[PULL 3/5] tests/unit: fix a -Wformat-truncation warning

[Peter Maydell]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

../tests/test-qobject-input-visitor.c: In function ‘test_visitor_in_list’:
../tests/test-qobject-input-visitor.c:454:49: warning: ‘%d’ directive output 
may be truncated writing between 1 and 10 bytes into a region of size 6 
[-Wformat-truncation=]
  454 |         snprintf(string, sizeof(string), "string%d", i);
      |                                                 ^~
../tests/test-qobject-input-visitor.c:454:42: note: directive argument in the 
range [0, 2147483606]
  454 |         snprintf(string, sizeof(string), "string%d", i);
      |                                          ^~~~~~~~~~
../tests/test-qobject-input-visitor.c:454:9: note: ‘snprintf’ output between 8 
and 17 bytes into a destination of size 12
  454 |         snprintf(string, sizeof(string), "string%d", i);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Rather than trying to be clever, since this is called 3 times during
tests, let's simply use g_strdup_printf().

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20220810121513.1356081-1-marcandre.lureau@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed commit message typos]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 tests/unit/test-qobject-input-visitor.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tests/unit/test-qobject-input-visitor.c 
b/tests/unit/test-qobject-input-visitor.c
index 14329dabcfe..5f614afdbf1 100644
--- a/tests/unit/test-qobject-input-visitor.c
+++ b/tests/unit/test-qobject-input-visitor.c
@@ -447,9 +447,8 @@ static void test_visitor_in_list(TestInputVisitorData *data,
     g_assert(head != NULL);
 
     for (i = 0, item = head; item; item = item->next, i++) {
-        char string[12];
+        g_autofree char *string = g_strdup_printf("string%d", i);
 
-        snprintf(string, sizeof(string), "string%d", i);
         g_assert_cmpstr(item->value->string, ==, string);
         g_assert_cmpint(item->value->integer, ==, 42 + i);
     }
-- 
2.25.1