t/helper: mark unused argv/argc arguments

Many test helper programs do not bother to look at argc or argv, because
they don't take any options. In a user-facing program, it's a good idea
to check for unexpected arguments and complain. But for a test helper,
it's not worth the trouble to enforce this.

But we do want to tell the compiler we're OK with ignoring them, to
silence -Wunused-parameter (and obviously we can't get rid of them,
since we have to conform to the usual cmd__foo() interface).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/helper/test-ctype.c

@@ -47,7 +47,7 @@ static int is_in(const char *s, int ch)
 	"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" \
 	"\x7f"
 
-int cmd__ctype(int argc, const char **argv)
+int cmd__ctype(int argc UNUSED, const char **argv UNUSED)
 {
 	TEST_CLASS(isdigit, DIGIT);
 	TEST_CLASS(isspace, " \n\r\t");

t/helper/test-date.c

@@ -104,7 +104,7 @@ static void getnanos(const char **argv)
 	printf("%lf\n", seconds);
 }
 
-int cmd__date(int argc, const char **argv)
+int cmd__date(int argc UNUSED, const char **argv)
 {
 	const char *x;
 

t/helper/test-drop-caches.c

@@ -155,7 +155,7 @@ static int cmd_dropcaches(void)
 
 #endif
 
-int cmd__drop_caches(int argc, const char **argv)
+int cmd__drop_caches(int argc UNUSED, const char **argv UNUSED)
 {
 	cmd_sync();
 	return cmd_dropcaches();

t/helper/test-dump-cache-tree.c

@@ -57,7 +57,7 @@ static int dump_cache_tree(struct cache_tree *it,
 	return errs;
 }
 
-int cmd__dump_cache_tree(int ac, const char **av)
+int cmd__dump_cache_tree(int ac UNUSED, const char **av UNUSED)
 {
 	struct index_state istate;
 	struct cache_tree *another = cache_tree();

t/helper/test-dump-fsmonitor.c

@@ -1,7 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 
-int cmd__dump_fsmonitor(int ac, const char **av)
+int cmd__dump_fsmonitor(int ac UNUSED, const char **av UNUSED)
 {
 	struct index_state *istate = the_repository->index;
 	int i;

t/helper/test-dump-split-index.c

@@ -10,7 +10,7 @@ static void show_bit(size_t pos, void *data)
 	printf(" %d", (int)pos);
 }
 
-int cmd__dump_split_index(int ac, const char **av)
+int cmd__dump_split_index(int ac UNUSED, const char **av)
 {
 	struct split_index *si;
 	int i;

t/helper/test-dump-untracked-cache.c

@@ -41,7 +41,7 @@ static void dump(struct untracked_cache_dir *ucd, struct strbuf *base)
 	strbuf_setlen(base, len);
 }
 
-int cmd__dump_untracked_cache(int ac, const char **av)
+int cmd__dump_untracked_cache(int ac UNUSED, const char **av UNUSED)
 {
 	struct untracked_cache *uc;
 	struct strbuf base = STRBUF_INIT;

t/helper/test-example-decorate.c

@@ -3,7 +3,7 @@
 #include "object.h"
 #include "decorate.h"
 
-int cmd__example_decorate(int argc, const char **argv)
+int cmd__example_decorate(int argc UNUSED, const char **argv UNUSED)
 {
 	struct decoration n;
 	struct object_id one_oid = { {1} };

t/helper/test-fsmonitor-client.c

@@ -11,7 +11,7 @@
 #include "trace2.h"
 
 #ifndef HAVE_FSMONITOR_DAEMON_BACKEND
-int cmd__fsmonitor_client(int argc, const char **argv)
+int cmd__fsmonitor_client(int argc UNUSED, const char **argv UNUSED)
 {
 	die("fsmonitor--daemon not available on this platform");
 }

t/helper/test-hexdump.c

@@ -4,7 +4,7 @@
 /*
  * Read stdin and print a hexdump to stdout.
  */
-int cmd__hexdump(int argc, const char **argv)
+int cmd__hexdump(int argc UNUSED, const char **argv UNUSED)
 {
 	char buf[1024];
 	ssize_t i, len;

t/helper/test-index-version.c

@@ -1,7 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 
-int cmd__index_version(int argc, const char **argv)
+int cmd__index_version(int argc UNUSED, const char **argv UNUSED)
 {
 	struct cache_header hdr;
 	int version;

t/helper/test-match-trees.c

@@ -3,7 +3,7 @@
 #include "hex.h"
 #include "tree.h"
 
