#endif
extern ecdh_t *ecdh_generate_public(void *pubkey) __attribute__ ((__malloc__));
-extern bool ecdh_compute_shared(ecdh_t *ecdh, const void *pubkey, void *shared);
+extern bool ecdh_compute_shared(ecdh_t *ecdh, const void *pubkey, void *shared) __attribute__ ((__warn_unused_result__));
extern void ecdh_free(ecdh_t *ecdh);
#endif