Force explicit alignment argument to private_node_pool and shared_node_pool to avoid bugs on overaligned types.

Author: igaztanaga

bench/bench_adaptive_node_pool.cpp

@@ -228,7 +228,7 @@ void list_test_template(std::size_t num_iterations, std::size_t num_elements, bo
    //Release node_allocator cache
    typedef boost::container::dtl::shared_node_pool
       < (2*sizeof(void*)+sizeof(int))
-      , AdPoolAlignOnlyV2::nodes_per_block> shared_node_pool_t;
+      , AdPoolAlignOnlyV2::nodes_per_block, 0> shared_node_pool_t;
    boost::container::dtl::singleton_default
       <shared_node_pool_t>::instance().purge_blocks();
 

include/boost/container/detail/node_pool.hpp

@@ -40,7 +40,7 @@ namespace dtl {
 //!nodes allocated per block (NodesPerBlock) are known at compile time
 template< std::size_t NodeSize
         , std::size_t NodesPerBlock
-        , std::size_t NodeAlign = 0
+        , std::size_t NodeAlign
         >
 class private_node_pool
    //Inherit from the implementation to avoid template bloat
@@ -66,7 +66,7 @@ class private_node_pool
 
 template< std::size_t NodeSize
         , std::size_t NodesPerBlock
-        , std::size_t NodeAlign = 0
+        , std::size_t NodeAlign
         >
 class shared_node_pool
    : public private_node_pool<NodeSize, NodesPerBlock, NodeAlign>