-int cmd__match_trees(int ac, const char **av)
+int cmd__match_trees(int ac UNUSED, const char **av)
 {
 	struct object_id hash1, hash2, shifted;
 	struct tree *one, *two;

t/helper/test-oid-array.c

@@ -9,7 +9,7 @@ static int print_oid(const struct object_id *oid, void *data)
 	return 0;
 }
 
-int cmd__oid_array(int argc, const char **argv)
+int cmd__oid_array(int argc UNUSED, const char **argv UNUSED)
 {
 	struct oid_array array = OID_ARRAY_INIT;
 	struct strbuf line = STRBUF_INIT;

t/helper/test-oidmap.c

@@ -22,7 +22,7 @@ struct test_entry {
  * iterate -> oidkey1 namevalue1\noidkey2 namevalue2\n...
  *
  */
-int cmd__oidmap(int argc, const char **argv)
+int cmd__oidmap(int argc UNUSED, const char **argv UNUSED)
 {
 	struct strbuf line = STRBUF_INIT;
 	struct oidmap map = OIDMAP_INIT;

t/helper/test-oidtree.c

@@ -3,13 +3,13 @@
 #include "hex.h"
 #include "oidtree.h"
 
-static enum cb_next print_oid(const struct object_id *oid, void *data)
+static enum cb_next print_oid(const struct object_id *oid, void *data UNUSED)
 {
 	puts(oid_to_hex(oid));
 	return CB_CONTINUE;
 }
 
-int cmd__oidtree(int argc, const char **argv)
+int cmd__oidtree(int argc UNUSED, const char **argv UNUSED)
 {
 	struct oidtree ot;
 	struct strbuf line = STRBUF_INIT;

t/helper/test-online-cpus.c

@@ -2,7 +2,7 @@
 #include "git-compat-util.h"
 #include "thread-utils.h"
 
-int cmd__online_cpus(int argc, const char **argv)
+int cmd__online_cpus(int argc UNUSED, const char **argv UNUSED)
 {
 	printf("%d\n", online_cpus());
 	return 0;

t/helper/test-parse-options.c

@@ -263,14 +263,14 @@ int cmd__parse_options_flags(int argc, const char **argv)
 	return parse_options_flags__cmd(argc, argv, test_flags);
 }
 
-static int subcmd_one(int argc, const char **argv, const char *prefix)
+static int subcmd_one(int argc, const char **argv, const char *prefix UNUSED)
 {
 	printf("fn: subcmd_one\n");
 	print_args(argc, argv);
 	return 0;
 }
 
-static int subcmd_two(int argc, const char **argv, const char *prefix)
+static int subcmd_two(int argc, const char **argv, const char *prefix UNUSED)
 {
 	printf("fn: subcmd_two\n");
 	print_args(argc, argv);

t/helper/test-prio-queue.c

@@ -16,7 +16,7 @@ static void show(int *v)
 	free(v);
 }
 
-int cmd__prio_queue(int argc, const char **argv)
+int cmd__prio_queue(int argc UNUSED, const char **argv)
 {
 	struct prio_queue pq = { intcmp };
 

t/helper/test-read-graph.c

@@ -5,7 +5,7 @@
 #include "object-store.h"
 #include "bloom.h"
 
-int cmd__read_graph(int argc, const char **argv)
+int cmd__read_graph(int argc UNUSED, const char **argv UNUSED)
 {
 	struct commit_graph *graph = NULL;
 	struct object_directory *odb;

t/helper/test-ref-store.c

@@ -201,7 +201,8 @@ static int cmd_verify_ref(struct ref_store *refs, const char **argv)
 	return ret;
 }
 
