typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
-DECLARE_STACK_OF(EVP_PKEY_METHOD)
+DECLARE_CONST_STACK_OF(EVP_PKEY_METHOD)
static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
static const EVP_PKEY_METHOD *standard_methods[] = {