Replaced '{ 0, NULL }' with OSSL_DISPATCH_END in OSSL_DISPATCH arrays

Fixes #20710

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20745)

86 files changed, 100 insertions, 100 deletions

diff --git a/providers/baseprov.c b/providers/baseprov.c
index f2729b3307..9705314261 100644
--- a/providers/baseprov.c
+++ b/providers/baseprov.c
@@ -118,7 +118,7 @@ static const OSSL_DISPATCH base_dispatch_table[] = {
       (void (*)(void))base_gettable_params },
     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))base_get_params },
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))base_query },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 OSSL_provider_init_fn ossl_base_provider_init;
diff --git a/providers/defltprov.c b/providers/defltprov.c
index 274b2b4c92..4f8921f80a 100644
--- a/providers/defltprov.c
+++ b/providers/defltprov.c
@@ -557,7 +557,7 @@ static const OSSL_DISPATCH deflt_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))deflt_query },
     { OSSL_FUNC_PROVIDER_GET_CAPABILITIES,
       (void (*)(void))ossl_prov_get_capabilities },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 OSSL_provider_init_fn ossl_default_provider_init;
diff --git a/providers/fips/fipsprov.c b/providers/fips/fipsprov.c
index d56c40afda..cac97b7bc9 100644
--- a/providers/fips/fipsprov.c
+++ b/providers/fips/fipsprov.c
@@ -545,14 +545,14 @@ static const OSSL_DISPATCH fips_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_GET_CAPABILITIES,
       (void (*)(void))ossl_prov_get_capabilities },
     { OSSL_FUNC_PROVIDER_SELF_TEST, (void (*)(void))fips_self_test },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /* Functions we provide to ourself */
 static const OSSL_DISPATCH intern_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_TEARDOWN, (void (*)(void))fips_intern_teardown },
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))fips_query },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /*
diff --git a/providers/implementations/asymciphers/rsa_enc.c b/providers/implementations/asymciphers/rsa_enc.c
index fbafb84f8c..884c032d21 100644
--- a/providers/implementations/asymciphers/rsa_enc.c
+++ b/providers/implementations/asymciphers/rsa_enc.c
@@ -602,5 +602,5 @@ const OSSL_DISPATCH ossl_rsa_asym_cipher_functions[] = {
       (void (*)(void))rsa_set_ctx_params },
     { OSSL_FUNC_ASYM_CIPHER_SETTABLE_CTX_PARAMS,
       (void (*)(void))rsa_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/asymciphers/sm2_enc.c b/providers/implementations/asymciphers/sm2_enc.c
index ddb2cfc14a..707f1aa9e6 100644
--- a/providers/implementations/asymciphers/sm2_enc.c
+++ b/providers/implementations/asymciphers/sm2_enc.c
@@ -229,5 +229,5 @@ const OSSL_DISPATCH ossl_sm2_asym_cipher_functions[] = {
       (void (*)(void))sm2_set_ctx_params },
     { OSSL_FUNC_ASYM_CIPHER_SETTABLE_CTX_PARAMS,
       (void (*)(void))sm2_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/ciphers/cipher_aes_cbc_hmac_sha.c b/providers/implementations/ciphers/cipher_aes_cbc_hmac_sha.c
index f9a8a58041..4ca4459218 100644
--- a/providers/implementations/ciphers/cipher_aes_cbc_hmac_sha.c
+++ b/providers/implementations/ciphers/cipher_aes_cbc_hmac_sha.c
@@ -26,7 +26,7 @@
 #ifndef AES_CBC_HMAC_SHA_CAPABLE
 # define IMPLEMENT_CIPHER(nm, sub, kbits, blkbits, ivbits, flags)              \
 const OSSL_DISPATCH ossl_##nm##kbits##sub##_functions[] = {                    \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                              \
 };
 #else
 
@@ -403,7 +403,7 @@ const OSSL_DISPATCH ossl_##nm##kbits##sub##_functions[] = {                    \
         (void (*)(void))nm##_set_ctx_params },                                 \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
         (void (*)(void))nm##_settable_ctx_params },                            \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 #endif /* AES_CBC_HMAC_SHA_CAPABLE */
diff --git a/providers/implementations/ciphers/cipher_aes_gcm_siv.c b/providers/implementations/ciphers/cipher_aes_gcm_siv.c
index 7bca9b3bd1..dd2fdb64a4 100644
--- a/providers/implementations/ciphers/cipher_aes_gcm_siv.c
+++ b/providers/implementations/ciphers/cipher_aes_gcm_siv.c
@@ -315,7 +315,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lc##_functions[] = {
     { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, (void (*)(void))ossl_##alg##_##lc##_gettable_ctx_params },  \
     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,      (void (*)(void))ossl_##alg##_##lc##_set_ctx_params },       \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, (void (*)(void))ossl_##alg##_##lc##_settable_ctx_params },  \
-    { 0, NULL }                                                                                         \
+    OSSL_DISPATCH_END                                                                                   \
 }
 
 IMPLEMENT_cipher(aes, gcm_siv, GCM_SIV, AEAD_FLAGS, 128, 8, 96);
diff --git a/providers/implementations/ciphers/cipher_aes_ocb.c b/providers/implementations/ciphers/cipher_aes_ocb.c
index 4f2f6fb430..3044faa306 100644
--- a/providers/implementations/ciphers/cipher_aes_ocb.c
+++ b/providers/implementations/ciphers/cipher_aes_ocb.c
@@ -549,7 +549,7 @@ const OSSL_DISPATCH ossl_##aes##kbits##mode##_functions[] = {                  \
         (void (*)(void))cipher_ocb_gettable_ctx_params },                      \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
         (void (*)(void))cipher_ocb_settable_ctx_params },                      \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 IMPLEMENT_cipher(ocb, OCB, AES_OCB_FLAGS, 256, 128, OCB_DEFAULT_IV_LEN * 8);
diff --git a/providers/implementations/ciphers/cipher_aes_siv.c b/providers/implementations/ciphers/cipher_aes_siv.c
index 9ce91f70ce..fe83a5d9a6 100644
--- a/providers/implementations/ciphers/cipher_aes_siv.c
+++ b/providers/implementations/ciphers/cipher_aes_siv.c
@@ -293,7 +293,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lc##_functions[] = {                    \
       (void (*)(void)) alg##_##lc##_set_ctx_params },                          \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
       (void (*)(void)) alg##_##lc##_settable_ctx_params },                     \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 IMPLEMENT_cipher(aes, siv, SIV, SIV_FLAGS, 128, 8, 0)
diff --git a/providers/implementations/ciphers/cipher_aes_wrp.c b/providers/implementations/ciphers/cipher_aes_wrp.c
index 8bddf475e2..b3737e34d9 100644
--- a/providers/implementations/ciphers/cipher_aes_wrp.c
+++ b/providers/implementations/ciphers/cipher_aes_wrp.c
@@ -293,7 +293,7 @@ static int aes_wrap_set_ctx_params(void *vctx, const OSSL_PARAM params[])
             (void (*)(void))ossl_cipher_generic_gettable_ctx_params },         \
         { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                \
             (void (*)(void))ossl_cipher_generic_settable_ctx_params },         \
-        { 0, NULL }                                                            \
+        OSSL_DISPATCH_END                                                      \
     }
 
