ccan: update.

This gives us a slew of -Wextra fixes (not all of them though!) but
we're actually doing it for the monotonic version of timers.

This breaks some stuff, so we fix that up next.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

ccan/README

@@ -1,3 +1,3 @@
 CCAN imported from http://ccodearchive.net.
 
-CCAN version: init-2247-g5e37a0f
+CCAN version: init-2302-g6b74669

ccan/ccan/alignof/_info

@@ -21,7 +21,7 @@
  *
  *	// Output contains "ALIGNOF(char) == 1"
  *	// Will also print out whether an onstack char array can hold a long.
- *	int main(int argc, char *argv[])
+ *	int main(void)
  *	{
  *		char arr[sizeof(int)];
  *

ccan/ccan/alignof/test/run.c

@@ -24,7 +24,7 @@ struct lots_of_types
 	char c5;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct lots_of_types lots_of_types, *lp = malloc(sizeof(*lp));
 	char c;

ccan/ccan/array_size/test/compile_fail-function-param.c

@@ -18,7 +18,7 @@ int check_parameter(const struct foo *array)
 #endif
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	return check_parameter(NULL);
 }

ccan/ccan/array_size/test/compile_fail.c

@@ -2,6 +2,8 @@
 
 int main(int argc, char *argv[8])
 {
+	(void)argc;
+	(void)argv;
 	char array[100];
 #ifdef FAIL
 	return ARRAY_SIZE(argv) + ARRAY_SIZE(array);

ccan/ccan/array_size/test/run.c

@@ -16,7 +16,7 @@ static int array2_size = ARRAY_SIZE(array2);
 static int array3_size = ARRAY_SIZE(array3);
 static int array4_size = ARRAY_SIZE(array4);
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	plan_tests(8);
 	ok1(array1_size == 1);

ccan/ccan/asort/_info

@@ -31,7 +31,7 @@
  *	int main(int argc, char *argv[])
  *	{
  *		bool casefold = false;
- *		unsigned int i;
+ *		int i;
  *	
  *		if (argc < 2) {
  *			fprintf(stderr, "Usage: %s [-i] <list>...\n"

ccan/ccan/asort/test/compile_fail-context-type.c

@@ -1,7 +1,7 @@
 #include <ccan/asort/asort.h>
 #include <ccan/asort/asort.c>
 
-static int cmp(char *const *a, char *const *b, int *flag)
+static int cmp(char *const *a UNNEEDED, char *const *b UNNEEDED, int *flag UNNEEDED)
 {
 	return 0;
 }

ccan/ccan/build_assert/test/compile_fail-expr.c

@@ -1,6 +1,6 @@
 #include <ccan/build_assert/build_assert.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 #ifdef FAIL
 	return BUILD_ASSERT_OR_ZERO(1 == 0);

ccan/ccan/build_assert/test/compile_fail.c

@@ -1,6 +1,6 @@
 #include <ccan/build_assert/build_assert.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 #ifdef FAIL
 	BUILD_ASSERT(1 == 0);

ccan/ccan/build_assert/test/compile_ok.c

@@ -1,6 +1,6 @@
 #include <ccan/build_assert/build_assert.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	BUILD_ASSERT(1 == 1);
 	return 0;

ccan/ccan/build_assert/test/run-BUILD_ASSERT_OR_ZERO.c

@@ -1,7 +1,7 @@
 #include <ccan/build_assert/build_assert.h>
 #include <ccan/tap/tap.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	plan_tests(1);
 	ok1(BUILD_ASSERT_OR_ZERO(1 == 1) == 0);

ccan/ccan/cast/_info

@@ -24,6 +24,7 @@
  *	#include <ccan/cast/cast.h>
  *	#include <stdint.h>
  *	#include <stdio.h>
+ *	#include <stdlib.h>
  *
  *	// Find char @orig in @str, if @repl, replace them.  Return number.
  *	static size_t find_chars(char *str, char orig, char repl)
@@ -53,6 +54,9 @@
  *	{
  *		uint64_t hash;
  *
+ *		if (argc != 2) {
+ *			fprintf(stderr, "Needs argument\n"); exit(1);
+ *		}
  *		// find_chars wants a non-const string, but doesn't
  *		// need it if repl == 0.
  *		printf("%zu %c's in 'test string'\n",

ccan/ccan/cast/test/compile_fail-cast_const.c

@@ -6,7 +6,7 @@ struct char_struct {
 	char c;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *uc;
 	const

ccan/ccan/cast/test/compile_fail-cast_const2.c

@@ -6,7 +6,7 @@ struct char_struct {
 	char c;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char **uc;
 	const

ccan/ccan/cast/test/compile_fail-cast_const3.c

@@ -6,7 +6,7 @@ struct char_struct {
 	char c;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char ***uc;
 	const

ccan/ccan/cast/test/compile_fail-cast_signed-const.c

@@ -1,7 +1,7 @@
 #include <ccan/cast/cast.h>
 #include <stdlib.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned char *uc;
 #ifdef FAIL

ccan/ccan/cast/test/compile_fail-cast_signed-sizesame.c

@@ -6,7 +6,7 @@ struct char_struct {
 	char c;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned char *uc;
 #ifdef FAIL

