Safer iterator closing, by always calling ::close() instead of

directly manipulating mClosed Fixes a crash in the memory data provider (also likely fixes issues in other providers)
qgis · Nov 19, 2017 · 6f3ebdee3c9e8574dfc2054e5438002d5cdb6ade · 6f3ebde
1 parent d6eb8ec
commit 6f3ebdee3c9e8574dfc2054e5438002d5cdb6ade
diff --git a/src/core/providers/memory/qgsmemoryfeatureiterator.cpp b/src/core/providers/memory/qgsmemoryfeatureiterator.cpp
@@ -39,7 +39,7 @@ QgsMemoryFeatureIterator::QgsMemoryFeatureIterator( QgsMemoryFeatureSource *sour
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/core/qgscachedfeatureiterator.cpp b/src/core/qgscachedfeatureiterator.cpp
@@ -32,7 +32,7 @@ QgsCachedFeatureIterator::QgsCachedFeatureIterator( QgsVectorLayerCache *vlCache
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
   if ( !mFilterRect.isNull() )
@@ -118,7 +118,7 @@ QgsCachedFeatureWriterIterator::QgsCachedFeatureWriterIterator( QgsVectorLayerCa
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
   if ( !mFilterRect.isNull() )

diff --git a/src/core/qgsvectorlayerfeatureiterator.cpp b/src/core/qgsvectorlayerfeatureiterator.cpp
@@ -124,7 +124,7 @@ QgsVectorLayerFeatureIterator::QgsVectorLayerFeatureIterator( QgsVectorLayerFeat
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
   if ( !mFilterRect.isNull() )

diff --git a/src/providers/arcgisrest/qgsafsfeatureiterator.cpp b/src/providers/arcgisrest/qgsafsfeatureiterator.cpp
@@ -50,7 +50,7 @@ QgsAfsFeatureIterator::QgsAfsFeatureIterator( QgsAfsFeatureSource *source, bool
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 }

diff --git a/src/providers/db2/qgsdb2featureiterator.cpp b/src/providers/db2/qgsdb2featureiterator.cpp
@@ -45,7 +45,7 @@ QgsDb2FeatureIterator::QgsDb2FeatureIterator( QgsDb2FeatureSource *source, bool
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/providers/delimitedtext/qgsdelimitedtextfeatureiterator.cpp b/src/providers/delimitedtext/qgsdelimitedtextfeatureiterator.cpp
@@ -50,7 +50,7 @@ QgsDelimitedTextFeatureIterator::QgsDelimitedTextFeatureIterator( QgsDelimitedTe
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/providers/gpx/qgsgpxfeatureiterator.cpp b/src/providers/gpx/qgsgpxfeatureiterator.cpp
@@ -40,7 +40,7 @@ QgsGPXFeatureIterator::QgsGPXFeatureIterator( QgsGPXFeatureSource *source, bool
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/providers/mssql/qgsmssqlfeatureiterator.cpp b/src/providers/mssql/qgsmssqlfeatureiterator.cpp
@@ -45,7 +45,7 @@ QgsMssqlFeatureIterator::QgsMssqlFeatureIterator( QgsMssqlFeatureSource *source,
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 
@@ -413,13 +413,7 @@ bool QgsMssqlFeatureIterator::rewind()
   if ( !result )
   {
     QgsDebugMsg( mQuery->lastError().text() );
-    mQuery.reset();
-    if ( mDatabase.isOpen() )
-      mDatabase.close();
-
-    iteratorClosed();
-
-    mClosed = true;
+    close();
     return false;
   }
 

diff --git a/src/providers/ogr/qgsogrfeatureiterator.cpp b/src/providers/ogr/qgsogrfeatureiterator.cpp
@@ -88,7 +88,7 @@ QgsOgrFeatureIterator::QgsOgrFeatureIterator( QgsOgrFeatureSource *source, bool
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/providers/virtual/qgsvirtuallayerfeatureiterator.cpp b/src/providers/virtual/qgsvirtuallayerfeatureiterator.cpp
@@ -54,7 +54,7 @@ QgsVirtualLayerFeatureIterator::QgsVirtualLayerFeatureIterator( QgsVirtualLayerF
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }
 

diff --git a/src/providers/wfs/qgswfsfeatureiterator.cpp b/src/providers/wfs/qgswfsfeatureiterator.cpp
@@ -824,7 +824,7 @@ QgsWFSFeatureIterator::QgsWFSFeatureIterator( QgsWFSFeatureSource *source,
   catch ( QgsCsException & )
   {
     // can't reproject mFilterRect
-    mClosed = true;
+    close();
     return;
   }