Throw errors in JSON/HDF5 when supplying memory selection

Author: franzpoeschel

src/IO/HDF5/HDF5IOHandler.cpp

@@ -1517,6 +1517,13 @@ void HDF5IOHandlerImpl::writeDataset(
             "[HDF5] Writing into a dataset in a file opened as read only is "
             "not possible.");
 
+    if (parameters.memorySelection.has_value())
+    {
+        throw error::OperationUnsupportedInBackend(
+            "HDF5",
+            "Non-contiguous memory selections not supported in HDF5 backend.");
+    }
+
     auto res = getFile(writable);
     File file = res ? res.value() : getFile(writable->parent).value();
 

src/IO/JSON/JSONIOHandlerImpl.cpp

@@ -872,6 +872,13 @@ void JSONIOHandlerImpl::writeDataset(
         access::write(m_handler->m_backendAccess),
         "[JSON] Cannot write data in read-only mode.");
 
+    if (parameters.memorySelection.has_value())
+    {
+        throw error::OperationUnsupportedInBackend(
+            "JSON",
+            "Non-contiguous memory selections not supported in JSON backend.");
+    }
+
     auto pos = setAndGetFilePosition(writable);
     auto file = refreshFileFromParent(writable);
     auto &j = obtainJsonContents(writable);