Avoid strict-prototype compiler errors

Commit 4b9d7f7c107f01a61600fddcd8cde3812d0366a2 added the
-Werror=strict-prototypes parameter to the build process, but left
behind 28 function definitions using "()" instead of "(void)".  Most
of these definitions could not cause compiler errors for various
reasons (such as an accompanying prototype), but a few could cause
errors in gcc depending on the build configuration.

For consistency and safety, add "(void)" to all 28 definitions.

[ghudson@mit.edu: rewrote commit message]

21 files changed, 28 insertions, 28 deletions

diff --git a/src/clients/kcpytkt/kcpytkt.c b/src/clients/kcpytkt/kcpytkt.c
index 0b88022..f1d50e5 100644
--- a/src/clients/kcpytkt/kcpytkt.c
+++ b/src/clients/kcpytkt/kcpytkt.c
@@ -10,7 +10,7 @@ static char *prog;
 static int quiet = 0;
 
 static void
-xusage()
+xusage(void)
 {
     fprintf(stderr, "xusage: %s [-c from_ccache] [-e etype] [-f flags] "
             "dest_ccache service1 service2 ...\n", prog);
diff --git a/src/clients/kdeltkt/kdeltkt.c b/src/clients/kdeltkt/kdeltkt.c
index cd0bf63..66a32a8 100644
--- a/src/clients/kdeltkt/kdeltkt.c
+++ b/src/clients/kdeltkt/kdeltkt.c
@@ -10,7 +10,7 @@ static char *prog;
 static int quiet = 0;
 
 static void
-xusage()
+xusage(void)
 {
     fprintf(stderr, "xusage: %s [-c ccache] [-e etype] [-f flags] service1 "
             "service2 ...\n", prog);
diff --git a/src/clients/kinit/kinit.c b/src/clients/kinit/kinit.c
index 7a33ffa..b27b723 100644
--- a/src/clients/kinit/kinit.c
+++ b/src/clients/kinit/kinit.c
@@ -55,7 +55,7 @@ get_name_from_os(void)
 #else /* HAVE_PWD_H */
 #ifdef _WIN32
 static char *
-get_name_from_os()
+get_name_from_os(void)
 {
     static char name[1024];
     DWORD name_size = sizeof(name);
@@ -69,7 +69,7 @@ get_name_from_os()
 }
 #else /* _WIN32 */
 static char *
-get_name_from_os()
+get_name_from_os(void)
 {
     return NULL;
 }
diff --git a/src/clients/kinit/kinit_kdb.c b/src/clients/kinit/kinit_kdb.c
index fbd174b..4e7cd50 100644
--- a/src/clients/kinit/kinit_kdb.c
+++ b/src/clients/kinit/kinit_kdb.c
@@ -69,7 +69,7 @@ kinit_kdb_init(krb5_context *pcontext, char *realm)
 }
 
 void
-kinit_kdb_fini()
+kinit_kdb_fini(void)
 {
     kadm5_destroy(server_handle);
 }
diff --git a/src/clients/klist/klist.c b/src/clients/klist/klist.c
index b5808e5..cfa1d2e 100644
--- a/src/clients/klist/klist.c
+++ b/src/clients/klist/klist.c
@@ -358,7 +358,7 @@ do_keytab(const char *name)
 }
 
 static void
-list_all_ccaches()
+list_all_ccaches(void)
 {
     krb5_error_code ret;
     krb5_ccache cache;
@@ -450,7 +450,7 @@ show_all_ccaches(void)
 }
 
 static void
-do_ccache()
+do_ccache(void)
 {
     krb5_error_code ret;
     krb5_ccache cache;
diff --git a/src/kadmin/cli/kadmin.c b/src/kadmin/cli/kadmin.c
index 23b64b0..c1256f7 100644
--- a/src/kadmin/cli/kadmin.c
+++ b/src/kadmin/cli/kadmin.c
@@ -607,7 +607,7 @@ kadmin_startup(int argc, char *argv[], char **request_out, char ***args_out)
 }
 
 int
-quit()
+quit(void)
 {
     kadm5_ret_t retval;
 
diff --git a/src/kadmin/dbutil/kdb5_util.c b/src/kadmin/dbutil/kdb5_util.c
index 55d529f..b9b61e3 100644
--- a/src/kadmin/dbutil/kdb5_util.c
+++ b/src/kadmin/dbutil/kdb5_util.c
@@ -367,7 +367,7 @@ main(int argc, char *argv[])
  * program is run).
  */
 static int
-open_db_and_mkey()
+open_db_and_mkey(void)
 {
     krb5_error_code retval;
     krb5_data scratch, pwd, seed;
@@ -489,7 +489,7 @@ open_db_and_mkey()
 #endif
 
