ossl_crypto_thread_join
int ossl_crypto_thread_join(void *task, CRYPTO_THREAD_RETVAL *retval);
if (ossl_crypto_thread_join(t[l - ctx->threads], NULL) == 0)
if (ossl_crypto_thread_join(t[ll], NULL) == 0)
if (ossl_crypto_thread_join(t[l], NULL) == 0)
if (!TEST_int_eq(ossl_crypto_thread_join(t[i], &retval[0]), 1))
if (!TEST_int_eq(ossl_crypto_thread_join(t[i], &retval[0]), 1))
if (!TEST_int_eq(ossl_crypto_thread_join(t[i], &retval[i]), 1))
if (!TEST_int_eq(ossl_crypto_thread_join(t[i], &retval[i]), 1))