ccan/ccan/cast/test/compile_fail-cast_signed.c

@@ -1,7 +1,7 @@
 #include <ccan/cast/cast.h>
 #include <stdlib.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned char *uc;
 #ifdef FAIL

ccan/ccan/cast/test/compile_fail-cast_static-2.c

@@ -1,7 +1,7 @@
 #include <ccan/cast/cast.h>
 #include <stdlib.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *c;
 #ifdef FAIL

ccan/ccan/cast/test/compile_fail-cast_static-3.c

@@ -1,7 +1,7 @@
 #include <ccan/cast/cast.h>
 #include <stdlib.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *c;
 #ifdef FAIL

ccan/ccan/cast/test/compile_fail-cast_static.c

@@ -1,7 +1,7 @@
 #include <ccan/cast/cast.h>
 #include <stdlib.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	long c;
 #ifdef FAIL

ccan/ccan/cast/test/compile_ok-static.c

@@ -6,5 +6,6 @@ static char *p = cast_const(char *, (const char *)"hello");
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 	return p[0] == argv[0][0];
 }

ccan/ccan/cdump/_info

@@ -29,7 +29,8 @@
  * {
  * 	char *code, *problems;
  * 	struct cdump_definitions *defs;
- * 	int i, j;
+ * 	int i;
+ *	size_t j;
  *
  * 	// Read code from stdin.
  * 	code = grab_file(NULL, NULL);

ccan/ccan/cdump/cdump.c

@@ -213,7 +213,7 @@ static struct cdump_type *get_type(struct cdump_definitions *defs,
 				   enum cdump_type_kind kind,
 				   const char *name)
 {
-	cdump_map_t *m;
+	cdump_map_t *m = (void *)0x1L; /* Shouldn't be used */
 	struct cdump_type *t;
 
 	switch (kind) {

ccan/ccan/check_type/test/compile_fail-check_type.c

@@ -2,6 +2,8 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
+	(void)argv;
 #ifdef FAIL
 	check_type(argc, char);
 #endif

ccan/ccan/check_type/test/compile_fail-check_type_unsigned.c

@@ -2,6 +2,8 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
+	(void)argv;
 #ifdef FAIL
 #if HAVE_TYPEOF
 	check_type(argc, unsigned int);

ccan/ccan/check_type/test/compile_fail-check_types_match.c

@@ -3,6 +3,7 @@
 int main(int argc, char *argv[])
 {
 	unsigned char x = argc;
+	(void)argv;
 #ifdef FAIL
 	check_types_match(argc, x);
 #endif

ccan/ccan/check_type/test/run.c

@@ -5,6 +5,7 @@ int main(int argc, char *argv[])
 {
 	int x = 0, y = 0;
 
+	(void)argv;
 	plan_tests(9);
 
 	ok1(check_type(argc, int) == 0);

ccan/ccan/compiler/_info

@@ -41,7 +41,7 @@
  *		va_end(ap);
  *	}
  *
- *	int main(int argc, char *argv[])
+ *	int main(int argc, char *argv[] UNNEEDED)
  *	{
  *		if (argc != 1) {
  *			logger(3, "Don't want %i arguments!\n", argc-1);

ccan/ccan/compiler/test/compile_fail-printf.c

@@ -2,9 +2,11 @@
 
 static void PRINTF_FMT(2,3) my_printf(int x, const char *fmt, ...)
 {
+	(void)x;
+	(void)fmt;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned int i = 0;
 

ccan/ccan/compiler/test/run-is_compile_constant.c

@@ -3,6 +3,8 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
+	(void)argv;
 	plan_tests(2);
 
 	ok1(!IS_COMPILE_CONSTANT(argc));

ccan/ccan/container_of/_info

@@ -26,17 +26,19 @@
  *		struct timer timer;
  *	};
  *
- *	static void register_timer(struct timer *timer)
- *	{
- *		//...
- *	}
- *
  *	static void my_timer_callback(struct timer *timer)
  *	{
  *		struct info *info = container_of(timer, struct info, timer);
  *		printf("my_stuff is %u\n", info->my_stuff);
  *	}
  *
+ *	static void register_timer(struct timer *timer)
+ *	{
+ *		(void)timer;
+ *		(void)my_timer_callback;
+ *		//...
+ *	}
+ *
  *	int main(void)
  *	{
  *		struct info info = { .my_stuff = 1 };

ccan/ccan/container_of/test/compile_fail-bad-type.c

@@ -6,7 +6,7 @@ struct foo {
 	char b;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct foo foo = { .a = 1, .b = 2 };
 	int *intp = &foo.a;

ccan/ccan/container_of/test/compile_fail-types.c

@@ -6,7 +6,7 @@ struct foo {
 	char b;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct foo foo = { .a = 1, .b = 2 }, *foop;
 	int *intp = &foo.a;

ccan/ccan/container_of/test/compile_fail-var-types.c

@@ -6,7 +6,7 @@ struct foo {
 	char b;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct foo foo = { .a = 1, .b = 2 }, *foop;
 	int *intp = &foo.a;

ccan/ccan/container_of/test/run.c

@@ -6,7 +6,7 @@ struct foo {
 	char b;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct foo foo = { .a = 1, .b = 2 };
 	int *intp = &foo.a;

ccan/ccan/crypto/siphash24/siphash24.c

@@ -45,6 +45,7 @@ static void check_siphash24(struct siphash24_ctx *ctx)
 static bool alignment_ok(const void *p, size_t n)
 {
 #if HAVE_UNALIGNED_ACCESS
+	(void)p; (void)n;
 	return true;
 #else
 	return ((size_t)p % n == 0);

ccan/ccan/endian/test/run.c

@@ -3,7 +3,7 @@
 #include <stddef.h>
 #include <ccan/tap/tap.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	union {
 		uint64_t u64;

ccan/ccan/err/test/run.c

@@ -15,6 +15,7 @@ int main(int argc, char *argv[])
 	int pfd[2];
 	const char *base;
 
