TEST_ARRAY_BUF_OFFSET
size_t e_size = TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1;
puf->e->pos += TEST_ARRAY_BUF_OFFSET;
puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
puf->e->end = puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16);