PJD_ERR_CONIC_LAT_EQUAL);
         Q->c = Q->phi1 + cos(Q->phi1) / Q->n;
         Q->rho0 = Q->c - P->phi0;
     }
-- 
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