Address compiler warnings in C code used by the DTrace test suite.

Reported by:	Jenkins
MFC after:	1 week

cddl/contrib/opensolaris/cmd/dtrace/test/tst/amd64/arrays/tst.rax.c

@@ -24,6 +24,8 @@
  * Use is subject to license terms.
  */
 
+void frax(void);
+
 __attribute__((optnone)) void
 frax(void)
 {

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/io/tst.fds.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/ioctl.h>
 
 #include <assert.h>
@@ -48,7 +46,8 @@ int
 main(int argc, char *argv[])
 {
 	const char *file = "/dev/null";
-	int i, n, fds[10];
+	size_t i, n;
+	int fds[10];
 	struct sigaction act;
 
 	if (argc > 1) {

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/java_api/tst.FunctionLookup.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <stdio.h>
 
 typedef void f(int x);

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/java_api/tst.ProbeData.c

@@ -24,43 +24,43 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
+#include <sys/cdefs.h>
 
 typedef void f(char *);
 
 static void
-f_a(char *a)
+f_a(char *a __unused)
 {
 }
 
 static void
-f_b(char *a)
+f_b(char *a __unused)
 {
 }
 
 static void
-f_c(char *a)
+f_c(char *a __unused)
 {
 }
 
 static void
-f_d(char *a)
+f_d(char *a __unused)
 {
 }
 
 static void
-f_e(char *a)
+f_e(char *a __unused)
 {
 }
 
 static void
-fN(f func, char *a, int i)
+fN(f func, char *a, int i __unused)
 {
 	func(a);
 }
 
 static void
-fN2(f func, char *a, int i)
+fN2(f func, char *a, int i __unused)
 {
 	func(a);
 }

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/json/tst.usdt.c

@@ -28,6 +28,8 @@
 		"  \"action\": \"%s\"" \
 		"}\n"
 
+int waiting(volatile int *);
+
 int
 waiting(volatile int *a)
 {
@@ -35,7 +37,7 @@ waiting(volatile int *a)
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	volatile int a = 0;
 	int idx;
@@ -45,7 +47,8 @@ main(int argc, char **argv)
 		continue;
 
 	for (idx = 0; idx < 10; idx++) {
-		char *odd, *even, *json, *action;
+		const char *odd, *even, *action;
+		char *json;
 
 		size *= 1.78;
 		odd = idx % 2 == 1 ? "true" : "false";
@@ -57,7 +60,7 @@ main(int argc, char **argv)
 		free(json);
 	}
 
-	BUNYAN_FAKE_LOG_DEBUG("{\"finished\": true}");
+	BUNYAN_FAKE_LOG_DEBUG(__DECONST(char *, "{\"finished\": true}"));
 
 	return (0);
 }

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/json/usdt.d

@@ -18,10 +18,10 @@
  */
 
 provider bunyan_fake {
-	probe log__trace(char *msg);
-	probe log__debug(char *msg);
-	probe log__info(char *msg);
-	probe log__warn(char *msg);
-	probe log__error(char *msg);
-	probe log__fatal(char *msg);
+	probe log__trace(const char *msg);
+	probe log__debug(const char *msg);
+	probe log__info(const char *msg);
+	probe log__warn(const char *msg);
+	probe log__error(const char *msg);
+	probe log__fatal(const char *msg);
 };

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.args1.c

@@ -24,28 +24,30 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
 
+int go(long, long, long, long, long, long, long, long, long, long);
+
 int
-go(long arg0, long arg1, long arg2, long arg3, long arg4, long arg5, long arg6,
-   long arg7, long arg8, long arg9)
+go(long arg0 __unused, long arg1 __unused, long arg2 __unused,
+   long arg3 __unused, long arg4 __unused, long arg5 __unused,
+   long arg6 __unused, long arg7 __unused, long arg8 __unused,
+   long arg9 __unused)
 {
 	return (arg1);
 }
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	go(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	(void) signal(SIGUSR1, handle);
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.float.c

@@ -24,14 +24,14 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
+extern volatile double c;
+
 volatile double c = 1.2;
 
 int
-main(int argc, char **argv)
+main(int argc, char **argv __unused)
 {
 	double a = 1.56;
 	double b = (double)argc;

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.fork.c

@@ -24,10 +24,11 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
+int waiting(volatile int *);
+int go(void);
+
 int
 waiting(volatile int *a)
 {
@@ -49,7 +50,7 @@ go(void)
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	volatile int a = 0;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.gcc.c

@@ -24,14 +24,15 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <spawn.h>
 #include <signal.h>
 #include <stdio.h>
 
+void go(void);
+void intr(int);
+
 void
 go(void)
 {
@@ -43,12 +44,12 @@ go(void)
 }
 
 void
-intr(int sig)
+intr(int sig __unused)
 {
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	struct sigaction sa;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.ret1.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -35,6 +33,11 @@
  * leading underscores.
  */
 
+extern int a;
+
+int help(void);
+int go(void);
+
 int a = 100;
 
 int
@@ -50,14 +53,14 @@ go(void)
 }
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	go();
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	(void) signal(SIGUSR1, handle);
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.ret2.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -35,6 +33,10 @@
  * leading underscores.
  */
 
+extern int a;
+
+int go(void);
+
 int a = 100;
 
 int
@@ -44,14 +46,14 @@ go(void)
 }
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	go();
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	(void) signal(SIGUSR1, handle);
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.vfork.c

@@ -24,10 +24,11 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
+int waiting(volatile int *);
+int go(void);
+
 int
 waiting(volatile int *a)
 {
@@ -49,7 +50,7 @@ go(void)
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	volatile int a = 0;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.weak1.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -37,6 +35,8 @@
 