+	(void)argc;
 	plan_tests(24);
 
 	err_set_progname(argv[0]);
@@ -27,7 +28,8 @@ int main(int argc, char *argv[])
 		base = argv[0];
 
 	/* Test err() in child */
-	pipe(pfd);
+	if (pipe(pfd))
+		abort();
 	fflush(stdout);
 	if (fork()) {
 		char buffer[BUFFER_MAX+1];
@@ -59,7 +61,8 @@ int main(int argc, char *argv[])
 	}
 
 	/* Test errx() in child */
-	pipe(pfd);
+	if (pipe(pfd))
+		abort();
 	fflush(stdout);
 	if (fork()) {
 		char buffer[BUFFER_MAX+1];
@@ -89,7 +92,8 @@ int main(int argc, char *argv[])
 
 
 	/* Test warn() in child */
-	pipe(pfd);
+	if (pipe(pfd))
+		abort();
 	fflush(stdout);
 	if (fork()) {
 		char buffer[BUFFER_MAX+1];
@@ -121,7 +125,8 @@ int main(int argc, char *argv[])
 	}
 
 	/* Test warnx() in child */
-	pipe(pfd);
+	if (pipe(pfd))
+		abort();
 	fflush(stdout);
 	if (fork()) {
 		char buffer[BUFFER_MAX+1];

ccan/ccan/htable/_info

@@ -36,6 +36,7 @@
  *	// Wrapper for rehash function pointer.
  *	static size_t rehash(const void *e, void *unused)
  *	{
+ *		(void)unused;
  *		return hash_string(((struct name_to_digit *)e)->name);
  *	}
  *
@@ -64,7 +65,7 @@
  *	int main(int argc, char *argv[])
  *	{
  *		struct htable ht;
- *		unsigned int i;
+ *		int i;
  *		unsigned long val;
  *
  *		if (argc < 2)
@@ -73,7 +74,7 @@
  *
  *		// Create and populate hash table.
  *		htable_init(&ht, rehash, NULL);
- *		for (i = 0; i < sizeof(map)/sizeof(map[0]); i++)
+ *		for (i = 0; i < (int)(sizeof(map)/sizeof(map[0])); i++)
  *			htable_add(&ht, hash_string(map[i].name), &map[i]);
  *
  *		// Add any aliases to the hash table.

ccan/ccan/htable/htable.h

@@ -35,6 +35,7 @@ struct htable {
  *	// For simplicity's sake, say hash value is contents of elem.
  *	static size_t rehash(const void *elem, void *unused)
  *	{
+ *		(void)unused;
  *		return *(size_t *)elem;
  *	}
  *	static struct htable ht = HTABLE_INITIALIZER(ht, rehash, NULL);

ccan/ccan/htable/test/run-copy.c

@@ -6,7 +6,7 @@
 
 #define NUM_VALS 512
 
-static size_t hash(const void *elem, void *unused)
+static size_t hash(const void *elem, void *unused UNNEEDED)
 {
 	size_t h = *(uint64_t *)elem / 2;
 	return h;
@@ -17,7 +17,7 @@ static bool cmp(const void *candidate, void *ptr)
 	return *(const uint64_t *)candidate == *(const uint64_t *)ptr;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct htable ht, ht2;
 	uint64_t val[NUM_VALS], i;

ccan/ccan/htable/test/run-size.c

@@ -8,13 +8,13 @@
 
 /* We use the number divided by two as the hash (for lots of
    collisions). */
-static size_t hash(const void *elem, void *unused)
+static size_t hash(const void *elem, void *unused UNNEEDED)
 {
 	size_t h = *(uint64_t *)elem / 2;
 	return h;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct htable ht;
 	uint64_t val[NUM_VALS];

ccan/ccan/htable/test/run-type-int.c

@@ -88,7 +88,7 @@ static void del_vals(struct htable_obj *ht,
 }
 
 static void del_vals_bykey(struct htable_obj *ht,
-			   const struct obj val[], unsigned int num)
+			   const struct obj val[] UNNEEDED, unsigned int num)
 {
 	unsigned int i;
 
@@ -112,7 +112,7 @@ static bool check_mask(struct htable *ht, const struct obj val[], unsigned num)
 	return true;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned int i;
 	struct htable_obj ht, ht2;

ccan/ccan/htable/test/run-type.c

@@ -83,7 +83,7 @@ static void del_vals(struct htable_obj *ht,
 }
 
 static void del_vals_bykey(struct htable_obj *ht,
-			   const struct obj val[], unsigned int num)
+			   const struct obj val[] UNNEEDED, unsigned int num)
 {
 	unsigned int i;
 
