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	sigonstack(size_t sp)			sigonstack(size_t sp)
	{			{
	struct thread *td;			struct thread *td;

	td = curthread;			td = curthread;
	if ((td->td_pflags & TDP_ALTSTACK) == 0)			if ((td->td_pflags & TDP_ALTSTACK) == 0)
	return (0);			return (0);
	#if defined(COMPAT_43)			#if defined(COMPAT_43)
	if (td->td_sigstk.ss_size == 0)			if (SV_PROC_FLAG(td->td_proc, SV_AOUT) && td->td_sigstk.ss_size == 0)
	return ((td->td_sigstk.ss_flags & SS_ONSTACK) != 0);			return ((td->td_sigstk.ss_flags & SS_ONSTACK) != 0);
	#endif			#endif
	return (sp >= (size_t)td->td_sigstk.ss_sp &&			return (sp >= (size_t)td->td_sigstk.ss_sp &&
	sp < td->td_sigstk.ss_size + (size_t)td->td_sigstk.ss_sp);			sp < td->td_sigstk.ss_size + (size_t)td->td_sigstk.ss_sp);
	}			}

	static __inline int			static __inline int
	sigprop(int sig)			sigprop(int sig)
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