Hi Sam, > 1. There is already alignof module - is this a replacement?
It is not exactly a replacement, because there are two possible notions of alignof - the necessary alignment and the optimal alignment [1]-, and while alignof.h favors the optimal alignment, I think that <stdalign.h> favors the necessary alignment. This is one of the problems that need to be dealt with when adding this module to gnulib. > 2. alignof.h uses offsetof macro - where is it defined? It is defined in <stddef.h>. This is portable. No platform exists with known portability problems. > 3. clisp/src/lispbibl.d defines offsetof, offsetofa, alignof - which > gnulib modules should they be imported from? (or should I just leave > them defined in clisp?) For offsetof, clisp could rely on <stddef.h>. offsetofa is a clisp invention. For alignof, whether you want to use gnulib's <alignof.h> depends on what you need - the necessary alignment and the optimal alignment. Bruno [1] See the comments in lib/alignof.h. -- In memoriam Stjepan Đureković <http://en.wikipedia.org/wiki/Stjepan_Đureković>
