configurator: avoid potential unused parameter warnings hosing our config.h

Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tools/configurator/configurator.c

@@ -63,7 +63,7 @@ struct test {
 static struct test tests[] = {
 	{ "HAVE_32BIT_OFF_T", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
 	  "#include <sys/types.h>\n"
-	  "int main(int argc, char *argv[]) {\n"
+	  "int main(void) {\n"
 	  "	return sizeof(off_t) == 4 ? 0 : 1;\n"
 	  "}\n" },
 	{ "HAVE_ALIGNOF", INSIDE_MAIN, NULL, NULL,
@@ -90,7 +90,7 @@ static struct test tests[] = {
 	  "#include <stdlib.h>\n"
 	  "static void __attribute__((noreturn)) func(int x) { exit(x); }" },
 	{ "HAVE_ATTRIBUTE_PRINTF", DEFINES_FUNC, NULL, NULL,
-	  "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { }" },
+	  "static void __attribute__((format(__printf__, 1, 2))) func(const char *fmt, ...) { (void)fmt; }" },
 	{ "HAVE_ATTRIBUTE_UNUSED", OUTSIDE_MAIN, NULL, NULL,
 	  "static int __attribute__((unused)) func(int x) { return x; }" },
 	{ "HAVE_ATTRIBUTE_USED", OUTSIDE_MAIN, NULL, NULL,
@@ -191,7 +191,7 @@ static struct test tests[] = {
 	  "HAVE_32BIT_OFF_T", NULL,
 	  "#define _FILE_OFFSET_BITS 64\n"
 	  "#include <sys/types.h>\n"
-	  "int main(int argc, char *argv[]) {\n"
+	  "int main(void) {\n"
 	  "	return sizeof(off_t) == 8 ? 0 : 1;\n"
 	  "}\n" },
 	{ "HAVE_FOR_LOOP_DECLARATION", INSIDE_MAIN, NULL, NULL,
@@ -277,7 +277,8 @@ static struct test tests[] = {
 	  "	return nest(base, i-1);\n"
 	  "}\n"
 	  "int main(int argc, char *argv[]) {\n"
-	  "	return (nest(&argc, argc) > 0) ? 0 : 1\n;"
+	  "	(void)argv;\n"
+	  "	return (nest(&argc, argc) > 0) ? 0 : 1;\n"
 	  "}\n" },
 	{ "HAVE_STATEMENT_EXPR", INSIDE_MAIN, NULL, NULL,
 	  "return ({ int x = argc; x == argc ? 0 : 1; });" },
@@ -290,6 +291,7 @@ static struct test tests[] = {
 	{ "HAVE_UNALIGNED_ACCESS", DEFINES_EVERYTHING|EXECUTE, NULL, NULL,
 	  "#include <string.h>\n"
 	  "int main(int argc, char *argv[]) {\n"
+	  "	(void)argc;\n"
 	  "     char pad[sizeof(int *) * 1];\n"
 	  "	strncpy(pad, argv[0], sizeof(pad));\n"
 	  "	int *x = (int *)pad, *y = (int *)(pad + 1);\n"
@@ -403,7 +405,10 @@ static struct test *find_test(const char *name)
 }
 
 #define PRE_BOILERPLATE "/* Test program generated by configurator. */\n"
-#define MAIN_START_BOILERPLATE "int main(int argc, char *argv[]) {\n"
+#define MAIN_START_BOILERPLATE \
+	"int main(int argc, char *argv[]) {\n" \
+	"	(void)argc;\n" \
+	"	(void)argv;\n"
 #define USE_FUNC_BOILERPLATE "(void)func;\n"
 #define MAIN_BODY_BOILERPLATE "return 0;\n"
 #define MAIN_END_BOILERPLATE "}\n"