EVP_PKEY_CTX_gettable_params
gettables = EVP_PKEY_CTX_gettable_params(ctx);
const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx);
if (!TEST_ptr(gettable_params = EVP_PKEY_CTX_gettable_params(pctx))
|| !TEST_ptr(EVP_PKEY_CTX_gettable_params(pg_ctx))
params = EVP_PKEY_CTX_gettable_params(ctx);
const OSSL_PARAM *gettables = EVP_PKEY_CTX_gettable_params(ctx);
if (EVP_PKEY_CTX_gettable_params(ctx) == NULL)