OSSL_SELF_TEST_get_callback
OSSL_SELF_TEST_get_callback(dh->libctx, &stcb, &stcbarg);
OSSL_SELF_TEST_get_callback(dsa->libctx, &cb, &cbarg);
OSSL_SELF_TEST_get_callback(eckey->libctx, &cb, &cbarg);
OSSL_SELF_TEST_get_callback((OSSL_LIB_CTX *)libctx, cb, cbarg);
OSSL_SELF_TEST_get_callback(libctx, &stcb, &stcbarg);
void OSSL_SELF_TEST_get_callback(OSSL_LIB_CTX *libctx, OSSL_CALLBACK **cb,
OSSL_SELF_TEST_get_callback(ecx->libctx, &cb, &cbarg);
OSSL_SELF_TEST_get_callback(ctx, &cb, &cbarg);
OSSL_SELF_TEST_get_callback(key->libctx, &cb, &cbarg);
OSSL_SELF_TEST_get_callback(lib_ctx, &cb, &cb_arg);