19 #define vla_group(groupname) size_t groupname##__next = 0  argument
20 #define vla_group_size(groupname) groupname##__next  argument
22 #define vla_item(groupname, type, name, n) \  argument
23 	size_t groupname##_##name##__offset = ({			       \
25 		size_t offset = (groupname##__next + align_mask) & ~align_mask;\
27 		groupname##__next = offset + size;			       \
31 #define vla_item_with_sz(groupname, type, name, n) \  argument
32 	size_t groupname##_##name##__sz = (n) * sizeof(type);		       \
33 	size_t groupname##_##name##__offset = ({			       \
35 		size_t offset = (groupname##__next + align_mask) & ~align_mask;\
36 		size_t size = groupname##_##name##__sz;			       \
37 		groupname##__next = offset + size;			       \
41 #define vla_ptr(ptr, groupname, name) \  argument
42 	((void *) ((char *)ptr + groupname##_##name##__offset))