 IMPLEMENT_cipher(wrap, wrap, WRAP, WRAP_FLAGS, 256, 64, AES_WRAP_NOPAD_IVLEN * 8);
diff --git a/providers/implementations/ciphers/cipher_aes_xts.c b/providers/implementations/ciphers/cipher_aes_xts.c
index ecd9f02ac2..f5a97bf0bb 100644
--- a/providers/implementations/ciphers/cipher_aes_xts.c
+++ b/providers/implementations/ciphers/cipher_aes_xts.c
@@ -285,7 +285,7 @@ const OSSL_DISPATCH ossl_aes##kbits##xts_functions[] = {                       \
       (void (*)(void))aes_xts_set_ctx_params },                                \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))aes_xts_settable_ctx_params },                            \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 IMPLEMENT_cipher(xts, XTS, 256, AES_XTS_FLAGS);
diff --git a/providers/implementations/ciphers/cipher_chacha20.c b/providers/implementations/ciphers/cipher_chacha20.c
index d957ff6ea3..41aa056c2d 100644
--- a/providers/implementations/ciphers/cipher_chacha20.c
+++ b/providers/implementations/ciphers/cipher_chacha20.c
@@ -200,6 +200,6 @@ const OSSL_DISPATCH ossl_chacha20_functions[] = {
     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, (void (*)(void))chacha20_set_ctx_params },
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
         (void (*)(void))chacha20_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
diff --git a/providers/implementations/ciphers/cipher_chacha20_poly1305.c b/providers/implementations/ciphers/cipher_chacha20_poly1305.c
index 8cbaa50d95..50fdd15bdc 100644
--- a/providers/implementations/ciphers/cipher_chacha20_poly1305.c
+++ b/providers/implementations/ciphers/cipher_chacha20_poly1305.c
@@ -327,6 +327,6 @@ const OSSL_DISPATCH ossl_chacha20_ossl_poly1305_functions[] = {
         (void (*)(void))chacha20_poly1305_set_ctx_params },
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
         (void (*)(void))chacha20_poly1305_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
diff --git a/providers/implementations/ciphers/cipher_cts.h b/providers/implementations/ciphers/cipher_cts.h
index 9473fbde88..d52c99f1ac 100644
--- a/providers/implementations/ciphers/cipher_cts.h
+++ b/providers/implementations/ciphers/cipher_cts.h
@@ -42,7 +42,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_cts_functions[] = {            \
       (void (*)(void)) alg##_cbc_cts_gettable_ctx_params },                    \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void)) alg##_cbc_cts_settable_ctx_params },                     \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 OSSL_FUNC_cipher_update_fn ossl_cipher_cbc_cts_block_update;
diff --git a/providers/implementations/ciphers/cipher_des.c b/providers/implementations/ciphers/cipher_des.c
index 6acfa05119..1cbf677b27 100644
--- a/providers/implementations/ciphers/cipher_des.c
+++ b/providers/implementations/ciphers/cipher_des.c
@@ -183,7 +183,7 @@ const OSSL_DISPATCH ossl_##des_##lcmode##_functions[] = {                      \
      (void (*)(void))ossl_cipher_generic_set_ctx_params },                     \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))ossl_cipher_generic_settable_ctx_params },                \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 /* ossl_des_ecb_functions */
diff --git a/providers/implementations/ciphers/cipher_null.c b/providers/implementations/ciphers/cipher_null.c
index 0df97a7f8b..0bd2bcbb14 100644
--- a/providers/implementations/ciphers/cipher_null.c
+++ b/providers/implementations/ciphers/cipher_null.c
@@ -193,5 +193,5 @@ const OSSL_DISPATCH ossl_null_functions[] = {
     { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, (void (*)(void))null_set_ctx_params },
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
       (void (*)(void))null_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/ciphers/cipher_rc2.c b/providers/implementations/ciphers/cipher_rc2.c
index 388613c548..34e6375a7d 100644
--- a/providers/implementations/ciphers/cipher_rc2.c
+++ b/providers/implementations/ciphers/cipher_rc2.c
@@ -263,7 +263,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = {                \
       (void (*)(void))rc2_set_ctx_params },                                    \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))rc2_settable_ctx_params },                                \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 /* ossl_rc2128ecb_functions */
diff --git a/providers/implementations/ciphers/cipher_rc4.c b/providers/implementations/ciphers/cipher_rc4.c
index 95f075076c..4672c3fe53 100644
--- a/providers/implementations/ciphers/cipher_rc4.c
+++ b/providers/implementations/ciphers/cipher_rc4.c
@@ -110,7 +110,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##_functions[] = {                        \
       (void (*)(void))ossl_cipher_generic_gettable_ctx_params },               \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))ossl_cipher_var_keylen_settable_ctx_params },             \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 /* ossl_rc440_functions */
diff --git a/providers/implementations/ciphers/cipher_rc4_hmac_md5.c b/providers/implementations/ciphers/cipher_rc4_hmac_md5.c
index c46c6eab63..053bcda653 100644
--- a/providers/implementations/ciphers/cipher_rc4_hmac_md5.c
+++ b/providers/implementations/ciphers/cipher_rc4_hmac_md5.c
@@ -230,5 +230,5 @@ const OSSL_DISPATCH ossl_rc4_hmac_ossl_md5_functions[] = {
         (void (*)(void))rc4_hmac_md5_set_ctx_params },
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
         (void (*)(void))rc4_hmac_md5_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/ciphers/cipher_rc5.c b/providers/implementations/ciphers/cipher_rc5.c
index 54fd4fba03..3d6aa0e24b 100644
--- a/providers/implementations/ciphers/cipher_rc5.c
+++ b/providers/implementations/ciphers/cipher_rc5.c
@@ -173,7 +173,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = {                \
       (void (*)(void))rc5_set_ctx_params },                                    \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))rc5_settable_ctx_params },                                \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 /* ossl_rc5128ecb_functions */
diff --git a/providers/implementations/ciphers/cipher_sm4_xts.c b/providers/implementations/ciphers/cipher_sm4_xts.c
index 037055fce8..24b0771f2b 100644
--- a/providers/implementations/ciphers/cipher_sm4_xts.c
+++ b/providers/implementations/ciphers/cipher_sm4_xts.c
@@ -275,7 +275,7 @@ const OSSL_DISPATCH ossl_sm4##kbits##xts_functions[] = {                       \
       (void (*)(void))sm4_xts_set_ctx_params },                                \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))sm4_xts_settable_ctx_params },                            \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 /* ossl_sm4128xts_functions */
 IMPLEMENT_cipher(xts, XTS, 128, SM4_XTS_FLAGS);
diff --git a/providers/implementations/ciphers/cipher_tdes.h b/providers/implementations/ciphers/cipher_tdes.h
index 93f9d1744d..88987d76fb 100644
--- a/providers/implementations/ciphers/cipher_tdes.h
+++ b/providers/implementations/ciphers/cipher_tdes.h
@@ -67,7 +67,7 @@ const OSSL_DISPATCH ossl_tdes_##type##_##lcmode##_functions[] = {              \
      (void (*)(void))ossl_cipher_generic_set_ctx_params },                     \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))ossl_cipher_generic_settable_ctx_params },                \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 void *ossl_tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
diff --git a/providers/implementations/ciphers/cipher_tdes_wrap.c b/providers/implementations/ciphers/cipher_tdes_wrap.c
index 1b4539a64c..dbaf4890ac 100644
--- a/providers/implementations/ciphers/cipher_tdes_wrap.c
+++ b/providers/implementations/ciphers/cipher_tdes_wrap.c
@@ -203,7 +203,7 @@ const OSSL_DISPATCH ossl_tdes_wrap_cbc_functions[] =                           \
       (void (*)(void))ossl_cipher_generic_set_ctx_params },                    \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
       (void (*)(void))ossl_cipher_generic_settable_ctx_params },               \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 /* ossl_tdes_wrap_cbc_functions */
diff --git a/providers/implementations/encode_decode/decode_der2key.c b/providers/implementations/encode_decode/decode_der2key.c
index 9fb447f579..d8231fdbc3 100644
--- a/providers/implementations/encode_decode/decode_der2key.c
+++ b/providers/implementations/encode_decode/decode_der2key.c
@@ -749,7 +749,7 @@ static void rsa_adjust(void *key, struct der2key_ctx_st *ctx)
           (void (*)(void))der2key_decode },                             \
         { OSSL_FUNC_DECODER_EXPORT_OBJECT,                              \
           (void (*)(void))der2key_export_object },                      \
-        { 0, NULL }                                                     \
+        OSSL_DISPATCH_END                                               \
     }
 
