From f3a9e54c09829cec51062ebb754545c79370ddfe Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Wed, 4 Dec 2019 21:49:17 +0100
Subject: proj_grid_info(): fix crash when passing a file that exists but is
 not a grid

---
 src/4D_api.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/4D_api.cpp')

diff --git a/src/4D_api.cpp b/src/4D_api.cpp
index 26e9456e..f37594b5 100644
--- a/src/4D_api.cpp
+++ b/src/4D_api.cpp
@@ -1557,7 +1557,7 @@ PJ_GRID_INFO proj_grid_info(const char *gridname) {
     memset(&grinfo, 0, sizeof(PJ_GRID_INFO));
 
     /* in case the grid wasn't found */
-    if (gridinfo->filename == nullptr) {
+    if (gridinfo->filename == nullptr || gridinfo->ct == nullptr) {
         pj_gridinfo_free(ctx, gridinfo);
         strcpy(grinfo.format, "missing");
         return grinfo;
-- 
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