Hi! In ptr_sequence_adapter.hpp we have function: template< class Pred > void erase_if( iterator first, iterator last, Pred pred ) { range_check(first,last); this->base().erase( std::remove_if( first.base(), last.base(), void_ptr_delete_if<Pred,value_type>(pred) ), this->base().end() ); } If we call this function with second parameter not equal to this->base().end() then function remove not only elemets for wich pred return true, but also all alement from last.base() to the end of container (this->base().end()). This is seems bug due to function documentation: template< class Pred > void erase_if( Pred pred ); template< class Pred > void erase_if( iterator begin, iterator end, Pred pred ); * Requirements: Pred must take an const T& argument * Effects: removes all elements t for which pred(t) returns true from the entire container or the specified range -- Yours sincerely, Anton Ivanov (ai@drweb.com)