X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fprf.h;h=9e64989038594ca0fd361881f3079a8b1ea97c3d;hb=1b777010e7255cb354e31ca28c6442ee86383bac;hp=f7ecc644f92a2c2834f5edd0d473ccd7373e2262;hpb=0acdce222ff21c84cafc82c137e3d1e107a66fd9;p=tinc

diff --git a/src/prf.h b/src/prf.h
index f7ecc644..9e649890 100644
--- a/src/prf.h
+++ b/src/prf.h
@@ -1,3 +1,6 @@
+#ifndef TINC_PRF_H
+#define TINC_PRF_H
+
 /*
     prf.h -- header file for prf.c
     Copyright (C) 2011-2013 Guus Sliepen <guus@tinc-vpn.org>
@@ -17,9 +20,6 @@
     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef __TINC_PRF_H__
-#define __TINC_PRF_H__
-
-extern bool prf(const char *secret, size_t secretlen, char *seed, size_t seedlen, char *out, size_t outlen);
+extern bool prf(const char *secret, size_t secretlen, char *seed, size_t seedlen, char *out, size_t outlen) __attribute__((__warn_unused_result__));
 
 #endif