 #ifndef OPENSSL_NO_DH
diff --git a/providers/implementations/encode_decode/decode_epki2pki.c b/providers/implementations/encode_decode/decode_epki2pki.c
index 9cea80b616..16fdc7945e 100644
--- a/providers/implementations/encode_decode/decode_epki2pki.c
+++ b/providers/implementations/encode_decode/decode_epki2pki.c
@@ -154,5 +154,5 @@ const OSSL_DISPATCH ossl_EncryptedPrivateKeyInfo_der_to_der_decoder_functions[]
     { OSSL_FUNC_DECODER_NEWCTX, (void (*)(void))epki2pki_newctx },
     { OSSL_FUNC_DECODER_FREECTX, (void (*)(void))epki2pki_freectx },
     { OSSL_FUNC_DECODER_DECODE, (void (*)(void))epki2pki_decode },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/encode_decode/decode_msblob2key.c b/providers/implementations/encode_decode/decode_msblob2key.c
index fe4ea77b3a..bb4c3a8183 100644
--- a/providers/implementations/encode_decode/decode_msblob2key.c
+++ b/providers/implementations/encode_decode/decode_msblob2key.c
@@ -262,7 +262,7 @@ static void rsa_adjust(void *key, struct msblob2key_ctx_st *ctx)
           (void (*)(void))msblob2key_decode },                          \
         { OSSL_FUNC_DECODER_EXPORT_OBJECT,                              \
           (void (*)(void))msblob2key_export_object },                   \
-        { 0, NULL }                                                     \
+        OSSL_DISPATCH_END                                               \
     }
 
 #ifndef OPENSSL_NO_DSA
diff --git a/providers/implementations/encode_decode/decode_pem2der.c b/providers/implementations/encode_decode/decode_pem2der.c
index 648ecd4584..4423c1e5a5 100644
--- a/providers/implementations/encode_decode/decode_pem2der.c
+++ b/providers/implementations/encode_decode/decode_pem2der.c
@@ -216,5 +216,5 @@ const OSSL_DISPATCH ossl_pem_to_der_decoder_functions[] = {
     { OSSL_FUNC_DECODER_NEWCTX, (void (*)(void))pem2der_newctx },
     { OSSL_FUNC_DECODER_FREECTX, (void (*)(void))pem2der_freectx },
     { OSSL_FUNC_DECODER_DECODE, (void (*)(void))pem2der_decode },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/encode_decode/decode_pvk2key.c b/providers/implementations/encode_decode/decode_pvk2key.c
index c6424165b0..6624773d9b 100644
--- a/providers/implementations/encode_decode/decode_pvk2key.c
+++ b/providers/implementations/encode_decode/decode_pvk2key.c
@@ -230,7 +230,7 @@ static void rsa_adjust(void *key, struct pvk2key_ctx_st *ctx)
           (void (*)(void))pvk2key_decode },                             \
         { OSSL_FUNC_DECODER_EXPORT_OBJECT,                              \
           (void (*)(void))pvk2key_export_object },                      \
-        { 0, NULL }                                                     \
+        OSSL_DISPATCH_END                                               \
     }
 
 #ifndef OPENSSL_NO_DSA
diff --git a/providers/implementations/encode_decode/decode_spki2typespki.c b/providers/implementations/encode_decode/decode_spki2typespki.c
index a5dbbb31ad..e9f8dadb78 100644
--- a/providers/implementations/encode_decode/decode_spki2typespki.c
+++ b/providers/implementations/encode_decode/decode_spki2typespki.c
@@ -120,5 +120,5 @@ const OSSL_DISPATCH ossl_SubjectPublicKeyInfo_der_to_der_decoder_functions[] = {
     { OSSL_FUNC_DECODER_NEWCTX, (void (*)(void))spki2typespki_newctx },
     { OSSL_FUNC_DECODER_FREECTX, (void (*)(void))spki2typespki_freectx },
     { OSSL_FUNC_DECODER_DECODE, (void (*)(void))spki2typespki_decode },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/encode_decode/encode_key2any.c b/providers/implementations/encode_decode/encode_key2any.c
index bd79228a4c..55b2b56766 100644
--- a/providers/implementations/encode_decode/encode_key2any.c
+++ b/providers/implementations/encode_decode/encode_key2any.c
@@ -1293,7 +1293,7 @@ static int key2any_encode(struct key2any_ctx_st *ctx, OSSL_CORE_BIO *cout,
           (void (*)(void))impl##_to_##kind##_##output##_free_object },      \
         { OSSL_FUNC_ENCODER_ENCODE,                                         \
           (void (*)(void))impl##_to_##kind##_##output##_encode },           \
-        { 0, NULL }                                                         \
+        OSSL_DISPATCH_END                                                   \
     }
 
