PJ_ob_tran: avoid null pointer dereference when underling fwd method …

…is NULL. Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3645. Credit to OSS Fuzz
OSGeo · Nov 11, 2017 · fd1700e · fd1700e
1 parent d53581a
commit fd1700e
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/PJ_ob_tran.c b/src/PJ_ob_tran.c
@@ -228,10 +228,10 @@ PJ *PROJECTION(ob_tran) {
     if (fabs(phip) > TOL) { /* oblique */
         Q->cphip = cos(phip);
         Q->sphip = sin(phip);
-        P->fwd = o_forward;
+        P->fwd = Q->link->fwd ? o_forward : 0;
         P->inv = Q->link->inv ? o_inverse : 0;
     } else { /* transverse */
-        P->fwd = t_forward;
+        P->fwd = Q->link->fwd ? t_forward : 0;
         P->inv = Q->link->inv ? t_inverse : 0;
     }