@@ -107,7 +107,7 @@ static bool check_mask(struct htable *ht, const struct obj val[], unsigned num)
 	return true;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned int i;
 	struct htable_obj ht, ht2;

ccan/ccan/htable/test/run-zero-hash-first-entry.c

@@ -8,7 +8,7 @@ struct data {
 };
 
 /* Hash is simply key itself. */
-static size_t hash(const void *e, void *unused)
+static size_t hash(const void *e, void *unused UNNEEDED)
 {
 	struct data *d = (struct data *)e;
 

ccan/ccan/htable/test/run.c

@@ -10,7 +10,7 @@
 /* We use the number divided by two as the hash (for lots of
    collisions), plus set all the higher bits so we can detect if they
    don't get masked out. */
-static size_t hash(const void *elem, void *unused)
+static size_t hash(const void *elem, void *unused UNNEEDED)
 {
 	size_t h = *(uint64_t *)elem / 2;
 	h |= -1UL << NUM_BITS;
@@ -95,7 +95,7 @@ static bool check_mask(struct htable *ht, uint64_t val[], unsigned num)
 	return true;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned int i, weight;
 	uintptr_t perfect_bit;

ccan/ccan/ilog/test/run-out-of-line.c

@@ -19,7 +19,7 @@ static int test_ilog64(uint64_t _v){
 
 #define NTRIALS (64)
 
-int main(int _argc,const char *_argv[]){
+int main(void){
   int i;
   int j;
   int (*il32)(uint32_t) = ilog32;

ccan/ccan/ilog/test/run.c

@@ -19,7 +19,7 @@ static int test_ilog64(uint64_t _v){
 
 #define NTRIALS (64)
 
-int main(int _argc,const char *_argv[]){
+int main(void){
   int i;
   int j;
   /*This is how many tests you plan to run.*/

ccan/ccan/io/io.h

@@ -47,7 +47,8 @@ struct io_conn;
  *	int fd[2];
  *	struct io_conn *conn;
  *
- *	pipe(fd);
+ *	if (pipe(fd) != 0)
+ *		exit(1);
  *	conn = io_new_conn(NULL, fd[0], conn_init, (const char *)"hi!");
  *	if (!conn)
  *		exit(1);
@@ -653,11 +654,11 @@ int io_conn_fd(const struct io_conn *conn);
  * io_time_override - override the normal call for time.
  * @nowfn: the function to call.
  *
- * io usually uses time_now() internally, but this forces it
+ * io usually uses time_mono() internally, but this forces it
  * to use your function (eg. for debugging).  Returns the old
  * one.
  */
-struct timeabs (*io_time_override(struct timeabs (*now)(void)))(void);
+struct timemono (*io_time_override(struct timemono (*now)(void)))(void);
 
 /**
  * io_set_debug - set synchronous mode on a connection.

ccan/ccan/io/poll.c

@@ -16,11 +16,11 @@ static struct pollfd *pollfds = NULL;
 static struct fd **fds = NULL;
 static LIST_HEAD(closing);
 static LIST_HEAD(always);
-static struct timeabs (*nowfn)(void) = time_now;
+static struct timemono (*nowfn)(void) = time_mono;
 
-struct timeabs (*io_time_override(struct timeabs (*now)(void)))(void)
+struct timemono (*io_time_override(struct timemono (*now)(void)))(void)
 {
-	struct timeabs (*old)(void) = nowfn;
+	struct timemono (*old)(void) = nowfn;
 	nowfn = now;
 	return old;
 }
@@ -262,7 +262,7 @@ void *io_loop(struct timers *timers, struct timer **expired)
 		assert(num_waiting);
 
 		if (timers) {
-			struct timeabs now, first;
+			struct timemono now, first;
 
 			now = nowfn();
 
@@ -274,7 +274,7 @@ void *io_loop(struct timers *timers, struct timer **expired)
 			/* Now figure out how long to wait for the next one. */
 			if (timer_earliest(timers, &first)) {
 				uint64_t next;
-				next = time_to_msec(time_between(first, now));
+				next = time_to_msec(timemono_between(first, now));
 				if (next < INT_MAX)
 					ms_timeout = next;
 				else

ccan/ccan/io/test/run-01-start-finish.c

@@ -69,7 +69,7 @@ static int make_listen_fd(const char *port, struct addrinfo **info)
 int main(void)
 {
 	int state = 0;
-	struct addrinfo *addrinfo;
+	struct addrinfo *addrinfo = NULL;
 	struct io_listener *l;
 	int fd;
 

ccan/ccan/io/test/run-02-read.c

@@ -71,7 +71,7 @@ static int make_listen_fd(const char *port, struct addrinfo **info)
 int main(void)
 {
 	struct data *d = malloc(sizeof(*d));
-	struct addrinfo *addrinfo;
+	struct addrinfo *addrinfo = NULL;
 	struct io_listener *l;
 	int fd, status;
 

ccan/ccan/io/test/run-15-timeout.c

@@ -47,8 +47,7 @@ static struct io_plan *init_conn(struct io_conn *conn, struct data *d)
 	d->conn = conn;
 	io_set_finish(conn, finish_ok, d);
 
