var err int32
	err = pthread_attr_init(&attr)
	if err != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Find out OS stack size for our own stack guard.
	var stacksize uintptr
	if pthread_attr_getstacksize(&attr, &stacksize) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
	mp.g0.stack.hi = stacksize // for mstart

	// Tell the pthread library we won't join with this thread.

	return int32(r)
}

//go:nosplit
func pthread_attr_getstacksize(attr *pthread_attr, size *uint64) int32 {
	r, _ := syscall2(&libpthread_attr_getstacksize, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(size)))
	return int32(r)
}

func pthread_attr_setstacksize1(attr uintptr, size uint64) int32

//go:nosplit
func pthread_attr_setstacksize(attr *pthread_attr, size uint64) int32 {
	gp := getg()

	KeepAlive(attr)
	return ret
}
func pthread_attr_init_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func pthread_attr_getstacksize(attr *pthreadattr, size *uintptr) int32 {
	ret := libcCall(unsafe.Pointer(abi.FuncPCABI0(pthread_attr_getstacksize_trampoline)), unsafe.Pointer(&attr))
	KeepAlive(attr)
	KeepAlive(size)
	return ret
}