From 3d082689d468828e62f101c9755c8d42202a0ea1 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Wed, 11 Sep 2019 17:43:38 +0200
Subject: DatabaseContext::lookForGridInfo(): avoid setting PROJ context errno.
 Fixes issue with test/gigs/5208.gie with previous commit when ntf_r93.gsb
 grid is not available

---
 src/iso19111/factory.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/iso19111/factory.cpp')

diff --git a/src/iso19111/factory.cpp b/src/iso19111/factory.cpp
index 3ed69ae9..9ecc0906 100644
--- a/src/iso19111/factory.cpp
+++ b/src/iso19111/factory.cpp
@@ -1000,9 +1000,11 @@ bool DatabaseContext::lookForGridInfo(const std::string &projFilename,
     if (d->pjCtxt() == nullptr) {
         d->setPjCtxt(pj_get_default_ctx());
     }
+    int errno_before = proj_context_errno(d->pjCtxt());
     gridAvailable =
         pj_find_file(d->pjCtxt(), projFilename.c_str(), &fullFilename[0],
                      fullFilename.size() - 1) != 0;
+    proj_context_errno_set(d->pjCtxt(), errno_before);
     fullFilename.resize(strlen(fullFilename.c_str()));
 
     auto res =
-- 
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