X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=include%2Fopenssl%2Fe_os2.h;h=b88abc1791fb58e896ebc7176a2c240cadf5ebf5;hp=002cea3b7f73091f13d0c63f1f5f29fad318d966;hb=48fe4ce104df060dd5d2b4188a56eb554d94d819;hpb=088dfa133561d7613b9391a56ddbce58f32c934a

diff --git a/include/openssl/e_os2.h b/include/openssl/e_os2.h
index 002cea3b7f..b88abc1791 100644
--- a/include/openssl/e_os2.h
+++ b/include/openssl/e_os2.h
@@ -287,6 +287,13 @@ typedef unsigned __int64 uint64_t;
 #  define ossl_noreturn
 # endif
 
+/* ossl_unused: portable unused attribute for use in public headers */
+# if defined(__GNUC__)
+#  define ossl_unused __attribute__((unused))
+# else
+#  define ossl_unused
+# endif
+
 #ifdef  __cplusplus
 }
 #endif