20 #define vla_group(groupname) size_t groupname##__next = 0  argument
21 #define vla_group_size(groupname) groupname##__next  argument
23 #define vla_item(groupname, type, name, n) \  argument
24 	size_t groupname##_##name##__offset = ({			       \
26 		size_t offset = (groupname##__next + align_mask) & ~align_mask;\
28 		groupname##__next = offset + size;			       \
32 #define vla_item_with_sz(groupname, type, name, n) \  argument
33 	size_t groupname##_##name##__sz = (n) * sizeof(type);		       \
34 	size_t groupname##_##name##__offset = ({			       \
36 		size_t offset = (groupname##__next + align_mask) & ~align_mask;\
37 		size_t size = groupname##_##name##__sz;			       \
38 		groupname##__next = offset + size;			       \
42 #define vla_ptr(ptr, groupname, name) \  argument
43 	((void *) ((char *)ptr + groupname##_##name##__offset))