 /*
diff --git a/providers/implementations/encode_decode/encode_key2blob.c b/providers/implementations/encode_decode/encode_key2blob.c
index 550bceb09f..ae1612aaf1 100644
--- a/providers/implementations/encode_decode/encode_key2blob.c
+++ b/providers/implementations/encode_decode/encode_key2blob.c
@@ -168,7 +168,7 @@ static int key2blob_encode(void *vctx, const void *key, int selection,
           (void (*)(void))impl##2blob_free_object },                    \
         { OSSL_FUNC_ENCODER_ENCODE,                                     \
           (void (*)(void))impl##2blob_encode },                         \
-        { 0, NULL }                                                     \
+        OSSL_DISPATCH_END                                               \
     }
 
 #ifndef OPENSSL_NO_EC
diff --git a/providers/implementations/encode_decode/encode_key2ms.c b/providers/implementations/encode_decode/encode_key2ms.c
index fe8c2dce43..d11affbfa9 100644
--- a/providers/implementations/encode_decode/encode_key2ms.c
+++ b/providers/implementations/encode_decode/encode_key2ms.c
@@ -222,7 +222,7 @@ static int key2pvk_encode(void *vctx, const void *key, int selection,
           (void (*)(void))impl##2##output##_free_object },                    \
         { OSSL_FUNC_ENCODER_ENCODE,                                           \
           (void (*)(void))impl##2##output##_encode },                         \
-        { 0, NULL }                                                           \
+        OSSL_DISPATCH_END                                                     \
     }
 
 #ifndef OPENSSL_NO_DSA
diff --git a/providers/implementations/encode_decode/encode_key2text.c b/providers/implementations/encode_decode/encode_key2text.c
index 11e45c7fb0..ff4de1926f 100644
--- a/providers/implementations/encode_decode/encode_key2text.c
+++ b/providers/implementations/encode_decode/encode_key2text.c
@@ -867,7 +867,7 @@ static int key2text_encode(void *vctx, const void *key, int selection,
           (void (*)(void))impl##2text_free_object },                    \
         { OSSL_FUNC_ENCODER_ENCODE,                                     \
           (void (*)(void))impl##2text_encode },                         \
-        { 0, NULL }                                                     \
+        OSSL_DISPATCH_END                                               \
     }
 
 #ifndef OPENSSL_NO_DH
diff --git a/providers/implementations/exchange/dh_exch.c b/providers/implementations/exchange/dh_exch.c
index 5d459e1c69..7d77e6aae8 100644
--- a/providers/implementations/exchange/dh_exch.c
+++ b/providers/implementations/exchange/dh_exch.c
@@ -507,5 +507,5 @@ const OSSL_DISPATCH ossl_dh_keyexch_functions[] = {
     { OSSL_FUNC_KEYEXCH_GET_CTX_PARAMS, (void (*)(void))dh_get_ctx_params },
     { OSSL_FUNC_KEYEXCH_GETTABLE_CTX_PARAMS,
       (void (*)(void))dh_gettable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/exchange/ecdh_exch.c b/providers/implementations/exchange/ecdh_exch.c
index 53b4249778..164417abc8 100644
--- a/providers/implementations/exchange/ecdh_exch.c
+++ b/providers/implementations/exchange/ecdh_exch.c
@@ -575,5 +575,5 @@ const OSSL_DISPATCH ossl_ecdh_keyexch_functions[] = {
     { OSSL_FUNC_KEYEXCH_GET_CTX_PARAMS, (void (*)(void))ecdh_get_ctx_params },
     { OSSL_FUNC_KEYEXCH_GETTABLE_CTX_PARAMS,
       (void (*)(void))ecdh_gettable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/exchange/ecx_exch.c b/providers/implementations/exchange/ecx_exch.c
index 374f436c89..335ec6f763 100644
--- a/providers/implementations/exchange/ecx_exch.c
+++ b/providers/implementations/exchange/ecx_exch.c
@@ -165,7 +165,7 @@ const OSSL_DISPATCH ossl_x25519_keyexch_functions[] = {
     { OSSL_FUNC_KEYEXCH_SET_PEER, (void (*)(void))ecx_set_peer },
     { OSSL_FUNC_KEYEXCH_FREECTX, (void (*)(void))ecx_freectx },
     { OSSL_FUNC_KEYEXCH_DUPCTX, (void (*)(void))ecx_dupctx },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_x448_keyexch_functions[] = {
@@ -175,5 +175,5 @@ const OSSL_DISPATCH ossl_x448_keyexch_functions[] = {
     { OSSL_FUNC_KEYEXCH_SET_PEER, (void (*)(void))ecx_set_peer },
     { OSSL_FUNC_KEYEXCH_FREECTX, (void (*)(void))ecx_freectx },
     { OSSL_FUNC_KEYEXCH_DUPCTX, (void (*)(void))ecx_dupctx },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/exchange/kdf_exch.c b/providers/implementations/exchange/kdf_exch.c
index 5fa444dc3d..b1be99f2e2 100644
--- a/providers/implementations/exchange/kdf_exch.c
+++ b/providers/implementations/exchange/kdf_exch.c
@@ -207,7 +207,7 @@ KDF_SETTABLE_CTX_PARAMS(scrypt, "SCRYPT")
         { OSSL_FUNC_KEYEXCH_SET_CTX_PARAMS, (void (*)(void))kdf_set_ctx_params }, \
         { OSSL_FUNC_KEYEXCH_SETTABLE_CTX_PARAMS, \
         (void (*)(void))kdf_##funcname##_settable_ctx_params }, \
-        { 0, NULL } \
+        OSSL_DISPATCH_END \
     };
 
 KDF_KEYEXCH_FUNCTIONS(tls1_prf)
diff --git a/providers/implementations/include/prov/ciphercommon.h b/providers/implementations/include/prov/ciphercommon.h
index 0e5d9f2681..62903b16bb 100644
--- a/providers/implementations/include/prov/ciphercommon.h
+++ b/providers/implementations/include/prov/ciphercommon.h
@@ -154,7 +154,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = {                \
       (void (*)(void))ossl_cipher_generic_gettable_ctx_params },               \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))ossl_cipher_generic_settable_ctx_params },                \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 # define IMPLEMENT_var_keylen_cipher_func(alg, UCALG, lcmode, UCMODE, flags,    \
@@ -181,7 +181,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = {                \
       (void (*)(void))ossl_cipher_generic_gettable_ctx_params },               \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))ossl_cipher_var_keylen_settable_ctx_params },             \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 };
 
 
diff --git a/providers/implementations/include/prov/ciphercommon_aead.h b/providers/implementations/include/prov/ciphercommon_aead.h
index ffbae98089..face9c9e36 100644
--- a/providers/implementations/include/prov/ciphercommon_aead.h
+++ b/providers/implementations/include/prov/ciphercommon_aead.h
@@ -47,7 +47,7 @@ const OSSL_DISPATCH ossl_##alg##kbits##lc##_functions[] = {                    \
       (void (*)(void))ossl_cipher_aead_gettable_ctx_params },                  \
     { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
       (void (*)(void))ossl_cipher_aead_settable_ctx_params },                  \
-    { 0, NULL }                                                                \
+    OSSL_DISPATCH_END                                                          \
 }
 
