@ -457,7 +457,7 @@ namespace {
return DataBuf();
}
if (nativePreview_.filter_ == "") {
return DataBuf(data + nativePreview_.position_, nativePreview_.size_);
return DataBuf(data + nativePreview_.position_, static_cast<long>(nativePreview_.size_));
} else {
throw Error(1, "Invalid native preview filter: " + nativePreview_.filter_);