From 70aebec863f63fdec7f86961dfa9b7924b9ab2dc Mon Sep 17 00:00:00 2001
From: PROJ-BOT <59655370+PROJ-BOT@users.noreply.github.com>
Date: Wed, 15 Apr 2020 00:17:56 +0200
Subject: Robinson inverse projection: error on out of domain values (fixes
 #2151)

---
 src/projections/robin.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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

diff --git a/src/projections/robin.cpp b/src/projections/robin.cpp
index 3c4d9f07..8b646502 100644
--- a/src/projections/robin.cpp
+++ b/src/projections/robin.cpp
@@ -142,6 +142,10 @@ static PJ_LP robin_s_inverse (PJ_XY xy, PJ *P) {           /* Spheroidal, invers
         lp.phi = (5 * i + t) * DEG_TO_RAD;
         if (xy.y < 0.) lp.phi = -lp.phi;
         lp.lam /= V(X[i], t);
+        if( fabs(lp.lam) > M_PI ) {
+            proj_errno_set(P, PJD_ERR_LAT_OR_LON_EXCEED_LIMIT);
+            lp = proj_coord_error().lp;
+        }
     }
     return lp;
 }
@@ -155,4 +159,3 @@ PJ *PROJECTION(robin) {
     return P;
 }
 
-
-- 
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