-	timer_add(&d->timers, &d->timer,
+	timer_addrel(&d->timers, &d->timer, time_from_usec(d->timeout_usec));
-		  timeabs_add(time_now(), time_from_usec(d->timeout_usec)));
 
 	return io_read(conn, d->buf, sizeof(d->buf), no_timeout, d);
 }
@@ -97,7 +96,7 @@ int main(void)
 	plan_tests(21);
 	d->state = 0;
 	d->timeout_usec = 100000;
-	timers_init(&d->timers, time_now());
+	timers_init(&d->timers, time_mono());
 	timer_init(&d->timer);
 	fd = make_listen_fd(PORT, &addrinfo);
 	ok1(fd >= 0);
@@ -131,7 +130,7 @@ int main(void)
 
 	/* One element, d->timer. */
 	ok1(expired == &d->timer);
-	ok1(!timers_expire(&d->timers, time_now()));
+	ok1(!timers_expire(&d->timers, time_mono()));
 	ok1(d->state == 1);
 
 	io_close(d->conn);

ccan/ccan/io/test/run-20-io_time_override.c

@@ -45,9 +45,9 @@ static int make_listen_fd(const char *port, struct addrinfo **info)
 	return fd;
 }
 
-static struct timeabs fake_time;
+static struct timemono fake_time;
 
-static struct timeabs get_fake_time(void)
+static struct timemono get_fake_time(void)
 {
 	return fake_time;
 }
@@ -63,12 +63,12 @@ int main(void)
 	/* This is how many tests you plan to run */
 	plan_tests(7);
 
-	fake_time = time_now();
+	fake_time = time_mono();
 
 	timers_init(&timers, fake_time);
 	timer_init(&timer);
-	timer_add(&timers, &timer,
+	timer_addmono(&timers, &timer,
-		  timeabs_add(fake_time, time_from_sec(1000)));
+		      timemono_add(fake_time, time_from_sec(1000)));
 
 	fd = make_listen_fd(PORT, &addrinfo);
 	freeaddrinfo(addrinfo);
@@ -77,12 +77,12 @@ int main(void)
 	ok1(l);
 
 	fake_time.ts.tv_sec += 1000;
-	ok1(io_time_override(get_fake_time) == time_now);
+	ok1(io_time_override(get_fake_time) == time_mono);
 	ok1(io_loop(&timers, &expired) == NULL);
 
 	ok1(expired == &timer);
 	ok1(!timers_expire(&timers, fake_time));
-	ok1(io_time_override(time_now) == get_fake_time);
+	ok1(io_time_override(time_mono) == get_fake_time);
 	io_close_listener(l);
 
 	timers_cleanup(&timers);

ccan/ccan/isaac/test/run.c

@@ -134,7 +134,7 @@ static const uint32_t STATEVEC[ISAAC_SZ<<1]={
   0x46D95CA5, 0xC54CD95B, 0x9D855E89, 0x4BB5AF29
 };
 
-int main(int _argc,const char *_argv[]){
+int main(void){
   isaac_ctx   isaac;
   int         i;
   int         j;

ccan/ccan/isaac/test/run64.c

@@ -262,7 +262,7 @@ static const uint64_t STATEVEC64[ISAAC64_SZ<<1]={
   0x1877B51E57A764D5ULL, 0x001F837CC7350524ULL
 };
 
-int main(int _argc,const char *_argv[]){
+int main(void){
   isaac64_ctx isaac64;
   int         i;
   int         j;

ccan/ccan/likely/test/run-debug.c

@@ -26,7 +26,7 @@ static bool likely_one_unlikely_two(unsigned int val1, unsigned int val2)
 	return false;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *bad;
 

ccan/ccan/likely/test/run.c

@@ -17,7 +17,7 @@ static bool one_seems_unlikely(unsigned int val)
 	return false;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	plan_tests(4);
 

ccan/ccan/list/_info

@@ -31,7 +31,7 @@
  *	{
  *		struct parent p;
  *		struct child *c;
- *		unsigned int i;
+ *		int i;
  *
  *		if (argc < 2)
  *			errx(1, "Usage: %s parent children...", argv[0]);

ccan/ccan/list/list.h

@@ -291,6 +291,21 @@ static inline bool list_empty_nodebug(const struct list_head *h)
 }
 #endif
 
+/**
+ * list_empty_nocheck - is a list empty?
+ * @h: the list_head
+ *
+ * If the list is empty, returns true. This doesn't perform any
+ * debug check for list consistency, so it can be called without
+ * locks, racing with the list being modified. This is ok for
+ * checks where an incorrect result is not an issue (optimized
+ * bail out path for example).
+ */
+static inline bool list_empty_nocheck(const struct list_head *h)
+{
+	return h->n.next == &h->n;
+}
+
 /**
  * list_del - delete an entry from an (unknown) linked list.
  * @n: the list_node to delete from the list.
@@ -701,12 +716,12 @@ static inline void list_prepend_list_(struct list_head *to,
  * so you can break and continue as normal.
  *
  * WARNING! Being the low-level macro that it is, this wrapper doesn't know
- * nor care about the type of @i. The only assumtion made is that @i points
+ * nor care about the type of @i. The only assumption made is that @i points
  * to a chunk of memory that at some @offset, relative to @i, contains a
- * properly filled `struct node_list' which in turn contains pointers to
+ * properly filled `struct list_node' which in turn contains pointers to
- * memory chunks and it's turtles all the way down. Whith all that in mind
+ * memory chunks and it's turtles all the way down. With all that in mind
  * remember that given the wrong pointer/offset couple this macro will
- * happilly churn all you memory untill SEGFAULT stops it, in other words
+ * happily churn all you memory until SEGFAULT stops it, in other words
  * caveat emptor.
  *
  * It is worth mentioning that one of legitimate use-cases for that wrapper

