// which phases to dump IR before/after, etc.
	if f.Log() {
		f.Logf("compiling %s\n", f.Name)
	}

	var rnd *rand.Rand
	if checkEnabled {
		seed := int64(crc32.ChecksumIEEE(([]byte)(f.Name))) ^ int64(checkRandSeed)
		rnd = rand.New(rand.NewSource(seed))
	}

	// hook to print function & phase if panic happens
	phaseName := "init"
	defer func() {
		if phaseName != "" {

	var buf Buffer
	s := ""
	for i := 0; i < 50; i++ {
		wlen := rand.Intn(len(testString))
		if i%2 == 0 {
			s = fillString(t, "TestMixedReadsAndWrites (1)", &buf, s, 1, testString[0:wlen])
		} else {
			s = fillBytes(t, "TestMixedReadsAndWrites (1)", &buf, s, 1, testBytes[0:wlen])
		}

		rlen := rand.Intn(len(testString))
		fub := make([]byte, rlen)
		n, _ := buf.Read(fub)
		s = s[n:]
	}

A future version of Go may change the defaults to
`tarinsecurepath=0` and `zipinsecurepath=0`.

Go 1.20 introduced automatic seeding of the
[`math/rand`](/pkg/math/rand) global random number generator,
controlled by the [`randautoseed` setting](/pkg/math/rand/#Seed).

Go 1.20 introduced the concept of fallback roots for use during certificate verification,

	const int M = 100;
	int i;
	(void)p;
	for (i = 0; i < M; i++) {
		pthread_kill(pthread_self(), SIGCHLD);
		usleep(rand() % 20 + 5);
	}
	return NULL;
}
void testSendSIG() {
	const int N = 20;
	int i;
	pthread_t tid[N];
	for (i = 0; i < N; i++) {
		usleep(rand() % 200 + 100);
		pthread_create(&tid[i], 0, thread, NULL);
	}
	for (i = 0; i < N; i++)
		pthread_join(tid[i], 0);
}
#endif