X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fdigest.h;h=1e149456124aa8bef876bb2f62df1a891115d642;hb=cc284e7c5d298ca887c07f918da35e376bf98720;hp=848b9110646e119f5c58fd2a2e5dc3d96833157d;hpb=0acdce222ff21c84cafc82c137e3d1e107a66fd9;p=tinc

diff --git a/src/digest.h b/src/digest.h
index 848b9110..1e149456 100644
--- a/src/digest.h
+++ b/src/digest.h
@@ -24,13 +24,13 @@
 
 typedef struct digest digest_t;
 
-extern digest_t *digest_open_by_name(const char *name, int maclength);
-extern digest_t *digest_open_by_nid(int nid, int maclength);
-extern digest_t *digest_open_sha1(int maclength);
+extern digest_t *digest_open_by_name(const char *name, int maclength) __attribute__ ((__malloc__));
+extern digest_t *digest_open_by_nid(int nid, int maclength) __attribute__ ((__malloc__));
+extern digest_t *digest_open_sha1(int maclength) __attribute__ ((__malloc__));
 extern void digest_close(digest_t *);
-extern bool digest_create(digest_t *, const void *indata, size_t inlen, void *outdata);
-extern bool digest_verify(digest_t *, const void *indata, size_t inlen, const void *digestdata);
-extern bool digest_set_key(digest_t *, const void *key, size_t len);
+extern bool digest_create(digest_t *, const void *indata, size_t inlen, void *outdata) __attribute__ ((__warn_unused_result__));
+extern bool digest_verify(digest_t *, const void *indata, size_t inlen, const void *digestdata) __attribute__ ((__warn_unused_result__));
+extern bool digest_set_key(digest_t *, const void *key, size_t len) __attribute__ ((__warn_unused_result__));
 extern int digest_get_nid(const digest_t *);
 extern size_t digest_keylength(const digest_t *);
 extern size_t digest_length(const digest_t *);