CG_MAGIC
ocg->cg_magic = CG_MAGIC;
newcg->cg_magic = CG_MAGIC;
ocg->cg_magic = CG_MAGIC;
if (acg.cg_magic != CG_MAGIC) {
acg.cg_magic = CG_MAGIC;
acg.cg_magic = CG_MAGIC;
if (acg.cg_magic != CG_MAGIC) {
if (acg.cg_magic != CG_MAGIC)
(((cgp)->cg_magic != CG_MAGIC) \
(((cgp)->cg_magic != CG_MAGIC) \
(((cgp)->cg_magic != CG_MAGIC) \
(((cgp)->cg_magic != CG_MAGIC) \
((cgp)->cg_magic == CG_MAGIC || ((struct ocg *)(cgp))->cg_magic == CG_MAGIC)
acg.cg_magic = CG_MAGIC;