 #endif
diff --git a/providers/implementations/kdfs/argon2.c b/providers/implementations/kdfs/argon2.c
index 6a4807b5c6..4a0ffc573d 100644
--- a/providers/implementations/kdfs/argon2.c
+++ b/providers/implementations/kdfs/argon2.c
@@ -1531,7 +1531,7 @@ const OSSL_DISPATCH ossl_kdf_argon2i_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_argon2_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_argon2_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_kdf_argon2d_functions[] = {
@@ -1545,7 +1545,7 @@ const OSSL_DISPATCH ossl_kdf_argon2d_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_argon2_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_argon2_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_kdf_argon2id_functions[] = {
@@ -1559,7 +1559,7 @@ const OSSL_DISPATCH ossl_kdf_argon2id_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_argon2_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_argon2_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 #endif
diff --git a/providers/implementations/kdfs/hkdf.c b/providers/implementations/kdfs/hkdf.c
index 867d27c79e..2b81dea60a 100644
--- a/providers/implementations/kdfs/hkdf.c
+++ b/providers/implementations/kdfs/hkdf.c
@@ -394,7 +394,7 @@ const OSSL_DISPATCH ossl_kdf_hkdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_hkdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_hkdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /*
@@ -810,5 +810,5 @@ const OSSL_DISPATCH ossl_kdf_tls1_3_kdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_hkdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_hkdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/hmacdrbg_kdf.c b/providers/implementations/kdfs/hmacdrbg_kdf.c
index 6a37541120..1ffb368d01 100644
--- a/providers/implementations/kdfs/hmacdrbg_kdf.c
+++ b/providers/implementations/kdfs/hmacdrbg_kdf.c
@@ -255,5 +255,5 @@ const OSSL_DISPATCH ossl_kdf_hmac_drbg_functions[] = {
       (void(*)(void))hmac_drbg_kdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS,
       (void(*)(void))hmac_drbg_kdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/kbkdf.c b/providers/implementations/kdfs/kbkdf.c
index 1e910a9c8b..a1a467249f 100644
--- a/providers/implementations/kdfs/kbkdf.c
+++ b/providers/implementations/kdfs/kbkdf.c
@@ -488,5 +488,5 @@ const OSSL_DISPATCH ossl_kdf_kbkdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kbkdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kbkdf_get_ctx_params },
-    { 0, NULL },
+    OSSL_DISPATCH_END,
 };
diff --git a/providers/implementations/kdfs/krb5kdf.c b/providers/implementations/kdfs/krb5kdf.c
index b0fabd8ff2..5143462f4f 100644
--- a/providers/implementations/kdfs/krb5kdf.c
+++ b/providers/implementations/kdfs/krb5kdf.c
@@ -230,7 +230,7 @@ const OSSL_DISPATCH ossl_kdf_krb5kdf_functions[] = {
       (void(*)(void))krb5kdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS,
       (void(*)(void))krb5kdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 #ifndef OPENSSL_NO_DES
diff --git a/providers/implementations/kdfs/pbkdf1.c b/providers/implementations/kdfs/pbkdf1.c
index e76ed4b7e1..713d51d597 100644
--- a/providers/implementations/kdfs/pbkdf1.c
+++ b/providers/implementations/kdfs/pbkdf1.c
@@ -260,5 +260,5 @@ const OSSL_DISPATCH ossl_kdf_pbkdf1_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_pbkdf1_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_pbkdf1_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/pbkdf2.c b/providers/implementations/kdfs/pbkdf2.c
index 2506a96f7c..fb2cd87fb7 100644
--- a/providers/implementations/kdfs/pbkdf2.c
+++ b/providers/implementations/kdfs/pbkdf2.c
@@ -288,7 +288,7 @@ const OSSL_DISPATCH ossl_kdf_pbkdf2_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_pbkdf2_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_pbkdf2_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /*
diff --git a/providers/implementations/kdfs/pkcs12kdf.c b/providers/implementations/kdfs/pkcs12kdf.c
index 3495556302..38303a7464 100644
--- a/providers/implementations/kdfs/pkcs12kdf.c
+++ b/providers/implementations/kdfs/pkcs12kdf.c
@@ -315,5 +315,5 @@ const OSSL_DISPATCH ossl_kdf_pkcs12_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_pkcs12_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_pkcs12_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/pvkkdf.c b/providers/implementations/kdfs/pvkkdf.c
index 00be036c8e..7e7cf36b00 100644
--- a/providers/implementations/kdfs/pvkkdf.c
+++ b/providers/implementations/kdfs/pvkkdf.c
@@ -244,5 +244,5 @@ const OSSL_DISPATCH ossl_kdf_pvk_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_pvk_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_pvk_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/scrypt.c b/providers/implementations/kdfs/scrypt.c
index 253efeb16d..94d06f29ee 100644
--- a/providers/implementations/kdfs/scrypt.c
+++ b/providers/implementations/kdfs/scrypt.c
@@ -317,7 +317,7 @@ const OSSL_DISPATCH ossl_kdf_scrypt_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_scrypt_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_scrypt_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 #define R(a,b) (((a) << (b)) | ((a) >> (32 - (b))))
diff --git a/providers/implementations/kdfs/sshkdf.c b/providers/implementations/kdfs/sshkdf.c
index 67170264fe..50d2943204 100644
--- a/providers/implementations/kdfs/sshkdf.c
+++ b/providers/implementations/kdfs/sshkdf.c
@@ -245,7 +245,7 @@ const OSSL_DISPATCH ossl_kdf_sshkdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))kdf_sshkdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))kdf_sshkdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 static int SSHKDF(const EVP_MD *evp_md,
diff --git a/providers/implementations/kdfs/sskdf.c b/providers/implementations/kdfs/sskdf.c
index 68408bb03b..68b3db4b11 100644
--- a/providers/implementations/kdfs/sskdf.c
+++ b/providers/implementations/kdfs/sskdf.c
@@ -570,7 +570,7 @@ const OSSL_DISPATCH ossl_kdf_sskdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))sskdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))sskdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_kdf_x963_kdf_functions[] = {
@@ -585,5 +585,5 @@ const OSSL_DISPATCH ossl_kdf_x963_kdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))sskdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))sskdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kdfs/tls1_prf.c b/providers/implementations/kdfs/tls1_prf.c
index 2c2dbf31cc..32662360e9 100644
--- a/providers/implementations/kdfs/tls1_prf.c
+++ b/providers/implementations/kdfs/tls1_prf.c
@@ -311,7 +311,7 @@ const OSSL_DISPATCH ossl_kdf_tls1_prf_functions[] = {
       (void(*)(void))kdf_tls1_prf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS,
       (void(*)(void))kdf_tls1_prf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /*
diff --git a/providers/implementations/kdfs/x942kdf.c b/providers/implementations/kdfs/x942kdf.c
index d52c990e86..4539c44872 100644
--- a/providers/implementations/kdfs/x942kdf.c
+++ b/providers/implementations/kdfs/x942kdf.c
@@ -626,5 +626,5 @@ const OSSL_DISPATCH ossl_kdf_x942_kdf_functions[] = {
     { OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS,
       (void(*)(void))x942kdf_gettable_ctx_params },
     { OSSL_FUNC_KDF_GET_CTX_PARAMS, (void(*)(void))x942kdf_get_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kem/ec_kem.c b/providers/implementations/kem/ec_kem.c
index cdec509f06..6a7abbc75c 100644
--- a/providers/implementations/kem/ec_kem.c
+++ b/providers/implementations/kem/ec_kem.c
@@ -810,5 +810,5 @@ const OSSL_DISPATCH ossl_ec_asym_kem_functions[] = {
       (void (*)(void))eckem_auth_encapsulate_init },
     { OSSL_FUNC_KEM_AUTH_DECAPSULATE_INIT,
       (void (*)(void))eckem_auth_decapsulate_init },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kem/ecx_kem.c b/providers/implementations/kem/ecx_kem.c
index b868afdfbc..87ec09c50f 100644
--- a/providers/implementations/kem/ecx_kem.c
+++ b/providers/implementations/kem/ecx_kem.c
@@ -700,5 +700,5 @@ const OSSL_DISPATCH ossl_ecx_asym_kem_functions[] = {
       (void (*)(void))ecxkem_auth_encapsulate_init },
     { OSSL_FUNC_KEM_AUTH_DECAPSULATE_INIT,
       (void (*)(void))ecxkem_auth_decapsulate_init },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/kem/rsa_kem.c b/providers/implementations/kem/rsa_kem.c
index 365ae3d7d6..f0a3462f8e 100644
--- a/providers/implementations/kem/rsa_kem.c
+++ b/providers/implementations/kem/rsa_kem.c
@@ -361,5 +361,5 @@ const OSSL_DISPATCH ossl_rsa_asym_kem_functions[] = {
       (void (*)(void))rsakem_set_ctx_params },
     { OSSL_FUNC_KEM_SETTABLE_CTX_PARAMS,
       (void (*)(void))rsakem_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/keymgmt/dh_kmgmt.c b/providers/implementations/keymgmt/dh_kmgmt.c
index 1de182ce6f..d0a101ab37 100644
--- a/providers/implementations/keymgmt/dh_kmgmt.c
+++ b/providers/implementations/keymgmt/dh_kmgmt.c
@@ -841,7 +841,7 @@ const OSSL_DISPATCH ossl_dh_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dh_export },
     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dh_export_types },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dh_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 /* For any DH key, we use the "DH" algorithms regardless of sub-type. */
@@ -875,5 +875,5 @@ const OSSL_DISPATCH ossl_dhx_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
       (void (*)(void))dhx_query_operation_name },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dh_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/keymgmt/dsa_kmgmt.c b/providers/implementations/keymgmt/dsa_kmgmt.c
index 24316028b5..9aa699c289 100644
--- a/providers/implementations/keymgmt/dsa_kmgmt.c
+++ b/providers/implementations/keymgmt/dsa_kmgmt.c
@@ -672,5 +672,5 @@ const OSSL_DISPATCH ossl_dsa_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dsa_export },
     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dsa_export_types },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))dsa_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/keymgmt/ec_kmgmt.c b/providers/implementations/keymgmt/ec_kmgmt.c
index 990d03794a..e79a50df42 100644
--- a/providers/implementations/keymgmt/ec_kmgmt.c
+++ b/providers/implementations/keymgmt/ec_kmgmt.c
@@ -1444,7 +1444,7 @@ const OSSL_DISPATCH ossl_ec_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
       (void (*)(void))ec_query_operation_name },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))ec_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 #ifndef FIPS_MODULE
@@ -1475,7 +1475,7 @@ const OSSL_DISPATCH ossl_sm2_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
       (void (*)(void))sm2_query_operation_name },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))ec_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 # endif
 #endif
diff --git a/providers/implementations/keymgmt/ecx_kmgmt.c b/providers/implementations/keymgmt/ecx_kmgmt.c
index 351de5a40b..f79fe9fde7 100644
--- a/providers/implementations/keymgmt/ecx_kmgmt.c
+++ b/providers/implementations/keymgmt/ecx_kmgmt.c
@@ -840,7 +840,7 @@ static int ed448_validate(const void *keydata, int selection, int checktype)
         { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))ecx_gen_cleanup }, \
         { OSSL_FUNC_KEYMGMT_LOAD, (void (*)(void))ecx_load }, \
         { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))ecx_dup }, \
-        { 0, NULL } \
+        OSSL_DISPATCH_END \
     };
 