 int
-quit()
+quit(void)
 {
     krb5_error_code retval;
     static krb5_boolean finished = 0;
diff --git a/src/kdc/main.c b/src/kdc/main.c
index bfdfef5..ad1d1bf 100644
--- a/src/kdc/main.c
+++ b/src/kdc/main.c
@@ -854,7 +854,7 @@ write_pid_file(const char *path)
 }
 
 static void
-finish_realms()
+finish_realms(void)
 {
     int i;
 
diff --git a/src/kprop/kpropd.c b/src/kprop/kpropd.c
index 8da9c0f..e7ce31f 100644
--- a/src/kprop/kpropd.c
+++ b/src/kprop/kpropd.c
@@ -376,7 +376,7 @@ get_wildcard_addr(struct addrinfo **res)
 }
 
 static void
-do_standalone()
+do_standalone(void)
 {
     struct sockaddr_in frominet;
     struct addrinfo *res;
@@ -630,7 +630,7 @@ full_resync(CLIENT *clnt)
  * Returns non-zero on failure due to errors.
  */
 krb5_error_code
-do_iprop()
+do_iprop(void)
 {
     kadm5_ret_t retval;
     krb5_principal iprop_svc_principal = NULL;
diff --git a/src/lib/crypto/builtin/enc_provider/aes.c b/src/lib/crypto/builtin/enc_provider/aes.c
index 7fa9449..39e2a84 100644
--- a/src/lib/crypto/builtin/enc_provider/aes.c
+++ b/src/lib/crypto/builtin/enc_provider/aes.c
@@ -69,7 +69,7 @@ void k5_iEnc256_CBC(struct aes_data *data);
 void k5_iDec256_CBC(struct aes_data *data);
 
 static krb5_boolean
-aesni_supported_by_cpu()
+aesni_supported_by_cpu(void)
 {
     unsigned int a, b, c, d;
 
diff --git a/src/lib/crypto/openssl/hmac.c b/src/lib/crypto/openssl/hmac.c
index bf12b8d..799d700 100644
--- a/src/lib/crypto/openssl/hmac.c
+++ b/src/lib/crypto/openssl/hmac.c
@@ -70,7 +70,7 @@
 
 #define HMAC_CTX_new compat_hmac_ctx_new
 static HMAC_CTX *
-compat_hmac_ctx_new()
+compat_hmac_ctx_new(void)
 {
     HMAC_CTX *ctx;
 
diff --git a/src/lib/krb5/ccache/t_memory.c b/src/lib/krb5/ccache/t_memory.c
index 6d103a0..0f94e82 100644
--- a/src/lib/krb5/ccache/t_memory.c
+++ b/src/lib/krb5/ccache/t_memory.c
@@ -85,7 +85,7 @@ krb5_creds test_creds = {
 };
 
 void
-init_test_cred()
+init_test_cred(void)
 {
     test_creds.client = (krb5_principal) malloc(sizeof(krb5_data *)*3);
     test_creds.client[0] = &client1;
@@ -104,7 +104,7 @@ init_test_cred()
     };
 
 void
-mcc_test()
+mcc_test(void)
 {
     krb5_ccache id;
     krb5_creds creds;
diff --git a/src/lib/krb5/ccache/t_stdio.c b/src/lib/krb5/ccache/t_stdio.c
index 15185e3..06a9c2d 100644
--- a/src/lib/krb5/ccache/t_stdio.c
+++ b/src/lib/krb5/ccache/t_stdio.c
@@ -98,7 +98,7 @@ krb5_creds test_creds = {
 };
 
 void
-init_test_cred()
+init_test_cred(void)
 {
     test_creds.client = (krb5_principal) malloc(sizeof(krb5_data *)*3);
     test_creds.client[0] = &client1;
@@ -118,7 +118,7 @@ init_test_cred()
 
