+ OSSL_PARAM_BLD *r = OPENSSL_zalloc(sizeof(OSSL_PARAM_BLD));
+
+ if (r != NULL) {
+ r->params = sk_OSSL_PARAM_BLD_DEF_new_null();
+ if (r->params == NULL) {
+ OPENSSL_free(r);
+ r = NULL;
+ }
+ }
+ return r;
+}
+
+static void free_all_params(OSSL_PARAM_BLD *bld)
+{
+ int i, n = sk_OSSL_PARAM_BLD_DEF_num(bld->params);
+
+ for (i = 0; i < n; i++)
+ OPENSSL_free(sk_OSSL_PARAM_BLD_DEF_pop(bld->params));