From bdb02c7c5a36d501b8c856dee539a5f28db2c36f Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Tue, 23 May 2017 22:28:43 +0200
Subject: pj_transform(): fix segfault when z == NULL and dest defn has a fwd3d

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1794

Credit to OSS Fuzz
---
 src/pj_transform.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src')

diff --git a/src/pj_transform.c b/src/pj_transform.c
index 212d8842..f566fcfc 100644
--- a/src/pj_transform.c
+++ b/src/pj_transform.c
@@ -344,6 +344,13 @@ int pj_transform( PJ *srcdefn, PJ *dstdefn, long point_count, int point_offset,
 
         if( dstdefn->fwd3d != NULL)
         {
+            /* Three dimensions must be defined */
+            if ( z == NULL)
+            {
+                pj_ctx_set_errno( pj_get_ctx(dstdefn), PJD_ERR_GEOCENTRIC);
+                return PJD_ERR_GEOCENTRIC;
+            }
+
             for( i = 0; i < point_count; i++ )
             {
                 XYZ projected_loc;
-- 
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