From 1b0c6fbc8b90522983b18772303ff517dec21cd5 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Mon, 22 Apr 2019 18:01:09 +0200
Subject: airy: avoid division by zero

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14410
Credit to OSS Fuzz
---
 src/projections/airy.cpp | 4 ++++
 1 file changed, 4 insertions(+)

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

diff --git a/src/projections/airy.cpp b/src/projections/airy.cpp
index f7068061..ba6a40ff 100644
--- a/src/projections/airy.cpp
+++ b/src/projections/airy.cpp
@@ -79,6 +79,10 @@ static PJ_XY s_forward (PJ_LP lp, PJ *P) {           /* Spheroidal, forward */
         }
         if (fabs(s = 1. - cosz) > EPS) {
             t = 0.5 * (1. + cosz);
+            if(t == 0) {
+                proj_errno_set(P, PJD_ERR_TOLERANCE_CONDITION);
+                return xy;
+            }
             Krho = -log(t)/s - Q->Cb / t;
         } else
             Krho = 0.5 - Q->Cb;
-- 
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