-static int cmd_for_each_reflog(struct ref_store *refs, const char **argv)
+static int cmd_for_each_reflog(struct ref_store *refs,
+			       const char **argv UNUSED)
 {
 	return refs_for_each_reflog(refs, each_ref, NULL);
 }
@@ -323,7 +324,7 @@ static struct command commands[] = {
 	{ NULL, NULL }
 };
 
-int cmd__ref_store(int argc, const char **argv)
+int cmd__ref_store(int argc UNUSED, const char **argv)
 {
 	struct ref_store *refs;
 	const char *func;

t/helper/test-scrap-cache-tree.c

@@ -5,7 +5,7 @@
 #include "tree.h"
 #include "cache-tree.h"
 
-int cmd__scrap_cache_tree(int ac, const char **av)
+int cmd__scrap_cache_tree(int ac UNUSED, const char **av UNUSED)
 {
 	struct lock_file index_lock = LOCK_INIT;
 

t/helper/test-sigchain.c

@@ -13,7 +13,7 @@ X(two)
 X(three)
 #undef X
 
-int cmd__sigchain(int argc, const char **argv)
+int cmd__sigchain(int argc UNUSED, const char **argv UNUSED)
 {
 	sigchain_push(SIGTERM, one);
 	sigchain_push(SIGTERM, two);

t/helper/test-strcmp-offset.c

@@ -1,7 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 
-int cmd__strcmp_offset(int argc, const char **argv)
+int cmd__strcmp_offset(int argc UNUSED, const char **argv)
 {
 	int result;
 	size_t offset;

t/helper/test-submodule-config.c

@@ -4,7 +4,7 @@
 #include "submodule-config.h"
 #include "submodule.h"
 
-static void die_usage(int argc, const char **argv, const char *msg)
+static void die_usage(int argc UNUSED, const char **argv, const char *msg)
 {
 	fprintf(stderr, "%s\n", msg);
 	fprintf(stderr, "Usage: %s [<commit> <submodulepath>] ...\n", argv[0]);

t/helper/test-submodule.c

@@ -174,7 +174,7 @@ static int cmd__submodule_config_unset(int argc, const char **argv)
 	usage_with_options(usage, options);
 }
 
-static int cmd__submodule_config_writeable(int argc, const char **argv)
+static int cmd__submodule_config_writeable(int argc, const char **argv UNUSED)
 {
 	struct option options[] = {
 		OPT_END()

t/helper/test-trace2.c

@@ -208,7 +208,7 @@ static int ut_007BUG(int argc, const char **argv)
 	BUG("the bug message");
 }
 
-static int ut_008bug(int argc, const char **argv)
+static int ut_008bug(int argc UNUSED, const char **argv UNUSED)
 {
 	bug("a bug message");
 	bug("another bug message");
@@ -216,7 +216,7 @@ static int ut_008bug(int argc, const char **argv)
 	return 0;
 }
 
-static int ut_009bug_BUG(int argc, const char **argv)
+static int ut_009bug_BUG(int argc UNUSED, const char **argv UNUSED)
 {
 	bug("a bug message");
 	bug("another bug message");
@@ -224,7 +224,7 @@ static int ut_009bug_BUG(int argc, const char **argv)
 	return 0;
 }
 
-static int ut_010bug_BUG(int argc, const char **argv)
+static int ut_010bug_BUG(int argc UNUSED, const char **argv UNUSED)
 {
 	bug("a %s message", "bug");
 	BUG("a %s message", "BUG");

t/helper/test-xml-encode.c

@@ -6,7 +6,7 @@ static const char *utf8_replace_character = "�";
  * Encodes (possibly incorrect) UTF-8 on <stdin> to <stdout>, to be embedded
  * in an XML file.
  */
-int cmd__xml_encode(int argc, const char **argv)
+int cmd__xml_encode(int argc UNUSED, const char **argv UNUSED)
 {
 	unsigned char buf[1024], tmp[4], *tmp2 = NULL;
 	ssize_t cur = 0, len = 1, remaining = 0;