vendor/libsodium/src/libsodium/include/sodium/crypto_aead_chacha20poly1305.h in rbnacl-libsodium-1.0.5 vs vendor/libsodium/src/libsodium/include/sodium/crypto_aead_chacha20poly1305.h in rbnacl-libsodium-1.0.6

@@ -45,11 +45,12 @@
                                          const unsigned char *c,
                                          unsigned long long clen,
                                          const unsigned char *ad,
                                          unsigned long long adlen,
                                          const unsigned char *npub,
-                                         const unsigned char *k);
+                                         const unsigned char *k)
+            __attribute__ ((warn_unused_result));
 
 #define crypto_aead_chacha20poly1305_IETF_NPUBBYTES 12U
 SODIUM_EXPORT
 size_t crypto_aead_chacha20poly1305_ietf_npubbytes(void);
 
@@ -71,10 +72,12 @@
                                               const unsigned char *c,
                                               unsigned long long clen,
                                               const unsigned char *ad,
                                               unsigned long long adlen,
                                               const unsigned char *npub,
-                                              const unsigned char *k);
+                                              const unsigned char *k)
+            __attribute__ ((warn_unused_result));
+
 #ifdef __cplusplus
 }
 #endif
 
 #endif