Flag xfile as dirty when initialized

Author: davidbrochart

include/xtensor-io/xchunk_store_manager.hpp

@@ -398,7 +398,7 @@ namespace xt
 
     template <class T, class IOH, layout_type L, class IP, class EXT, class S>
     inline xchunked_array<xchunk_store_manager<xfile_array<T, IOH, L>, IP>, EXT>
-    chunked_file_array(S&& shape, S&& chunk_shape, const std::string& path,  const T& init_value,std::size_t pool_size, layout_type chunk_memory_layout)
+    chunked_file_array(S&& shape, S&& chunk_shape, const std::string& path, const T& init_value, std::size_t pool_size, layout_type chunk_memory_layout)
     {
         using chunk_storage = xchunk_store_manager<xfile_array<T, IOH, L>, IP>;
         chunk_storage chunks(shape, chunk_shape, path, pool_size, init_value, chunk_memory_layout);
@@ -407,7 +407,7 @@ namespace xt
 
     template <class T, class IOH, layout_type L, class IP, class EXT, class S>
     inline xchunked_array<xchunk_store_manager<xfile_array<T, IOH, L>, IP>, EXT>
-    chunked_file_array(std::initializer_list<S> shape, std::initializer_list<S> chunk_shape, const std::string& path,  const T& init_value,std::size_t pool_size, layout_type chunk_memory_layout)
+    chunked_file_array(std::initializer_list<S> shape, std::initializer_list<S> chunk_shape, const std::string& path,  const T& init_value, std::size_t pool_size, layout_type chunk_memory_layout)
     {
         using sh_type = std::vector<std::size_t>;
         sh_type sh = xtl::make_sequence<sh_type>(shape.size());

include/xtensor-io/xfile_array.hpp

@@ -675,6 +675,7 @@ namespace xt
                     if (m_init)
                     {
                         std::fill(m_storage.begin(), m_storage.end(), m_init_value);
+                        m_dirty = true;
                     }
                 }
             }