From 558b8d339587991d32d77cfd338a0e8b2177aa57 Mon Sep 17 00:00:00 2001
From: Mario Baranzini <mario@opengis.ch>
Date: Sun, 6 Aug 2017 21:40:12 +0200
Subject: [PATCH] Protect processing parameters from segfault

---
 src/core/processing/qgsprocessingparameters.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/processing/qgsprocessingparameters.cpp b/src/core/processing/qgsprocessingparameters.cpp
index e60a04024bfa..2a108aeb3111 100644
--- a/src/core/processing/qgsprocessingparameters.cpp
+++ b/src/core/processing/qgsprocessingparameters.cpp
@@ -391,7 +391,7 @@ QString QgsProcessingParameters::parameterAsOutputLayer( const QgsProcessingPara
   {
     dest = val.value< QgsProperty >().valueAsString( context.expressionContext(), definition->defaultValue().toString() );
   }
-  else if ( !val.isValid() || val.toString().isEmpty() )
+  else if ( definition && ( !val.isValid() || val.toString().isEmpty() ) )
   {
     // fall back to default
     dest = definition->defaultValue().toString();