 #pragma weak _go = go
 
+int go(int);
+
 int
 go(int a)
 {
@@ -44,14 +44,14 @@ go(int a)
 }
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	_go(1);
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	(void) signal(SIGUSR1, handle);
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/pid/tst.weak2.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -35,7 +33,7 @@
  * leading underscores.
  */
 
-static int
+static int __unused
 go(int a)
 {
 	return (a + 1);
@@ -44,14 +42,14 @@ go(int a)
 #pragma weak _go = go
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	_go(1);
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	(void) signal(SIGUSR1, handle);
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.exitcore.c

@@ -26,7 +26,7 @@
 #include <unistd.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 
 	for (;;)

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/proc/tst.sigwait.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <signal.h>
 #include <time.h>
 #include <stdlib.h>
@@ -36,7 +34,7 @@
 #define NANOSEC	1000000000
 
 int
-main(int argc, char **argv)
+main(int argc __unused, char **argv)
 {
 	struct sigevent ev;
 	struct itimerspec ts;

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/profile-n/tst.ufuncsort.c

@@ -24,32 +24,32 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
+#include <sys/cdefs.h>
 
 typedef void f(int x);
 
 static void
-f_a(int i)
+f_a(int i __unused)
 {
 }
 
 static void
-f_b(int i)
+f_b(int i __unused)
 {
 }
 
 static void
-f_c(int i)
+f_c(int i __unused)
 {
 }
 
 static void
-f_d(int i)
+f_d(int i __unused)
 {
 }
 
 static void
-f_e(int i)
+f_e(int i __unused)
 {
 }
 
@@ -60,7 +60,7 @@ fN(f func, int i)
 }
 
 int
-main()
+main(void)
 {
 	fN(f_a, 1);
 	fN(f_b, 2);

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/raise/tst.raise1.c

@@ -24,13 +24,11 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 #include <signal.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	sigset_t ss;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/raise/tst.raise2.c

@@ -24,20 +24,18 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 #include <signal.h>
 #include <stdlib.h>
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	struct sigaction sa;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/raise/tst.raise3.c

@@ -24,20 +24,18 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 #include <signal.h>
 #include <stdlib.h>
 
 static void
-handle(int sig)
+handle(int sig __unused)
 {
 	exit(0);
 }
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	struct sigaction sa;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/sdt/tst.sdtargs.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/types.h>
 #include <sys/sysctl.h>
 
@@ -33,7 +31,7 @@
 #include <unistd.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	int val = 1;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/stop/tst.stop1.c

@@ -24,12 +24,10 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	for (;;) {
 		getpid();

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/stop/tst.stop2.c

@@ -24,12 +24,10 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	for (;;) {
 		getpid();

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/syscall/tst.args.c

@@ -24,15 +24,13 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <stdio.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 
 /*ARGSUSED*/
 int
-main(int argc, char **argv)
+main(void)
 {
 	for (;;) {
 		(void) __syscall(SYS_mmap, NULL, (size_t)1, 2, 3, -1,

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/uctf/tst.aouttype.c

@@ -24,6 +24,8 @@ typedef struct season_7_lisa_the_vegetarian {
 	int fr_salad;
 } season_7_lisa_the_vegetarian_t;
 
+int sleeper(season_7_lisa_the_vegetarian_t *);
+
 int
 sleeper(season_7_lisa_the_vegetarian_t *lp)
 {

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/uctf/tst.chasestrings.c

@@ -22,9 +22,9 @@
 #include <unistd.h>
 
 typedef struct zelda_info {
-	char	*zi_gamename;
+	const char *zi_gamename;
 	int	zi_ndungeons;
-	char	*zi_villain;
+	const char *zi_villain;
 	int	zi_haszelda;
 } zelda_info_t;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/uctf/tst.printtype.c

@@ -27,19 +27,19 @@ typedef struct final_fantasy_info {
 } final_fantasy_info_t;
 
 static int
-ff_getgameid(final_fantasy_info_t *f)
+ff_getgameid(final_fantasy_info_t *f __unused)
 {
 	return (0);
 }
 
 static int
-ff_getpartysize(final_fantasy_info_t *f)
+ff_getpartysize(final_fantasy_info_t *f __unused)
 {
 	return (0);
 }
 
 static int
-ff_getsummons(final_fantasy_info_t *f)
+ff_getsummons(final_fantasy_info_t *f __unused)
 {
 	return (0);
 }

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.argmap.c

@@ -24,12 +24,10 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/sdt.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	for (;;) {
 		DTRACE_PROBE2(test_prov, place, 10, 4);

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.args.c

@@ -24,12 +24,10 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/sdt.h>
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	for (;;) {
 		DTRACE_PROBE2(test_prov, place, 10, 4);

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.forker.c

@@ -24,8 +24,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <sys/types.h>
 #include <sys/wait.h>
 
@@ -35,7 +33,7 @@
 #include "forker.h"
 
 int
-main(int argc, char **argv)
+main(void)
 {
 	int i;
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ustack/tst.bigstack.c

@@ -24,12 +24,11 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 
+void grow(int);
 void grow1(int);
 
 void
@@ -53,7 +52,7 @@ grow1(int frame)
 }
 
 int
-main(int argc, char *argv[])
+main(void)
 {
 	grow(1);
 

cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/ustack/tst.spin.c

@@ -24,12 +24,16 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include <unistd.h>
 
+extern volatile long long count;
+
 volatile long long count = 0;
 
+int baz(int);
+int bar(int);
+int foo(int, int);
+
 int
 baz(int a)
 {
@@ -57,5 +61,5 @@ foo(int a, int b)
 int
 main(int argc, char **argv)
 {
-	return (foo(argc, (int)argv) == 0);
+	return (foo(argc, (int)(uintptr_t)argv) == 0);
 }