Most templates in these header take an alignment parameter of type size_t, yet a few of them accept an int instead: is_aligned type_with_alignment These causes in some compilers nasty truncation warnings when using aligned_storage with its default alignment_ parameter (maximum alignment) integer conversion resulted in truncation detected during: instantiation of class "boost::aligned_storage<size_, alignment_> [with size_=16UL, alignment_=18446744073709551615UL]" at line 114 of... 1. Is there any fundamental reason why some alingment parameters are int instead of size_t? 2. If not, any objection to fixing this in the CVS? 3. Could it be the other way around, namely that aligned_storage must use ints instead of size_t's? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo