tag unused function arguments as ossl_unused

Reviewed-by: NTomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13577)

include/internal/refcount.h

@@ -9,6 +9,8 @@
 #ifndef OSSL_INTERNAL_REFCOUNT_H
 # define OSSL_INTERNAL_REFCOUNT_H
 
+# include <openssl/e_os2.h>
+
 /* Used to checking reference counts, most while doing perl5 stuff :-) */
 # if defined(OPENSSL_NO_STDIO)
 #  if defined(REF_PRINT)
@@ -30,7 +32,8 @@
 
 typedef _Atomic int CRYPTO_REF_COUNT;
 
-static inline int CRYPTO_UP_REF(_Atomic int *val, int *ret, void *lock)
+static inline int CRYPTO_UP_REF(_Atomic int *val, int *ret,
+                                ossl_unused void *lock)
 {
     *ret = atomic_fetch_add_explicit(val, 1, memory_order_relaxed) + 1;
     return 1;
@@ -46,7 +49,8 @@ static inline int CRYPTO_UP_REF(_Atomic int *val, int *ret, void *lock)
  * to mutable members doesn't have to be serialized anymore, which would
  * otherwise imply an acquire fence. Hence conditional acquire fence...
  */
-static inline int CRYPTO_DOWN_REF(_Atomic int *val, int *ret, void *lock)
+static inline int CRYPTO_DOWN_REF(_Atomic int *val, int *ret,
+                                  ossl_unused void *lock)
 {
     *ret = atomic_fetch_sub_explicit(val, 1, memory_order_relaxed) - 1;
     if (*ret == 0)
@@ -60,13 +64,14 @@ static inline int CRYPTO_DOWN_REF(_Atomic int *val, int *ret, void *lock)
 
 typedef int CRYPTO_REF_COUNT;
 
-static __inline__ int CRYPTO_UP_REF(int *val, int *ret, void *lock)
+static __inline__ int CRYPTO_UP_REF(int *val, int *ret, ossl_unused void *lock)
 {
     *ret = __atomic_fetch_add(val, 1, __ATOMIC_RELAXED) + 1;
     return 1;
 }
 
-static __inline__ int CRYPTO_DOWN_REF(int *val, int *ret, void *lock)
+static __inline__ int CRYPTO_DOWN_REF(int *val, int *ret,
+                                      ossl_unused void *lock)
 {
     *ret = __atomic_fetch_sub(val, 1, __ATOMIC_RELAXED) - 1;
     if (*ret == 0)
@@ -77,13 +82,15 @@ static __inline__ int CRYPTO_DOWN_REF(int *val, int *ret, void *lock)
 #   define HAVE_ATOMICS 1
 typedef volatile int CRYPTO_REF_COUNT;
 
-static __inline int CRYPTO_UP_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_UP_REF(volatile int *val, int *ret,
+                                  ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd((void *)val, 1) + 1;
     return 1;
 }
 
-static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret,
+                                    ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd((void *)val, -1) - 1;
     return 1;
@@ -101,13 +108,15 @@ typedef volatile int CRYPTO_REF_COUNT;
 #     define _ARM_BARRIER_ISH _ARM64_BARRIER_ISH
 #    endif
 
-static __inline int CRYPTO_UP_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_UP_REF(volatile int *val, int *ret,
+                                  ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd_nf(val, 1) + 1;
     return 1;
 }
 
-static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret,
+                                    ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd_nf(val, -1) - 1;
     if (*ret == 0)
@@ -127,13 +136,15 @@ static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret, void *lock)
 #     endif
 #    endif
 
-static __inline int CRYPTO_UP_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_UP_REF(volatile int *val, int *ret,
+                                  ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd(val, 1) + 1;
     return 1;
 }
 
-static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret, void *lock)
+static __inline int CRYPTO_DOWN_REF(volatile int *val, int *ret,
+                                    ossl_unused void *lock)
 {
     *ret = _InterlockedExchangeAdd(val, -1) - 1;
     return 1;

ssl/record/ssl3_record_tls13.c

@@ -21,7 +21,7 @@
  *    1: if the record encryption/decryption was successful.
  */
 int tls13_enc(SSL *s, SSL3_RECORD *recs, size_t n_recs, int sending,
-              SSL_MAC_BUF *mac, size_t macsize)
+              ossl_unused SSL_MAC_BUF *mac, ossl_unused size_t macsize)
 {
     EVP_CIPHER_CTX *ctx;
     unsigned char iv[EVP_MAX_IV_LENGTH], recheader[SSL3_RT_HEADER_LENGTH];

ssl/statem/extensions.c

@@ -1129,7 +1129,7 @@ static int init_sig_algs(SSL *s, unsigned int context)
     return 1;
 }
 
-static int init_sig_algs_cert(SSL *s, unsigned int context)
+static int init_sig_algs_cert(SSL *s, ossl_unused unsigned int context)
 {
     /* Clear any signature algorithms extension received */
     OPENSSL_free(s->s3.tmp.peer_cert_sigalgs);
@@ -1674,7 +1674,7 @@ static int final_maxfragmentlen(SSL *s, unsigned int context, int sent)
     return 1;
 }
 
-static int init_post_handshake_auth(SSL *s, unsigned int context)
+static int init_post_handshake_auth(SSL *s, ossl_unused unsigned int context)
 {
     s->post_handshake_auth = SSL_PHA_NONE;
 

ssl/statem/extensions_clnt.c

@@ -1158,8 +1158,9 @@ EXT_RETURN tls_construct_ctos_psk(SSL *s, WPACKET *pkt, unsigned int context,
 }
 
 EXT_RETURN tls_construct_ctos_post_handshake_auth(SSL *s, WPACKET *pkt,
-                                                  unsigned int context,
-                                                  X509 *x, size_t chainidx)
+                                                  ossl_unused unsigned int context,
+                                                  ossl_unused X509 *x,
+                                                  ossl_unused size_t chainidx)
 {
 #ifndef OPENSSL_NO_TLS1_3
     if (!s->pha_enabled)

ssl/statem/extensions_srvr.c

@@ -267,8 +267,10 @@ int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
     return 1;
 }
 
-int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt, unsigned int context,
-                                 X509 *x, size_t chainidx)
+int tls_parse_ctos_sig_algs_cert(SSL *s, PACKET *pkt,
+                                 ossl_unused unsigned int context,
+                                 ossl_unused X509 *x,
+                                 ossl_unused size_t chainidx)
 {
     PACKET supported_sig_algs;
 
@@ -1214,8 +1216,10 @@ err:
     return 0;
 }
 
-int tls_parse_ctos_post_handshake_auth(SSL *s, PACKET *pkt, unsigned int context,
-                                       X509 *x, size_t chainidx)
+int tls_parse_ctos_post_handshake_auth(SSL *s, PACKET *pkt,
+                                       ossl_unused unsigned int context,
+                                       ossl_unused X509 *x,
+                                       ossl_unused size_t chainidx)
 {
     if (PACKET_remaining(pkt) != 0) {
         SSLfatal(s, SSL_AD_DECODE_ERROR,

ssl/statem/statem_lib.c

@@ -1043,7 +1043,8 @@ unsigned long ssl3_output_cert_chain(SSL *s, WPACKET *pkt, CERT_PKEY *cpk)
  * in NBIO events. If |clearbufs| is set then init_buf and the wbio buffer is
  * freed up as well.
  */
-WORK_STATE tls_finish_handshake(SSL *s, WORK_STATE wst, int clearbufs, int stop)
+WORK_STATE tls_finish_handshake(SSL *s, ossl_unused WORK_STATE wst,
+                                int clearbufs, int stop)
 {
     void (*cb) (const SSL *ssl, int type, int val) = NULL;
     int cleanuphand = s->statem.cleanuphand;