 MAKE_KEYMGMT_FUNCTIONS(x25519)
diff --git a/providers/implementations/keymgmt/kdf_legacy_kmgmt.c b/providers/implementations/keymgmt/kdf_legacy_kmgmt.c
index 57fc7b5af0..40885ee019 100644
--- a/providers/implementations/keymgmt/kdf_legacy_kmgmt.c
+++ b/providers/implementations/keymgmt/kdf_legacy_kmgmt.c
@@ -100,5 +100,5 @@ const OSSL_DISPATCH ossl_kdf_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))kdf_newdata },
     { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))kdf_freedata },
     { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))kdf_has },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/keymgmt/mac_legacy_kmgmt.c b/providers/implementations/keymgmt/mac_legacy_kmgmt.c
index 4c5b7cc3c4..114d9e9fe9 100644
--- a/providers/implementations/keymgmt/mac_legacy_kmgmt.c
+++ b/providers/implementations/keymgmt/mac_legacy_kmgmt.c
@@ -542,7 +542,7 @@ const OSSL_DISPATCH ossl_mac_legacy_keymgmt_functions[] = {
         (void (*)(void))mac_gen_settable_params },
     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_cmac_legacy_keymgmt_functions[] = {
@@ -564,6 +564,6 @@ const OSSL_DISPATCH ossl_cmac_legacy_keymgmt_functions[] = {
         (void (*)(void))cmac_gen_settable_params },
     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
diff --git a/providers/implementations/keymgmt/rsa_kmgmt.c b/providers/implementations/keymgmt/rsa_kmgmt.c
index 7e67316deb..41b5390bf5 100644
--- a/providers/implementations/keymgmt/rsa_kmgmt.c
+++ b/providers/implementations/keymgmt/rsa_kmgmt.c
@@ -715,7 +715,7 @@ const OSSL_DISPATCH ossl_rsa_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))rsa_export },
     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))rsa_export_types },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = {
@@ -740,5 +740,5 @@ const OSSL_DISPATCH ossl_rsapss_keymgmt_functions[] = {
     { OSSL_FUNC_KEYMGMT_QUERY_OPERATION_NAME,
       (void (*)(void))rsa_query_operation_name },
     { OSSL_FUNC_KEYMGMT_DUP, (void (*)(void))rsa_dup },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/blake2_mac_impl.c b/providers/implementations/macs/blake2_mac_impl.c
index 3c6b0c2c0c..e52544fc5b 100644
--- a/providers/implementations/macs/blake2_mac_impl.c
+++ b/providers/implementations/macs/blake2_mac_impl.c
@@ -250,5 +250,5 @@ const OSSL_DISPATCH BLAKE2_FUNCTIONS[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))blake2_mac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))blake2_mac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/cmac_prov.c b/providers/implementations/macs/cmac_prov.c
index fc9f911beb..5a2421ccfc 100644
--- a/providers/implementations/macs/cmac_prov.c
+++ b/providers/implementations/macs/cmac_prov.c
@@ -229,5 +229,5 @@ const OSSL_DISPATCH ossl_cmac_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))cmac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))cmac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/gmac_prov.c b/providers/implementations/macs/gmac_prov.c
index 3dd38ecd7c..5455ffc490 100644
--- a/providers/implementations/macs/gmac_prov.c
+++ b/providers/implementations/macs/gmac_prov.c
@@ -255,5 +255,5 @@ const OSSL_DISPATCH ossl_gmac_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))gmac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))gmac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/hmac_prov.c b/providers/implementations/macs/hmac_prov.c
index c3d9f15f81..32940e6a0b 100644
--- a/providers/implementations/macs/hmac_prov.c
+++ b/providers/implementations/macs/hmac_prov.c
@@ -344,5 +344,5 @@ const OSSL_DISPATCH ossl_hmac_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))hmac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))hmac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/kmac_prov.c b/providers/implementations/macs/kmac_prov.c
index 56d434a9ed..b38dba2d7d 100644
--- a/providers/implementations/macs/kmac_prov.c
+++ b/providers/implementations/macs/kmac_prov.c
@@ -605,7 +605,7 @@ const OSSL_DISPATCH ossl_kmac128_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))kmac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))kmac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_kmac256_functions[] = {
@@ -621,5 +621,5 @@ const OSSL_DISPATCH ossl_kmac256_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))kmac_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))kmac_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/poly1305_prov.c b/providers/implementations/macs/poly1305_prov.c
index f922802ea7..2d10d10521 100644
--- a/providers/implementations/macs/poly1305_prov.c
+++ b/providers/implementations/macs/poly1305_prov.c
@@ -183,5 +183,5 @@ const OSSL_DISPATCH ossl_poly1305_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))poly1305_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))poly1305_set_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/macs/siphash_prov.c b/providers/implementations/macs/siphash_prov.c
index a28cdb33ac..ded324acb6 100644
--- a/providers/implementations/macs/siphash_prov.c
+++ b/providers/implementations/macs/siphash_prov.c
@@ -233,5 +233,5 @@ const OSSL_DISPATCH ossl_siphash_functions[] = {
     { OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS,
       (void (*)(void))siphash_settable_ctx_params },
     { OSSL_FUNC_MAC_SET_CTX_PARAMS, (void (*)(void))siphash_set_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/rands/drbg_ctr.c b/providers/implementations/rands/drbg_ctr.c
index 89e0ca5573..0782595798 100644
--- a/providers/implementations/rands/drbg_ctr.c
+++ b/providers/implementations/rands/drbg_ctr.c
@@ -747,5 +747,5 @@ const OSSL_DISPATCH ossl_drbg_ctr_functions[] = {
       (void(*)(void))drbg_ctr_verify_zeroization },
     { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))ossl_drbg_get_seed },
     { OSSL_FUNC_RAND_CLEAR_SEED, (void(*)(void))ossl_drbg_clear_seed },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/rands/drbg_hash.c b/providers/implementations/rands/drbg_hash.c
index 0761b403da..b2017a4f06 100644
--- a/providers/implementations/rands/drbg_hash.c
+++ b/providers/implementations/rands/drbg_hash.c
@@ -521,5 +521,5 @@ const OSSL_DISPATCH ossl_drbg_hash_functions[] = {
       (void(*)(void))drbg_hash_verify_zeroization },
     { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))ossl_drbg_get_seed },
     { OSSL_FUNC_RAND_CLEAR_SEED, (void(*)(void))ossl_drbg_clear_seed },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/rands/drbg_hmac.c b/providers/implementations/rands/drbg_hmac.c
index f4b31a0f1b..0e4bc8082a 100644
--- a/providers/implementations/rands/drbg_hmac.c
+++ b/providers/implementations/rands/drbg_hmac.c
@@ -424,5 +424,5 @@ const OSSL_DISPATCH ossl_drbg_ossl_hmac_functions[] = {
       (void(*)(void))drbg_hmac_verify_zeroization },
     { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))ossl_drbg_get_seed },
     { OSSL_FUNC_RAND_CLEAR_SEED, (void(*)(void))ossl_drbg_clear_seed },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/rands/seed_src.c b/providers/implementations/rands/seed_src.c
index 5e599775eb..ee7dfc35b2 100644
--- a/providers/implementations/rands/seed_src.c
+++ b/providers/implementations/rands/seed_src.c
@@ -245,5 +245,5 @@ const OSSL_DISPATCH ossl_seed_src_functions[] = {
       (void(*)(void))seed_src_verify_zeroization },
     { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))seed_get_seed },
     { OSSL_FUNC_RAND_CLEAR_SEED, (void(*)(void))seed_clear_seed },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/rands/test_rng.c b/providers/implementations/rands/test_rng.c
index 4e7fed0fc7..46d18f28c5 100644
--- a/providers/implementations/rands/test_rng.c
+++ b/providers/implementations/rands/test_rng.c
@@ -292,5 +292,5 @@ const OSSL_DISPATCH ossl_test_rng_functions[] = {
     { OSSL_FUNC_RAND_VERIFY_ZEROIZATION,
       (void(*)(void))test_rng_verify_zeroization },
     { OSSL_FUNC_RAND_GET_SEED, (void(*)(void))test_rng_get_seed },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/signature/dsa_sig.c b/providers/implementations/signature/dsa_sig.c
index 211faa8da9..c840032ef4 100644
--- a/providers/implementations/signature/dsa_sig.c
+++ b/providers/implementations/signature/dsa_sig.c
@@ -610,5 +610,5 @@ const OSSL_DISPATCH ossl_dsa_signature_functions[] = {
       (void (*)(void))dsa_set_ctx_md_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
       (void (*)(void))dsa_settable_ctx_md_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/signature/ecdsa_sig.c b/providers/implementations/signature/ecdsa_sig.c
index e13be6fdd3..ec01b74173 100644
--- a/providers/implementations/signature/ecdsa_sig.c
+++ b/providers/implementations/signature/ecdsa_sig.c
@@ -635,5 +635,5 @@ const OSSL_DISPATCH ossl_ecdsa_signature_functions[] = {
       (void (*)(void))ecdsa_set_ctx_md_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
       (void (*)(void))ecdsa_settable_ctx_md_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/signature/eddsa_sig.c b/providers/implementations/signature/eddsa_sig.c
index 3321f1a9c2..acc6f5e4e7 100644
--- a/providers/implementations/signature/eddsa_sig.c
+++ b/providers/implementations/signature/eddsa_sig.c
@@ -607,7 +607,7 @@ const OSSL_DISPATCH ossl_ed25519_signature_functions[] = {
     { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))eddsa_set_ctx_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
       (void (*)(void))eddsa_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 const OSSL_DISPATCH ossl_ed448_signature_functions[] = {
@@ -628,7 +628,7 @@ const OSSL_DISPATCH ossl_ed448_signature_functions[] = {
     { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))eddsa_set_ctx_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
       (void (*)(void))eddsa_settable_ctx_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 #ifdef S390X_EC_ASM
diff --git a/providers/implementations/signature/mac_legacy_sig.c b/providers/implementations/signature/mac_legacy_sig.c
index d4bcc020da..d3172f86b3 100644
--- a/providers/implementations/signature/mac_legacy_sig.c
+++ b/providers/implementations/signature/mac_legacy_sig.c
@@ -256,7 +256,7 @@ MAC_SETTABLE_CTX_PARAMS(cmac, "CMAC")
           (void (*)(void))mac_set_ctx_params }, \
         { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS, \
           (void (*)(void))mac_##funcname##_settable_ctx_params }, \
-        { 0, NULL } \
+        OSSL_DISPATCH_END \
     };
 