ccan/ccan/list/test/run-CCAN_LIST_DEBUG.c

@@ -17,6 +17,7 @@ static int my_fprintf(FILE *stream, const char *format, ...)
 {
 	va_list ap;
 	int ret;
+	(void)stream;
 	va_start(ap, format);
 	ret = vsprintf(printf_buffer, format, ap);
 	va_end(ap);
@@ -28,7 +29,7 @@ static int my_fprintf(FILE *stream, const char *format, ...)
 #include <ccan/tap/tap.h>
 #include <ccan/list/list.c>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct list_head list;
 	struct list_node n1;
@@ -44,7 +45,7 @@ int main(int argc, char *argv[])
 	list.n.prev = &n1;
 
 	/* Aborting version. */
-	sprintf(expect, "run-CCAN_LIST_DEBUG.c:50: prev corrupt in node %p (0) of %p\n",
+	sprintf(expect, "run-CCAN_LIST_DEBUG.c:51: prev corrupt in node %p (0) of %p\n",
 		&list, &list);
 	if (setjmp(aborted) == 0) {
 		assert(list_empty(&list));

ccan/ccan/list/test/run-check-corrupt.c

@@ -16,6 +16,7 @@ static int my_fprintf(FILE *stream, const char *format, ...)
 {
 	va_list ap;
 	int ret;
+	(void)stream;
 	va_start(ap, format);
 	ret = vsprintf(printf_buffer, format, ap);
 	va_end(ap);
@@ -26,7 +27,7 @@ static int my_fprintf(FILE *stream, const char *format, ...)
 #include <ccan/tap/tap.h>
 #include <ccan/list/list.c>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct list_head list;
 	struct list_node n1;

ccan/ccan/list/test/run-check-nonconst.c

@@ -8,7 +8,7 @@ struct child {
 	struct list_node list;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct child c1, c2;
 	struct list_head list = LIST_HEAD_INIT(list);

ccan/ccan/list/test/run-list_del_from-assert.c

@@ -7,7 +7,7 @@
 #include <unistd.h>
 #include <signal.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct list_head list1, list2;
 	struct list_node n1, n2, n3;

ccan/ccan/list/test/run-list_prev-list_next.c

@@ -14,7 +14,7 @@ struct child {
 	struct list_node list;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct parent parent;
 	struct child c1, c2, c3;

ccan/ccan/list/test/run-prepend_list.c

@@ -17,7 +17,7 @@ static bool list_expect(struct list_head *h, ...)
 	return (n->next == &h->n);
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct list_head h1, h2;
 	struct list_node n[4];

ccan/ccan/list/test/run-single-eval.c

@@ -19,7 +19,7 @@ static LIST_HEAD(static_list);
 
 #define ref(obj, counter) ((counter)++, (obj))
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct parent parent;
 	struct child c1, c2, c3, *c, *n;

ccan/ccan/list/test/run.c

@@ -16,7 +16,7 @@ struct child {
 
 static LIST_HEAD(static_list);
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct parent parent;
 	struct child c1, c2, c3, x1, *c, *n;

ccan/ccan/mem/mem.h

@@ -250,6 +250,7 @@ static inline void *memcheck_(const void *data, size_t len)
 #else
 static inline void *memcheck_(const void *data, size_t len)
 {
+	(void)len;
 	return (void *)data;
 }
 #endif

ccan/ccan/noerr/_info

@@ -37,7 +37,7 @@
  *			return false;
  *		}
  *		// A short write means out of space.
- *		if (ret < strlen(string)) {
+ *		if (ret < (int)strlen(string)) {
  *			unlink(file);
  *			errno = ENOSPC;
  *			return false;

ccan/ccan/noerr/test/run.c

@@ -7,7 +7,7 @@
 #include <stdio.h>
 #include <assert.h>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	const char *name = "noerr.file";
 	int fd;

ccan/ccan/opt/opt.h

@@ -185,7 +185,7 @@ void opt_register_table(const struct opt_table *table, const char *desc);
  * string (or see opt_set_alloc) and return false.
  *
  * Example:
- * static char *explode(const char *optarg, void *unused)
+ * static char *explode(const char *optarg, void *unused UNNEEDED)
  * {
  *	errx(1, "BOOM! %s", optarg);
  * }

ccan/ccan/opt/test/compile_ok-const-arg.c

@@ -4,7 +4,7 @@
 #include <ccan/opt/parse.c>
 #include <ccan/opt/usage.c>
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	opt_register_noarg("-v", opt_version_and_exit,
 			   (const char *)"1.2.3",

ccan/ccan/opt/test/run-add_desc.c

@@ -4,19 +4,19 @@
 #include <ccan/opt/helpers.c>
 #include <ccan/opt/parse.c>
 
-static void show_10(char buf[OPT_SHOW_LEN], const void *arg)
+static void show_10(char buf[OPT_SHOW_LEN], const void *arg UNNEEDED)
 {
 	memset(buf, 'X', 10);
 	buf[10] = '\0';
 }
 
