sumsize
sumsize = newcg->cg_iusedoff - newcg->cg_btotoff;
sumsize + mapsize);
(void *)&cg_blktot(newcg)[0], sumsize);
size_t basesize, sumsize, mapsize;
ptrdiff_t f_prefix_copy_size = sumsize(f_prefix_len, 2);
size = sumsize(size, size);
fakeenv0size = sumsize(valsize, valsize);
xmalloc(sumsize(sumsize(sizeof *environ,
sumsize(TZeqlen, fakeenv0size)));
*bufalloc = sumsize(*bufalloc, absize);