 MAC_SIGNATURE_FUNCTIONS(hmac)
diff --git a/providers/implementations/signature/rsa_sig.c b/providers/implementations/signature/rsa_sig.c
index 4ebb6517d6..e4c08617d2 100644
--- a/providers/implementations/signature/rsa_sig.c
+++ b/providers/implementations/signature/rsa_sig.c
@@ -1488,5 +1488,5 @@ const OSSL_DISPATCH ossl_rsa_signature_functions[] = {
       (void (*)(void))rsa_set_ctx_md_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
       (void (*)(void))rsa_settable_ctx_md_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/signature/sm2_sig.c b/providers/implementations/signature/sm2_sig.c
index 15826d5fd2..aef9aa0d31 100644
--- a/providers/implementations/signature/sm2_sig.c
+++ b/providers/implementations/signature/sm2_sig.c
@@ -559,5 +559,5 @@ const OSSL_DISPATCH ossl_sm2_signature_functions[] = {
       (void (*)(void))sm2sig_set_ctx_md_params },
     { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
       (void (*)(void))sm2sig_settable_ctx_md_params },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
diff --git a/providers/implementations/storemgmt/file_store.c b/providers/implementations/storemgmt/file_store.c
index 3f1d1ff2de..4895f4bc8f 100644
--- a/providers/implementations/storemgmt/file_store.c
+++ b/providers/implementations/storemgmt/file_store.c
@@ -782,5 +782,5 @@ const OSSL_DISPATCH ossl_file_store_functions[] = {
     { OSSL_FUNC_STORE_LOAD, (void (*)(void))file_load },
     { OSSL_FUNC_STORE_EOF, (void (*)(void))file_eof },
     { OSSL_FUNC_STORE_CLOSE, (void (*)(void))file_close },
-    { 0, NULL },
+    OSSL_DISPATCH_END,
 };
diff --git a/providers/implementations/storemgmt/file_store_any2obj.c b/providers/implementations/storemgmt/file_store_any2obj.c
index b0be1c4d22..bcf175fff2 100644
--- a/providers/implementations/storemgmt/file_store_any2obj.c
+++ b/providers/implementations/storemgmt/file_store_any2obj.c
@@ -246,7 +246,7 @@ static int pvk2obj_decode(void *provctx, OSSL_CORE_BIO *cin, int selection,
         { OSSL_FUNC_DECODER_NEWCTX, (void (*)(void))any2obj_newctx },        \
         { OSSL_FUNC_DECODER_FREECTX, (void (*)(void))any2obj_freectx },      \
         { OSSL_FUNC_DECODER_DECODE, (void (*)(void))fromtype##2obj_decode }, \
-        { 0, NULL }                                                          \
+        OSSL_DISPATCH_END                                                    \
     }
 
