/* 33 */ {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */
	/* 34 */ {_SigSetStack + _SigUnblock, "signal 34"}, /* musl SIGSYNCCALL; see issue 39343 */
	/* 35 */ {_SigNotify, "signal 35"},
	/* 36 */ {_SigNotify, "signal 36"},
	/* 37 */ {_SigNotify, "signal 37"},
	/* 38 */ {_SigNotify, "signal 38"},
	/* 39 */ {_SigNotify, "signal 39"},

	/*  33 */ {_SigSetStack + _SigUnblock, "signal 33"}, /* SIGSETXID; see issues 3871, 9400, 12498 */
	/*  34 */ {_SigSetStack + _SigUnblock, "signal 34"}, /* musl SIGSYNCCALL; see issue 39343 */
	/*  35 */ {_SigNotify, "signal 35"},
	/*  36 */ {_SigNotify, "signal 36"},
	/*  37 */ {_SigNotify, "signal 37"},
	/*  38 */ {_SigNotify, "signal 38"},
	/*  39 */ {_SigNotify, "signal 39"},

		// these signals are blocked. Thus, don't block these
		// signals when exiting threads.
		// - glibc: SIGCANCEL (32), SIGSETXID (33)
		// - musl: SIGTIMER (32), SIGCANCEL (33), SIGSYNCCALL (34)
		sigdelset(&res, 32)
		sigdelset(&res, 33)
		sigdelset(&res, 34)
	}

	return res
}()

// sigblock blocks signals in the current thread's signal mask.