-static void show_max(char buf[OPT_SHOW_LEN], const void *arg)
+static void show_max(char buf[OPT_SHOW_LEN], const void *arg UNNEEDED)
 {
 	memset(buf, 'X', OPT_SHOW_LEN);
 }
 
 /* Test add_desc helper. */
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct opt_table opt;
 	char *ret;

ccan/ccan/opt/test/run-checkopt.c

@@ -53,7 +53,7 @@ static void reset(void)
 	opt_count = opt_num_short = opt_num_short_arg = opt_num_long = 0;
 }
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	int exitval;
 

ccan/ccan/opt/test/run-consume_words.c

@@ -5,7 +5,7 @@
 #include <ccan/opt/parse.c>
 
 /* Test consume_words helper. */
-int main(int argc, char *argv[])
+int main(void)
 {
 	size_t prefix, len;
 	bool start = true;

ccan/ccan/opt/test/run-helpers.c

@@ -52,7 +52,7 @@ static int saved_printf(const char *fmt, ...)
 	return ret;
 }
 
-static int saved_fprintf(FILE *ignored, const char *fmt, ...)
+static int saved_fprintf(FILE *ignored UNNEEDED, const char *fmt, ...)
 {
 	va_list ap;
 	int ret;

ccan/ccan/opt/test/run-iter.c

@@ -10,7 +10,7 @@
 #include <ccan/opt/parse.c>
 
 /* Test iterators. */
-int main(int argc, char *argv[])
+int main(void)
 {
 	unsigned j, i, len = 0;
 	const char *p;

ccan/ccan/opt/test/run-set_alloc.c

@@ -2,15 +2,15 @@
 #include <stdlib.h>
 
 /* Make sure we override these! */
-static void *no_malloc(size_t size)
+static void *no_malloc(size_t size UNNEEDED)
 {
 	abort();
 }
-static void *no_realloc(void *p, size_t size)
+static void *no_realloc(void *p UNNEEDED, size_t size UNNEEDED)
 {
 	abort();
 }
-static void no_free(void *p)
+static void no_free(void *p UNNEEDED)
 {
 	abort();
 }

ccan/ccan/opt/test/run-usage.c

@@ -6,7 +6,7 @@
 #include "utils.h"
 
 /* Ensure width is sane. */
-static const char *getenv_override(const char *name)
+static const char *getenv_override(const char *name UNNEEDED)
 {
 	return "100";
 }
@@ -18,13 +18,13 @@ static const char *getenv_override(const char *name)
 #include <ccan/opt/helpers.c>
 #include <ccan/opt/parse.c>
 
-static char *my_cb(void *p)
+static char *my_cb(void *p UNNEEDED)
 {
 	return NULL;
 }
 
 /* Test helpers. */
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *output;
 	char *longname = strdup("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");

ccan/ccan/opt/test/utils.c

@@ -8,7 +8,7 @@
 #include "utils.h"
 
 unsigned int test_cb_called;
-char *test_noarg(void *arg)
+char *test_noarg(void *arg UNNEEDED)
 {
 	test_cb_called++;
 	return NULL;

ccan/ccan/order/order.c

@@ -24,7 +24,7 @@
 			   const _type *b,				\
 			   void *ctx)					\
 	{								\
-		return _order_##_oname(a, b, int2ptr(0));		\
+		(void)ctx; return _order_##_oname(a, b, int2ptr(0));	\
 	}								\
 	int _order_##_oname##_reverse(const void *a,			\
 				      const void *b,			\
@@ -36,6 +36,7 @@
 				     const _type *b,			\
 				     void *ctx)				\
 	{								\
+		(void)ctx;						\
 		return _order_##_oname##_reverse(a, b, int2ptr(0));	\
 	}								\
 	int order_##_oname##_noctx(const void *a,			\

ccan/ccan/order/test/compile_fail_1.c

@@ -12,7 +12,7 @@ typedef int item_t;
 typedef struct item item_t;
 #endif
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	total_order_cb(cb0, struct item, struct cmp_info *) = fancy_cmp;
 	_total_order_cb cb1 = total_order_cast(fancy_cmp,

ccan/ccan/order/test/compile_fail_2.c

@@ -12,7 +12,7 @@ typedef int ctx_t;
 typedef struct cmp_info ctx_t;
 #endif
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	total_order_cb(cb0, struct item, struct cmp_info *) = fancy_cmp;
 	_total_order_cb cb1 = total_order_cast(fancy_cmp, struct item,

ccan/ccan/order/test/compile_ok.c

@@ -6,7 +6,7 @@
 
 #include "fancy_cmp.h"
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	total_order_cb(cb0, struct item, struct cmp_info *) = fancy_cmp;
 	_total_order_cb cb1 = total_order_cast(fancy_cmp,