 int flags = 0;
 void
-scc_test()
+scc_test(void)
 {
     krb5_ccache id;
     krb5_creds creds;
diff --git a/src/plugins/kdb/db2/libdb2/btree/bt_debug.c b/src/plugins/kdb/db2/libdb2/btree/bt_debug.c
index bc71076..5a955e0 100644
--- a/src/plugins/kdb/db2/libdb2/btree/bt_debug.c
+++ b/src/plugins/kdb/db2/libdb2/btree/bt_debug.c
@@ -56,7 +56,7 @@ static FILE *tracefp;
  *	initialize debugging.
  */
 static void
-__bt_dinit()
+__bt_dinit(void)
 {
 	static int first = 1;
 
diff --git a/src/plugins/kdb/db2/libdb2/btree/bt_open.c b/src/plugins/kdb/db2/libdb2/btree/bt_open.c
index 0bb19d7..56bab19 100644
--- a/src/plugins/kdb/db2/libdb2/btree/bt_open.c
+++ b/src/plugins/kdb/db2/libdb2/btree/bt_open.c
@@ -390,7 +390,7 @@ nroot(BTREE *t)
 }
 
 static int
-tmp()
+tmp(void)
 {
 #ifdef SIG_BLOCK
 	sigset_t set, oset;
@@ -437,7 +437,7 @@ tmp()
 }
 
 static int
-byteorder()
+byteorder(void)
 {
 	u_int32_t x;
 	u_char *p;
diff --git a/src/plugins/kdb/db2/libdb2/hash/dbm.c b/src/plugins/kdb/db2/libdb2/hash/dbm.c
index 2dca256..e643634 100644
--- a/src/plugins/kdb/db2/libdb2/hash/dbm.c
+++ b/src/plugins/kdb/db2/libdb2/hash/dbm.c
@@ -143,7 +143,7 @@ kdb2_store(datum key, datum dat)
 }
 
 static void
-no_open_db()
+no_open_db(void)
 {
 	(void)fprintf(stderr, "dbm: no open database.\n");
 }
diff --git a/src/plugins/kdb/db2/libdb2/test/btree.tests/main.c b/src/plugins/kdb/db2/libdb2/test/btree.tests/main.c
index 088f903..eec843d 100644
--- a/src/plugins/kdb/db2/libdb2/test/btree.tests/main.c
+++ b/src/plugins/kdb/db2/libdb2/test/btree.tests/main.c
@@ -908,7 +908,7 @@ keydata(key, data)
 }
 
 void
-usage()
+usage(void)
 {
 	(void)fprintf(stderr,
 	    "usage: %s [-bdluw] [-c cache] [-i file] [-p page] [file]\n",
diff --git a/src/plugins/kdb/db2/libdb2/test/dbtest.c b/src/plugins/kdb/db2/libdb2/test/dbtest.c
index 04bf34b..a2866b4 100644
--- a/src/plugins/kdb/db2/libdb2/test/dbtest.c
+++ b/src/plugins/kdb/db2/libdb2/test/dbtest.c
@@ -792,7 +792,7 @@ xmalloc(char *text, size_t len)
 }
 
 void
-usage()
+usage(void)
 {
 	(void)fprintf(stderr,
 	    "usage: dbtest [-l] [-f file] [-i info] [-o file] type script\n");
diff --git a/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c b/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c
index 7c26899..4dcbeb3 100644
--- a/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c
+++ b/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c
@@ -3119,7 +3119,7 @@ cleanup:
 }
 
 int
-pkinit_openssl_init()
+pkinit_openssl_init(void)
 {
     /* Initialize OpenSSL. */
     ERR_load_crypto_strings();
diff --git a/src/plugins/tls/k5tls/openssl.c b/src/plugins/tls/k5tls/openssl.c
index 99fda7f..aab67c0 100644
--- a/src/plugins/tls/k5tls/openssl.c
+++ b/src/plugins/tls/k5tls/openssl.c
@@ -49,7 +49,7 @@ static int ex_handle_id = -1;
 MAKE_INIT_FUNCTION(init_openssl);
 
 int
-init_openssl()
+init_openssl(void)
 {
     SSL_library_init();
     SSL_load_error_strings();
diff --git a/src/tests/asn.1/make-vectors.c b/src/tests/asn.1/make-vectors.c
index 2fc8546..6f2b7dd 100644
--- a/src/tests/asn.1/make-vectors.c
+++ b/src/tests/asn.1/make-vectors.c
@@ -224,7 +224,7 @@ printbuf(void)
 }
 
 int
-main()
+main(void)
 {
     /* Initialize values which can't use static initializers. */
     asn_long2INTEGER(&otp_format, 2);  /* Alphanumeric */