PS_NOCLDWAIT
if (p->p_pptr->p_sigacts->ps_flag & (PS_NOCLDWAIT | PS_CLDSIGIGN)) {
if (p->p_sigacts->ps_flag & PS_NOCLDWAIT)
p->p_sigacts->ps_flag &= ~PS_NOCLDWAIT;
p->p_sigacts->ps_flag |= PS_NOCLDWAIT;
p->p_sigacts->ps_flag &= ~PS_NOCLDWAIT;
p->p_sigacts->ps_flag &= ~(PS_NOCLDWAIT | PS_CLDSIGIGN);
p2->p_sigacts->ps_flag |= PS_NOCLDWAIT;