ccan/ccan/order/test/run-fancy.c

@@ -8,7 +8,7 @@
 
 #include "fancy_cmp.h"
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct item item1 = {
 		.value = 0,

ccan/ccan/pipecmd/_info

@@ -28,7 +28,8 @@
  *	char input[12];
  *
  *	if (argc == 2) {
- *		write(STDOUT_FILENO, "hello world\n", 12);
+ *		if (write(STDOUT_FILENO, "hello world\n", 12) != 12)
+ *			exit(1);
  *		exit(0);
  *	}
  *	child = pipecmd(&outputfd, NULL, NULL, argv[0], "ignoredarg", NULL);

ccan/ccan/pipecmd/pipecmd.c

@@ -16,9 +16,12 @@ static char **gather_args(const char *arg0, va_list ap)
 	arr[0] = (char *)arg0;
 
 	while ((arr[n++] = va_arg(ap, char *)) != NULL) {
-		arr = realloc(arr, sizeof(char *) * (n + 1));
+		char **narr = realloc(arr, sizeof(char *) * (n + 1));
-		if (!arr)
+		if (!narr) {
+			free(arr);
 			return NULL;
+		}
+		arr = narr;
 	}
 	return arr;
 }
@@ -119,7 +122,10 @@ pid_t pipecmdarr(int *fd_fromchild, int *fd_tochild, int *fd_errfromchild,
 
 	child_errno_fail:
 		err = errno;
-		write(execfail[1], &err, sizeof(err));
+		/* Gcc's warn-unused-result fail. */
+		if (write(execfail[1], &err, sizeof(err))) {
+			;
+		}
 		exit(127);
 	}
 

ccan/ccan/ptrint/_info

@@ -29,7 +29,7 @@
  *
  *	void (*cb)(void *opaque) = callback;
  *
- *	int main(int argc, char *argv[])
+ *	int main(void)
  *	{
  *		int val = 17;
  *

ccan/ccan/read_write_all/_info

@@ -17,7 +17,7 @@
  *	#include <ccan/read_write_all/read_write_all.h>
  *
  *	#define BUFFER_SIZE 10
- *	int main(int argc, char *argv[])
+ *	int main(void)
  *	{
  *		char buffer[BUFFER_SIZE+1];
  *

ccan/ccan/read_write_all/test/run-read_all.c

@@ -17,6 +17,7 @@ static int p2c[2], c2p[2];
 static void got_signal(int sig)
 {
 	char c = 0;
+	(void)sig;
 	if (write(p2c[1], &c, 1) == 1)
 		sigcount++;
 }
@@ -24,7 +25,7 @@ static void got_signal(int sig)
 /* < PIPE_BUF *will* be atomic.  But > PIPE_BUF only *might* be non-atomic. */
 #define BUFSZ (1024*1024)
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *buffer;
 	char c = 0;

ccan/ccan/read_write_all/test/run-write_all.c

@@ -19,6 +19,9 @@ static ssize_t write_return;
 
 static ssize_t test_write(int fd, const void *buf, size_t count)
 {
+	(void)fd;
+	(void)buf;
+
 	if (write_return == 0) {
 		errno = ENOSPC;
 		return 0;
@@ -39,7 +42,7 @@ static ssize_t test_write(int fd, const void *buf, size_t count)
 
 #define BUFSZ 1024
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	char *buffer;
 

ccan/ccan/str/_info

@@ -26,11 +26,11 @@
  *
  *	int main(int argc, char *argv[])
  *	{
- *		if (argv[1] && streq(argv[1], "--verbose"))
+ *		if (argc > 1 && streq(argv[1], "--verbose"))
  *			printf("verbose set\n");
- *		if (argv[1] && strstarts(argv[1], "--"))
+ *		if (argc > 1 && strstarts(argv[1], "--"))
  *			printf("Some option set\n");
- *		if (argv[1] && strends(argv[1], "cow-powers"))
+ *		if (argc > 1 && strends(argv[1], "cow-powers"))
  *			printf("Magic option set\n");
  *		return 0;
  *	}

ccan/ccan/str/test/compile_fail-STR_MAX_CHARS.c

@@ -4,7 +4,7 @@ struct s {
 	int val;
 };
 
-int main(int argc, char *argv[])
+int main(void)
 {
 	struct s
 #ifdef FAIL

ccan/ccan/str/test/compile_fail-isalnum.c

@@ -3,6 +3,7 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
 #if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF
 #error We need typeof to check isalnum.

ccan/ccan/str/test/compile_fail-isalpha.c

@@ -3,6 +3,7 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
 #if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF
 #error We need typeof to check isalpha.

ccan/ccan/str/test/compile_fail-isascii.c

@@ -3,6 +3,7 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
 #if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF
 #error We need typeof to check isascii.

ccan/ccan/str/test/compile_fail-isblank.c

@@ -3,6 +3,7 @@
 
 int main(int argc, char *argv[])
 {
+	(void)argc;
 #ifdef FAIL
 #if !HAVE_BUILTIN_TYPES_COMPATIBLE_P || !HAVE_TYPEOF || !HAVE_ISBLANK
 #error We need typeof to check isblank.