 MAKE_DECODER(der, OSSL_OBJECT_UNKNOWN);
diff --git a/providers/implementations/storemgmt/winstore_store.c b/providers/implementations/storemgmt/winstore_store.c
index a7d041b697..570bbe337d 100644
--- a/providers/implementations/storemgmt/winstore_store.c
+++ b/providers/implementations/storemgmt/winstore_store.c
@@ -323,5 +323,5 @@ const OSSL_DISPATCH ossl_winstore_store_functions[] = {
     { OSSL_FUNC_STORE_LOAD, (void (*)(void))winstore_load },
     { OSSL_FUNC_STORE_EOF, (void (*)(void))winstore_eof },
     { OSSL_FUNC_STORE_CLOSE, (void (*)(void))winstore_close },
-    { 0, NULL },
+    OSSL_DISPATCH_END,
 };
diff --git a/providers/legacyprov.c b/providers/legacyprov.c
index 1280ca4313..690c3a8bda 100644
--- a/providers/legacyprov.c
+++ b/providers/legacyprov.c
@@ -193,7 +193,7 @@ static const OSSL_DISPATCH legacy_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))legacy_gettable_params },
     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))legacy_get_params },
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))legacy_query },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 int OSSL_provider_init(const OSSL_CORE_HANDLE *handle,
diff --git a/providers/nullprov.c b/providers/nullprov.c
index d5b4c05d93..c79ffccff4 100644
--- a/providers/nullprov.c
+++ b/providers/nullprov.c
@@ -64,7 +64,7 @@ static const OSSL_DISPATCH null_dispatch_table[] = {
     { OSSL_FUNC_PROVIDER_GETTABLE_PARAMS, (void (*)(void))null_gettable_params },
     { OSSL_FUNC_PROVIDER_GET_PARAMS, (void (*)(void))null_get_params },
     { OSSL_FUNC_PROVIDER_QUERY_OPERATION, (void (*)(void))null_query },
-    { 0, NULL }
+    OSSL_DISPATCH_END
 };
 
 int ossl_null_provider_init(const OSSL_CORE_HANDLE *handle,