[bugfix][postgresql] Fix crashes on featureCount()

elpaso · elpaso · commit fe5653101a57 · 2017-11-10T16:32:50.000+01:00
Fixes #17388 Needs backporting
diff --git a/src/providers/postgres/qgspostgresprovider.cpp b/src/providers/postgres/qgspostgresprovider.cpp
@@ -3098,6 +3098,12 @@ long QgsPostgresProvider::featureCount() const
   if ( featuresCounted >= 0 )
     return featuresCounted;
 
+  // See: https://issues.qgis.org/issues/17388 - QGIS crashes on featureCount())
+  if ( ! connectionRO() )
+  {
+    return 0;
+  }
+
   // get total number of features
   QString sql;
 
